00001 <?php
00002 /************************************************ 
00003 ** Title.........: PHP4+ Debug Helper
00004 ** Author........: Thomas Sch��ler <code at atomar dot de> 
00005 ** Filename......: debuglib.php(s)
00006 ** Last changed..: 03.04.2004 12:09
00007 ** License.......: Free to use. Postcardware ;)
00008 **
00009 *************************************************
00010 ** 
00011 ** Functions in this library:
00012 ** 
00013 ** print_a( array array [,bool show object vars] [,int returnmode] )
00014 **
00015 **   prints arrays in a readable, understandable form.
00016 **   if mode is defined the function returns the output instead of
00017 **   printing it to the browser
00018 **
00019 **   print_a( $array, #, 1 ) shows also object properties
00020 **   print_a( $array, 1, # ) returns the table as a string instead of printing it to the output buffer
00021 **   print_a( $array, 2, # ) opens the table in a new window.
00022 **   !NEW! print_a($array, string, #) opens the output in individual windows indentied by the string.
00023 **   print_a( $array, 3, # ) opens a new browser window with a serialized version of your array (save as a textfile and can it for later use ;).
00024 **   
00025 ** show_vars( [bool verbose] [, bool show_object_vars ] [, int limit] )
00026 **
00027 **   use this function on the bottom of your script to see all
00028 **   superglobals and global variables in your script in a nice
00029 **   formated way
00030 **   
00031 **   show_vars() without parameter shows $_GET, $_POST, $_SESSION,
00032 **   $_FILES and all global variables you've defined in your script
00033 **
00034 **   show_vars(1) shows $_SERVER and $_ENV in addition
00035 **   show_vars(#,1) shows also object properties
00036 **   show_vars(#, #, 15) shows only the first 15 entries in a numerical keyed array (or an array with more than 50 entries)  ( standard is 5 )
00037 **   show_vars(#, #, 0) shows all entries
00038 **
00039 **
00040 **   
00041 ** ** print_result( result_handle ) **
00042 **   prints a mysql_result set returned by mysql_query() as a table
00043 **   this function is work in progress! use at your own risk
00044 **
00045 **
00046 ** Happy debugging and feel free to email me your comments.
00047 **
00048 **
00049 **
00050 ** History: (starting at 2003-02-24)
00051 **
00052 **   - added tooltips to the td's showing the type of keys and values (thanks Itomic)
00053 ** 2003-07-16
00054 **   - pre() function now trims trailing tabulators
00055 ** 2003-08-01
00056 **   - silly version removed.. who needs a version for such a thing ;)
00057 ** 2003-09-24
00058 **   - changed the parameters of print_a() a bit
00059 **     see above
00060 **   - addet the types NULL and bolean to print_a()
00061 **   - print_a() now replaces trailing spaces in string values with red underscores
00062 ** 2003-09-24 (later that day ;)
00063 **   - oops.. fixed the print_a() documentation.. parameter order was wrong
00064 **   - added mode 3 to the second parameter 
00065 ** 2003-09-25
00066 **   - added a limit parameter to the show_vars() and print_a() functions
00067 **     default for show_vars() is 5
00068 **     show_vars(#,#, n) changes that (0 means show all entries)
00069 **     print_a() allways shows all entries by default
00070 **     print_a(#,#,#, n) changes that
00071 **     
00072 **     this parameter is used to limit the output of arrays with a numerical index (like long lists of similiar elements)
00073 **     i added this option for performance reasons
00074 **     it has no effect on arrays where one ore more keys are not number-strings
00075 ** 2003-09-27
00076 **   - reworked the pre() and _remove_exessive_leading_tabs() functions
00077 **     they now work like they should :)
00078 **   - some cosmetic changes
00079 ** 2003-10-28
00080 **   - fixed multiline string display
00081 ** 2003-11-14
00082 **   - argh! uploaded the wrong version :/ ... fixed.. sorry
00083 ** 2003-11-16
00084 **   - fixed a warning triggered by _only_numeric_keys()
00085 **     thanx Peter Valdemar :)
00086 **   - fixed a warning when print_a was called directly on an object
00087 **     thanx Hilton :)
00088 ** 2003-12-01
00089 **   - added slashes in front of the print_a(#,3) output
00090 ** 2004-03-17
00091 **   - fixed a problem when print_a(#,2) was called on an array containing newlines
00092 ** 2004-03-26
00093 **   - added a variation of mode 2 for print_a().
