3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $text = "This is a #hastag within some #awesometext."; function tagIt($body) { $string = $body; $htag = "#"; $arr = preg_split("/(?[^#])\b/", $string);print_r($arr); $arrc = count($arr); $i = 0; while($i < $arrc) { if(substr($arr[$i], 0, 1) === $htag) { $arr[$i] = "<a href = 'category.php?tag=$arr[$i]'>".$arr[$i]."</a>"; } $i++; } $string = implode(" ", $arr); echo "\n".$string."\n"; } tagIt($text);
Output for 7.2.0 - 7.3.0rc4
Warning: preg_split(): Compilation failed: unrecognized character after (? or (?- at offset 2 in /in/E9gLu on line 9 Warning: count(): Parameter must be an array or an object that implements Countable in /in/E9gLu on line 10 Warning: implode(): Invalid arguments passed in /in/E9gLu on line 20
Output for 5.2.6 - 7.1.20
Warning: preg_split(): Compilation failed: unrecognized character after (? or (?- at offset 2 in /in/E9gLu on line 9 Warning: implode(): Invalid arguments passed in /in/E9gLu on line 20
Output for 5.2.5
Warning: preg_split(): Compilation failed: unrecognized character after (? at offset 2 in /in/E9gLu on line 9 Warning: implode(): Invalid arguments passed in /in/E9gLu on line 20
Output for 4.3.11 - 4.4.8, 5.0.0 - 5.2.4
Warning: preg_split(): Compilation failed: unrecognized character after (? at offset 2 in /in/E9gLu on line 9 Warning: implode(): Bad arguments. in /in/E9gLu on line 20
Output for 4.4.9
Warning: preg_split(): Compilation failed: unrecognized character after (? or (?- at offset 2 in /in/E9gLu on line 9 Warning: implode(): Bad arguments. in /in/E9gLu on line 20
Output for 4.3.2 - 4.3.10
Warning: Compilation failed: unrecognized character after (? at offset 2 in /in/E9gLu on line 9 Warning: implode(): Bad arguments. in /in/E9gLu on line 20
Output for 4.3.0 - 4.3.1
Warning: Compilation failed: unrecognized character after (? at offset 2 in /in/E9gLu on line 9 Warning: implode() [http://www.php.net/function.implode]: Bad arguments. in /in/E9gLu on line 20