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run code in 200+ php & hhvm versions
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<?php $stringRegex = "/([aA][0-9]+)/"; $schema = [ 'a26UserId', 'a17Passwd', 'cAccountChannel', 'a256PcInfo1' ]; $result = []; foreach ($schema as $currentType) { if (preg_match($stringRegex, $currentType, $matches)) { $result[] = $matches[1]; } else { $result[] = substr($currentType, 0, 1); } } print_r($result);
based on buVJU
Output for 5.4.0 - 7.2.0
Array ( [0] => a26 [1] => a17 [2] => c [3] => a256 )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/qin19 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/qin19 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/qin19 on line 4
Process exited with code 255.