00094 **     when a string is passed as the second parameter, a new window with the string as prefix gets opened for every differend string.. #TODO_COMMENT#
00095 ************************************************/
00096 
00097 
00098 # This file must be the first include on your page.
00099 
00100 /* used for tracking of generation-time */
00101 {
00102         $MICROTIME_START = microtime();
00103         @$GLOBALS_initial_count = count($GLOBALS);
00104 }
00105 
00106 /************************************************ 
00107 ** print_a class and helper function
00108 ** prints out an array in a more readable way
00109 ** than print_r()
00110 **
00111 ** based on the print_a() function from
00112 ** Stephan Pirson (Saibot)
00113 ************************************************/
00114 
00115 class Print_a_class {
00116         
00117         # this can be changed to TRUE if you want
00118         var $look_for_leading_tabs = FALSE;
00119 
00120         var $output;
00121         var $iterations;
00122         var $key_bg_color = '1E32C8';
00123         var $value_bg_color = 'DDDDEE';
00124         var $fontsize = '8pt';
00125         var $keyalign = 'center';
00126         var $fontfamily = 'Verdana';
00127         var $show_object_vars;
00128         var $limit;
00129         
00130         // function Print_a_class() {}
00131         
00132         # recursive function!
00133         
00134         /* this internal function looks if the given array has only numeric values as  */
00135         function _only_numeric_keys( $array ) {
00136                 $test = TRUE;
00137                 if (is_array($array)) {
00138 
00139                         foreach( array_keys( $array ) as $key ) {
00140                                 if( !is_numeric( $key ) )       $test = FALSE; /* #TODO# */
00141                         }
00142                         return $test;
00143                 } else {
00144 
00145                         return FALSE;
00146 
00147                 }
00148 
00149 
00150         }
00151         
00152         function _handle_whitespace( $string ) {
00153                 $string = str_replace(' ', '&nbsp;', $string);
00154                 $string = preg_replace(array('/&nbsp;$/', '/^&nbsp;/'), '<span style="color:red;">_</span>', $string); /* replace spaces at the start/end of the STRING with red underscores */
00155                 $string = preg_replace('/\t/', '&nbsp;&nbsp;<span style="border-bottom:#'.$this->value_bg_color.' solid 1px;">&nbsp;</span>', $string); /* replace tabulators with '_ _' */
00156                 return $string;
00157         }
00158         
00159         function print_a($array, $iteration = FALSE, $key_bg_color = FALSE) {
00160                 $key_bg_color or $key_bg_color = $this->key_bg_color;
00161                         
00162                 # lighten up the background color for the key td's =)
00163                 if( $iteration ) {
00164                         for($i=0; $i<6; $i+=2) {
00165                                 $c = substr( $key_bg_color, $i, 2 );
00166                                 $c = hexdec( $c );
00167                                 ( $c += 15 ) > 255 and $c = 255;
00168                                 isset($tmp_key_bg_color) or $tmp_key_bg_color = '';
00169                                 $tmp_key_bg_color .= sprintf( "%02X", $c );
00170                         }
00171                         $key_bg_color = $tmp_key_bg_color;
00172                 }
00173                 
00174                 # build a single table ... may be nested
00175                 $this->output .= '<table style="border:none;" cellspacing="1">';
00176                 $only_numeric_keys = ($this->_only_numeric_keys( $array ) || count( $array ) > 50);
00177                 $i = 0;
00178                 foreach( $array as $key => $value ) {
00179                         
00180                         if( $only_numeric_keys && $this->limit && $this->limit == $i++ ) break; /* if print_a() was called with a fourth parameter #TODO# */
00181                         
00182                         $value_style_box = 'color:black;';
00183                         $key_style = 'color:white;';
00184                         
00185                         $type = gettype( $value );
00186                         # print $type.'<br />';
00187                         
00188                         # change the color and format of the value and set the values title
00189                         $type_title = $type;
00190                         $value_style_content = '';
00191                         switch( $type ) {
00192                                 case 'array':
00193                                         if( empty( $value ) ) $type_title = 'empty array';
00194                                         break;
00195                                 
00196                                 case 'object':
00197                                         $key_style = 'color:#FF9B2F;';
00198                                         break;
00199                                 
00200                                 case 'integer':
