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run code in 150+ 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 4.3.0 - 7.1.0
Array ( [0] => [1] => T [2] => h [3] => is [4] => is a [5] => [6] => # [7] => h [8] => a [9] => s [10] => t [11] => ag [12] => w [13] => i [14] => t [15] => h [16] => in [17] => s [18] => o [19] => me [20] => [21] => # [22] => a [23] => w [24] => e [25] => s [26] => o [27] => m [28] => e [29] => t [30] => e [31] => xt [32] => . [33] => ) T h is is a <a href = 'category.php?tag=#'>#</a> h a s t ag w i t h in s o me <a href = 'category.php?tag=#'>#</a> a w e s o m e t e xt .