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run code in 150+ php & hhvm versions
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<?php echo $p = implode('', range('a', 'z')); echo PHP_EOL; echo $c = substr($p, 13); echo PHP_EOL; $times = 1000 * 10 * 10; $test = function() use($p, $c) { return substr($p, 0, strlen($c)) == $c; }; $test1 = function() use ($p, $c) { return strncmp($p, $c, strlen($c)); }; $print = function($closure, $s) use ($times) { for ($i =0; $i < $times; $i++) $closure(); echo printf('Runns: %01.2f', microtime(1) - $s); echo PHP_EOL; }; $print($test, microtime(1)); $print($test1, microtime(1));
Output for 5.5.35, 5.6.21 - 5.6.22, 7.1.0
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0311 Runns: 0.0311
Output for 7.0.14
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0211 Runns: 0.0311
Output for 7.0.0, 7.0.4, 7.0.6 - 7.0.7, 7.0.9 - 7.0.10
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0111 Runns: 0.0111
Output for 7.0.1 - 7.0.3, 7.0.5, 7.0.8
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0211 Runns: 0.0211
Output for 5.3.7, 5.3.13, 5.4.12, 5.5.5, 5.6.28
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0611 Runns: 0.0511
Output for 5.4.7, 5.4.15, 5.5.27, 5.5.36 - 5.6.1, 5.6.4, 5.6.24 - 5.6.25
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0411 Runns: 0.0311
Output for 5.4.1, 5.4.20, 5.4.23, 5.4.25, 5.4.28, 5.4.32 - 5.4.34, 5.4.36, 5.4.39, 5.4.41, 5.4.43, 5.5.0 - 5.5.1, 5.5.10, 5.5.14 - 5.5.15, 5.5.19 - 5.5.20, 5.5.22, 5.5.33, 5.6.23
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0411 Runns: 0.0411
Output for 5.3.2, 5.3.4, 5.3.6, 5.3.8, 5.3.11, 5.3.17, 5.3.19 - 5.3.20, 5.3.22 - 5.3.23, 5.3.26 - 5.3.28, 5.4.0, 5.4.3 - 5.4.6, 5.4.11, 5.4.13 - 5.4.14, 5.4.17, 5.4.19, 5.4.21 - 5.4.22, 5.4.24, 5.4.27, 5.4.29, 5.4.38, 5.4.42, 5.4.44, 5.5.2 - 5.5.3, 5.5.7 - 5.5.9, 5.5.12, 5.5.16 - 5.5.18, 5.5.21, 5.5.23 - 5.5.26, 5.5.28 - 5.5.32, 5.5.34, 5.6.3, 5.6.5, 5.6.7 - 5.6.9, 5.6.11 - 5.6.13, 5.6.15 - 5.6.17, 5.6.20
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0511 Runns: 0.0411
Output for 5.3.0 - 5.3.1, 5.3.3, 5.3.5, 5.3.9, 5.3.12, 5.3.14 - 5.3.16, 5.3.29, 5.4.2, 5.4.8 - 5.4.10, 5.4.16, 5.4.18, 5.4.26, 5.4.30 - 5.4.31, 5.4.35, 5.4.37, 5.4.40, 5.4.45, 5.5.4, 5.5.6, 5.5.11, 5.5.13, 5.6.2, 5.6.10, 5.6.14, 5.6.19
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0611 Runns: 0.0411
Output for 5.3.21, 5.3.25, 5.6.18
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0511 Runns: 0.0511
Output for 5.6.6
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0511 Runns: 0.0311
Output for 5.3.10, 5.3.18, 5.3.24
abcdefghijklmnopqrstuvwxyz nopqrstuvwxyz Runns: 0.0711 Runns: 0.0511
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/OirOZ on line 10
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 T_FUNCTION in /in/OirOZ on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/OirOZ on line 10
Process exited with code 255.