00201                                         $value_style_box = 'color:green;';
00202                                         break;
00203                                 
00204                                 case 'double':
00205                                         $value_style_box = 'color:blue;';
00206                                         break;
00207                                 
00208                                 case 'boolean':
00209                                         if( $value == TRUE ) {
00210                                                 $value_style_box = 'color:#D90081;';
00211                                         } else {
00212                                                 $value_style_box = 'color:#84009F;';
00213                                         }
00214                                         break;
00215                                         
00216                                 case 'NULL':
00217                                         $value_style_box = 'color:darkorange;';
00218                                         break;
00219                                 
00220                                 case 'string':
00221                                         if( $value == '' ) {
00222                                                 
00223                                                 $value_style_box = 'color:darkorange;';
00224                                                 $value = "''";
00225                                                 $type_title = 'empty string';
00226                                                 
00227                                         } else {
00228                                                 
00229                                                 $value_style_box = 'color:black;';
00230                                                 $value = htmlspecialchars( $value );
00231                                                 if( $this->look_for_leading_tabs && _check_for_leading_tabs( $value ) ) {
00232                                                         $value = _remove_exessive_leading_tabs( $value );
00233                                                 }
00234                                                 $value = $this->_handle_whitespace( $value );
00235                                                 $value = nl2br($value);
00236                                                 
00237                                                 /* use different color for string background */
00238                                                 if(strstr($value, "\n")) $value_style_content = 'background:#ECEDFE;';
00239                                                 
00240                                         }
00241                                         break;
00242                         }
00243 
00244                         $this->output .= '<tr>';
00245                         $this->output .= '<td nowrap="nowrap" align="'.$this->keyalign.'" style="padding:0px 3px 0px 3px;background-color:#'.$key_bg_color.';'.$key_style.';font:bold '.$this->fontsize.' '.$this->fontfamily.';" title="'.gettype( $key ).'['.$type_title.']">';
00246                         $this->output .= $this->_handle_whitespace( $key );
00247                         $this->output .= '</td>';
00248                         $this->output .= '<td nowrap="nowrap" style="background-color:#'.$this->value_bg_color.';font: '.$this->fontsize.' '.$this->fontfamily.'; color:black;">';
00249 
00250                         
00251                         # value output
00252                         if($type == 'array' && preg_match('/#RAS/', $key) ) { /* only used for special recursive array constructs which i use sometimes */
00253                                 $this->output .= '<div style="'.$value_style_box.'">recursion!</div>';
00254                         } elseif($type == 'array') {
00255                                 if( ! empty( $value ) ) {
00256                                         $this->print_a( $value, TRUE, $key_bg_color );
00257                                 } else {
00258                                         $this->output .= '<span style="color:darkorange;">[]</span>';   
00259                                 }
00260                         } elseif($type == 'object') {
00261                                 if( $this->show_object_vars ) {
00262                                         $this->print_a( get_object_vars( $value ), TRUE, $key_bg_color );
00263                                 } else {
00264                                         $this->output .= '<div style="'.$value_style_box.'">OBJECT</div>';
00265                                 }
00266                         } elseif($type == 'boolean') {
00267                                 $this->output .= '<div style="'.$value_style_box.'" title="'.$type.'">'.($value ? 'TRUE' : 'FALSE').'</div>';
00268                         } elseif($type == 'NULL') {
00269                                 $this->output .= '<div style="'.$value_style_box.'" title="'.$type.'">NULL</div>';
00270                         } else {
