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1. wmrom
   Member
   Posted 3 years ago #
   

   I'm working on a function which will insert 'first item' and 'last item' into the class attributes of the first and last list-item elements returned by the wp_list_pages() function. This is what I wrote to do it:
   

   function onw_first_and_last($the_string) {
     $class_position = stripos($the_string,'page_item');
     $string1 = substr($the_string,0,$class_position);
     $string2 = substr($the_string,$class_position);
     $string1 .= 'first_item ';
     $the_string = $string1.$string2;
     $last_class_position = strripos($the_string,'page_item');
     $string3 = substr($the_string,0,$last_class_position);
     $string4 = substr($the_string,$last_class_position);
     $string3 .= 'last_item ';
     $the_string = $string3.$string4;
     return $the_string;
   }

   Then I add it to the 'wp_list_pages' filter hook. I have other plugins hooking onto 'wp_list_pages' and they work just fine. But whenever I activate this plugin, I get an internal server error on the front end of my website (the wp-admin directory, etc. all works fine). Does anybody have any idea what the problem is?

2. wmrom
   Member
   Posted 3 years ago #
   

   Never mind. I just added it into the plugin which was already working.
   I also changed the code to
   

   $position_first_class=stripos($string,'<li class="');
     $position_first_class += 11;
     $replacement_insert='<li class="first_item ';
     $string_1 = substr($string,0,$position_first_class);
     $string_1 = str_ireplace('<li class="',$replacement_insert,$string_1);
     $string_2 = substr($string,$position_first_class);
     $string = $string_1.$string_2;
     $position_last_class=strripos($string,'<li class="');
     $replacement_insert_2 = '<li class="last_item ';
     $string_3 = substr($string,0,$position_last_class);
     $string_4 = substr($string,$position_last_class);
     $string_4 = str_ireplace('<li class="',$replacement_insert_2,$string_4);
     $string = $string_3.$string_4;

   It works now. Weird...

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