Online PHP editor | refs for 4qssk

@ 2019-04-22T09:31:13Z

<?php

$strings = [
    "This is a word",
    "<-#word#->",
    "<-#<-#<-#word#->#->#->",
];

$p = "word";
foreach ($strings as $string) {
    $string = preg_replace("/(?<!<-#)($p)(?!#->)/i", '<-#$1#->', $string);
    echo $string . PHP_EOL;
}