00271                                 $this->output .= '<div style="'.$value_style_box.'" title="'.$type.'"><span style="'.$value_style_content.'">'.$value.'</span></div>';
00272                         }
00273                         
00274                         $this->output .= '</td>';
00275                         $this->output .= '</tr>';
00276                 }
00277                 
00278                 $entry_count = count( $array );
00279                 $skipped_count = $entry_count - $this->limit;
00280                 
00281                 if( $only_numeric_keys && $this->limit && count($array) > $this->limit) {
00282                         $this->output .= '<tr title="showing '.$this->limit.' of '.$entry_count.' entries in this array"><td style="text-align:right;color:darkgray;background-color:#'.$key_bg_color.';font:bold '.$this->fontsize.' '.$this->fontfamily.';">...</td><td style="background-color:#'.$this->value_bg_color.';font:'.$this->fontsize.' '.$this->fontfamily.';color:darkgray;">['.$skipped_count.' skipped]</td></tr>';
00283                 }
00284                 $this->output .= '</table>';
00285         }
00286 }
00287 
00288 # helper function.. calls print_a() inside the print_a_class
00289 function print_a( $array, $mode = 0, $show_object_vars = FALSE, $limit = FALSE ) {
00290         $output = '';
00291         
00292         if( is_array( $array ) or is_object( $array ) ) {
00293                 
00294                 if( empty( $array ) ) {
00295                         $output .= '<span style="color:red;font-size:small;">print_a( empty array )</span>';
00296                 }
00297                 
00298                 $pa = &new Print_a_class;
00299                 $show_object_vars and $pa->show_object_vars = TRUE;
00300                 if( $limit ) {
00301                         $pa->limit = $limit;
00302                         // $output .= '<span style="color:red;">showing only '.$limit.' entries for arrays with numeric keys</span>';
00303                 }
00304                 
00305                 if ( is_object($array) ) {
00306 
00307               $pa->print_a( get_object_vars($array) );
00308 
00309                 } else {
00310 
00311               $pa->print_a( $array );
00312                 }
00313                 
00314                 # $output = $pa->output; unset($pa);
00315                 $output .= $pa->output;
00316         } else {
00317                 $output .= '<span style="color:red;font-size:small;">print_a( '.gettype( $array ).' )</span>';
00318         }
00319         
00320         if($mode === 0 || $mode == NULL || $mode == FALSE) {
00321                 print $output;
00322                 return TRUE;
00323         }
00324 
00325         if($mode == 1) {
00326                 return $output;
00327         }
00328         
00329         if(is_string($mode) || $mode == 2 ) {
00330                 $debugwindow_origin = $_SERVER["HTTP_HOST"].$_SERVER["REQUEST_URI"];
00331                 print '
00332                         <script type="text/javascript" language="JavaScript">
00333                                 var debugwindow;        
00334                                 debugwindow = window.open("", "T_'.md5($_SERVER['HTTP_HOST']).(is_string($mode)  ? $mode : '').'", "menubar=no,scrollbars=yes,resizable=yes,width=640,height=480");
00335                                 debugwindow.document.open();
00336                                 debugwindow.document.write("'.str_replace(array("\r\n", "\n", "\r"), '\n', addslashes($output)).'");
00337                                 debugwindow.document.close();
00338                                 debugwindow.document.title = "'.(is_string($mode) ? "($mode)" : '').' Debugwindow for : http://'.$debugwindow_origin.'";
00339                                 debugwindow.focus();
00340                         </script>
00341                 ';
00342         }
00343 
00344         if($mode == 3) {
00345                 print '
00346                         <script type="text/javascript" language="JavaScript">
00347                                 var debugwindow;        
00348                                 debugwindow = window.open("", "S_'.md5($_SERVER['HTTP_HOST']).'", "menubar=yes,scrollbars=yes,resizable=yes,width=640,height=480");
00349                                 debugwindow.document.open();
00350                                 debugwindow.document.write("unserialize(\''.str_replace("'", "\\'", addslashes( str_replace(array("\r\n", "\n", "\r"), '\n', serialize($array) ) ) ).'\');");
00351                                 debugwindow.document.close();
00352                                 debugwindow.document.title = "Debugwindow for : http://'.$debugwindow_origin.'";
00353                                 debugwindow.focus();
00354                         </script>
00355                 ';
00356         }
00357         
00358 }
00359 
00360 
00361 // shows mysql-result as a table.. # not ready yet :(
00362 function print_result($RESULT) {
00363         
00364         if(!$RESULT) return;
00365         
00366         
