- substr: documentation ( source)
- implode: documentation ( source)
- preg_split: documentation ( source)
<?php
$text = "This is a #hastag within some #awesometext.";
function tagIt($body)
{
$string = $body;
$htag = "#";
$arr = preg_split("/\b/", $string);
$arrc = count($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);