<?php
$totalString = 'this is my string of any_string any_stringany_string';
$stringToCutOff = 'any_string';
var_dump(rtrim_string($totalString, $stringToCutOff));
// string(32) "this is my string of any_string "
function rtrim_string($string, $stringToCutOff) {
$stringToCutOffLength = strlen($stringToCutOff);
while (substr($string, -$stringToCutOffLength) == $stringToCutOff) {
$string = substr($string, 0, -$stringToCutOffLength);
}
return $string;
}
?>