00367         if(mysql_num_rows($RESULT) < 1) return;
00368         $fieldcount = mysql_num_fields($RESULT);
00369         
00370         for($i=0; $i<$fieldcount; $i++) {
00371                 $tables[mysql_field_table($RESULT, $i)]++;
00372         }
00373         
00374         print '
00375                 <style type="text/css">
00376                         .rs_tb_th {
00377                                 font-family: Verdana;
00378                                 font-size:9pt;
00379                                 font-weight:bold;
00380                                 color:white;
00381                         }
00382                         .rs_f_th {
00383                                 font-family:Verdana;
00384                                 font-size:7pt;
00385                                 font-weight:bold;
00386                                 color:white;
00387                         }
00388                         .rs_td {
00389                                 font-family:Verdana;
00390                                 font-size:7pt;
00391                         }
00392                 </style>
00393                 <script type="text/javascript" language="JavaScript">
00394                         var lastID;
00395                         function highlight(id) {
00396                                 if(lastID) {
00397                                         lastID.style.color = "#000000";
00398                                         lastID.style.textDecoration = "none";
00399                                 }
00400                                 tdToHighlight = document.getElementById(id);
00401                                 tdToHighlight.style.color ="#FF0000";
00402                                 tdToHighlight.style.textDecoration = "underline";
00403                                 lastID = tdToHighlight;
00404                         }
00405                 </script>
00406         ';
00407 
00408         print '<table bgcolor="#000000" cellspacing="1" cellpadding="1">';
00409         
00410         print '<tr>';
00411         foreach($tables as $tableName => $tableCount) {
00412                 $col == '0054A6' ? $col = '003471' : $col = '0054A6';
00413                 print '<th colspan="'.$tableCount.'" class="rs_tb_th" style="background-color:#'.$col.';">'.$tableName.'</th>';
00414         }
00415         print '</tr>';
00416         
00417         print '<tr>';
00418         for($i=0;$i < mysql_num_fields($RESULT);$i++) {
00419                 $FIELD = mysql_field_name($RESULT, $i);
00420                 $col == '0054A6' ? $col = '003471' : $col = '0054A6';
00421                 print '<td align="center" bgcolor="#'.$col.'" class="rs_f_th">'.$FIELD.'</td>';
00422         }
00423         print '</tr>';
00424 
00425         mysql_data_seek($RESULT, 0);
00426 
00427         while($DB_ROW = mysql_fetch_array($RESULT, MYSQL_NUM)) {
00428                 $pointer++;
00429                 if($toggle) {
00430                         $col1 = "E6E6E6";
00431                         $col2 = "DADADA";
00432                 } else {
00433                         $col1 = "E1F0FF";
00434                         $col2 = "DAE8F7";
00435                 }
00436                 $toggle = !$toggle;
00437                 print '<tr id="ROW'.$pointer.'" onMouseDown="highlight(\'ROW'.$pointer.'\');">';
00438                 foreach($DB_ROW as $value) {
00439                         $col == $col1 ? $col = $col2 : $col = $col1;
00440                         print '<td valign="top" bgcolor="#'.$col.'" class="rs_td" nowrap>'.nl2br($value).'</td>';
00441                 }
00442                 print '</tr>';
00443         }
00444         print '</table>';
00445         mysql_data_seek($RESULT, 0);
00446 }
00447 
00448 
00449 ######################
00450 # reset the millisec timer
00451 #
00452 function reset_script_runtime() {
00453         $GLOBALS['MICROTIME_START'] = microtime();
00454 }
00455 
00456 
00457 ######################
00458 # function returns the milliseconds passed
00459 #
00460 function script_runtime() {
00461         $MICROTIME_END          = microtime();
00462         $MICROTIME_START        = explode(' ', $GLOBALS['MICROTIME_START']);
00463         $MICROTIME_END          = explode(' ', $MICROTIME_END);
00464         $GENERATIONSEC          = $MICROTIME_END[1] - $MICROTIME_START[1];
00465         $GENERATIONMSEC = $MICROTIME_END[0] - $MICROTIME_START[0];
00466         $GENERATIONTIME = substr($GENERATIONSEC + $GENERATIONMSEC, 0, 8);
00467         
00468         return (float) $GENERATIONTIME;
00469 }
00470 
00471 
00472 ######################
00473 # function shows all superglobals and script defined global variables
00474 # show_vars() without the first parameter shows all superglobals except $_ENV and $_SERVER
00475 # show_vars(1) shows all
00476 # show_vars(#,1) shows object properties in addition
00477 #
00478 function show_vars($show_all_vars = FALSE, $show_object_vars = FALSE, $limit = 5) {
00479         if($limit === 0) $limit = FALSE;
00480         
00481         function _script_globals() {
00482                 global $GLOBALS_initial_count;
