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<?php $x = "50+60"; $regex = '#(?<val1>.*)(?<operator>[\+\-\/\*])(?<val2>.*)#'; preg_match( $regex, $x, $match); if (count($match)) { echo $match['val1'] . $match['operator'] . $match['val2'] .' = '; switch ($match['operator']) { case '+': $result = $match['val1'] + $match['val2']; break; case '-': $result = $match['val1'] - $match['val2']; break; case '/': $result = $match['val1'] / $match['val2']; break; case '*': $result = $match['val1'] * $match['val2']; break; } echo $result; }
Output for 4.4.6 - 4.4.9, 5.2.2 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
50+60 = 110
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 50+60 = 110
Output for 4.3.11, 4.4.0 - 4.4.5, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.1
Warning: preg_match(): Compilation failed: unrecognized character after (?< at offset 3 in /in/LS2pB on line 6
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: unrecognized character after (?< at offset 3 in /in/LS2pB on line 6
preferences:
300.55 ms | 401 KiB | 466 Q