PHP strrpos Examples
Use strrpos() to do backwards matching for substrings in PHP.
Important: Use Correct Comparsion Operator!
Only ever compare with the identical operators === / !== and only ever compare with false!
Positive match
if (strrpos($str, $substr) !== false) {
echo("Does match!")
}
Negative match
if (strrpos($str, $substr) === false) {
echo("Does not match.")
}
Check out PHP strpos for more details.
Search From Offset
If you want to continue a search or want to skip something at the end use an offset as third parameter:
if (strrpos($str, $substr, 5) === false) {
By using the return value of strrpos() you can do repeated searches:
$pos1 = strrpos($str, $substr);
$pos2 = strrpos($str, $substr, $pos1 + strlen($pos1));