<?php
$str = 'abcd,abed,abfd,abgd';
if(preg_match("/ab.d/",$str ,$matches) !== false){ // check any match found or not
echo "match found:".$matches[0]; // when found print that match
}//after printing execution will stops successfully.
?>
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
match found:abcd