Online PHP editor | output for meT5A

@ 2021-09-14T07:08:34Z

<?php

$string = 'wow ABC (R+R) : Weldone boy (My Love)';
//$variable = "ABC (R+R)";
$variable = "ABC \(R\+R\)";
echo $pattern = "/\b$variable(?!\S)/";
echo "\n";
echo preg_match($pattern, $string)? 'matched' : 'not matched';

echo "\n\n";


/*   DIRECT FUNCTION */
echo preg_match("/\bABC \(R\+R\)(?!\S)/", 'wow ABC (R+R) : Weldone boy (My Love)')? 
'matched' : 'not matched';

Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12: /\bABC \(R\+R\)(?!\S)/ matched matched
Output for 8.3.5: 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 /\bABC \(R\+R\)(?!\S)/ matched matched

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