00483         
00484                 $varcount = 0;
00485         
00486                 foreach($GLOBALS as $GLOBALS_current_key => $GLOBALS_current_value) {
00487                         if(++$varcount > $GLOBALS_initial_count) {
00488                                 /* die wollen wir nicht! */
00489                                 if ($GLOBALS_current_key != 'HTTP_SESSION_VARS' && $GLOBALS_current_key != '_SESSION') {
00490                                         $script_GLOBALS[$GLOBALS_current_key] = $GLOBALS_current_value;
00491                                 }
00492                         }
00493                 }
00494                 
00495                 unset($script_GLOBALS['GLOBALS_initial_count']);
00496                 return $script_GLOBALS;
00497         }
00498         
00499         if(isset($GLOBALS['no_vars'])) return;
00500         
00501         $script_globals = _script_globals();
00502         print '
00503                 <style type="text/css" media="screen">
00504                         .vars-container {
00505                                 font-family: Verdana, Arial, Helvetica, Geneva, Swiss, SunSans-Regular, sans-serif;
00506                                 font-size: 8pt;
00507                                 padding:5px;
00508                         }
00509                         .varsname {
00510                                 font-weight:bold;
00511                         }
00512                         .showvars {
00513                                 background:white;
00514                                 border-style:dotted;
00515                                 border-width:1px;
00516                                 padding:2px;
00517                                 font-family: Verdana, Arial, Helvetica, Geneva, Swiss, SunSans-Regular, sans-serif;
00518                                 font-size:10pt;
00519                                 font-weight:bold;"
00520                         }
00521                 </style>
00522                 <style type="text/css" media="print">
00523                         .showvars {
00524                                 display:none;
00525                                 visibility:invisible;
00526                         }
00527                 </style>
00528         ';
00529 
00530         print '<br />
00531                 <div class="showvars">
00532                 DEBUG <span style="color:red;font-weight:normal;font-size:9px;">(runtime: '.script_runtime().' sec)</span>
00533         ';
00534 
00535         $vars_arr['script_globals'] = array('global script variables', '#7ACCC8');
00536         $vars_arr['_GET'] = array('$_GET', '#7DA7D9');
00537         $vars_arr['_POST'] = array('$_POST', '#F49AC1');
00538         $vars_arr['_FILES'] = array('$_FILES', '#82CA9C');
00539         $vars_arr['_SESSION'] = array('$_SESSION', '#FCDB26');
00540         $vars_arr['_COOKIE'] = array('$_COOKIE', '#A67C52');
00541 
00542         if($show_all_vars) {
00543                 $vars_arr['_SERVER'] =  array('SERVER', '#A186BE');
00544                 $vars_arr['_ENV'] =  array('ENV', '#7ACCC8');
00545         }
00546 
00547         foreach($vars_arr as $vars_name => $vars_data) {
00548                 if($vars_name != 'script_globals') global $$vars_name;
00549                 if($$vars_name) {
00550                         print '<div class="vars-container" style="background-color:'.$vars_data[1].';"><span class="varsname">'.$vars_data[0].'</span><br />';
00551                         print_a($$vars_name, NULL, $show_object_vars, $limit);
00552                         print '</div>';
00553                 }
00554         }
00555         print '</div>';
00556 }
00557 
00558 
00559 ######################
00560 # function prints/returns strings wrapped between <pre></pre>
00561 #
00562 function pre( $string, $return_mode = FALSE, $tabwidth = 3 ) {
00563         $tab = str_repeat('&nbsp;', $tabwidth);
00564         $string = preg_replace('/\t+/em', "str_repeat( ' ', strlen('\\0') * $tabwidth );", $string); /* replace all tabs with spaces */
00565         
00566         $out = '<pre>'.$string."</pre>\n";
00567         
00568         if($return_mode) {
00569                 return $out;
00570         } else {
00571                 print $out;
00572         }
00573 }
00574 
00575 function _check_for_leading_tabs( $string ) {
00576         return preg_match('/^\t/m', $string);
00577 }
00578 
00579 function _remove_exessive_leading_tabs( $string ) {
00580         /* remove whitespace lines at start of the string */
00581         $string = preg_replace('/^\s*\n/', '', $string);
00582         /* remove whitespace at end of the string */
00583         $string = preg_replace('/\s*$/', '', $string);
00584         
00585         # kleinste Anzahl von f�hrenden TABS z�hlen
00586         preg_match_all('/^\t+/', $string, $matches);
00587         $minTabCount = strlen(@min($matches[0]));
00588         
00589         # und entfernen
00590         $string = preg_replace('/^\t{'.$minTabCount.'}/m', '', $string);
00591                                 
00592         return $string;
00593 }
00594 
00595 ?>