3v4l.org

run code in 300+ PHP versions simultaneously
<?php function validateStringByPrefix1(string $string, $prefix) { $valid = false; if (is_string($prefix)) { if (! empty($prefix) && strpos($string, $prefix) === 0) { $valid = true; } } elseif (is_array($prefix)) { foreach ($prefix as $partPrefix) { if (! empty($partPrefix) && strpos($string, $partPrefix) === 0) { $valid = true; break; } } } return $valid; } function validateStringByPrefix2(string $string, $prefix) { $valid = false; if (is_string($prefix)) { if (strpos($string, $prefix) === 0) { $valid = true; } } elseif (is_array($prefix)) { foreach ($prefix as $partPrefix) { if (! empty($partPrefix) && strpos($string, $partPrefix) === 0) { $valid = true; break; } } } return $valid; } $t = microtime(true); var_dump(validateStringByPrefix2("foo", "bar")); printf("2 %.6fs\n", microtime(true) - $t); $t = microtime(true); var_dump(validateStringByPrefix1("foo", "bar")); printf("1 %.6fs\n", microtime(true) - $t);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
7.4.00.0030.01214.96
7.3.120.0140.00414.91
7.3.110.0070.01015.00
7.3.100.0070.00714.84
7.3.90.0040.01114.96
7.3.80.0030.00914.83
7.3.70.0090.00614.87
7.3.60.0070.00714.86
7.3.50.0030.01315.09
7.3.40.0100.00715.09
7.3.30.0070.01014.93
7.3.20.0030.01116.67
7.3.10.0040.00816.52
7.3.00.0030.00916.79
7.2.250.0060.01014.80
7.2.240.0090.00914.61
7.2.230.0100.00615.16
7.2.220.0080.00814.75
7.2.210.0030.01215.11
7.2.200.0110.00315.00
7.2.190.0030.01415.13
7.2.180.0090.00615.18
7.2.170.0000.01815.21
7.2.00.0030.00919.45
7.1.330.0000.01415.80
7.1.320.0100.00715.77
7.1.310.0110.00315.95
7.1.300.0090.00615.78
7.1.290.0050.00515.52
7.1.280.0000.01315.55
7.1.270.0060.00815.97
7.1.260.0030.01015.76
7.1.70.0000.00717.11
7.1.60.0080.00416.90
7.1.50.0240.01016.72
7.1.00.0000.08022.29
7.0.200.0390.00914.96
7.0.110.8670.07019.96
7.0.100.3330.05720.06
7.0.90.0470.05719.96
7.0.80.6630.06019.95
7.0.70.0400.07319.99
7.0.60.0400.05719.68
7.0.50.1100.07720.50
7.0.40.0370.06320.46
7.0.30.7830.07320.34
7.0.20.0400.07020.26
7.0.10.0200.07720.45
7.0.00.0430.06020.43
5.6.250.0170.07020.68
5.6.240.0200.05720.71
5.6.230.0170.05020.67
5.6.220.0130.06020.55
5.6.210.0070.06320.71
5.6.200.0200.06020.96
5.6.190.0030.06321.27
5.6.180.0230.06021.15
5.6.170.0200.05320.87
5.6.160.0070.06721.14
5.6.150.0200.05320.99
5.6.140.0130.05321.14
5.6.130.0130.06021.05
5.6.120.0070.06721.23
5.6.110.0070.07021.09
5.6.100.0170.05321.07
5.6.90.0270.04721.06
5.6.80.0070.06020.61
5.6.70.0130.05020.65
5.6.60.0070.06320.51
5.6.50.0070.06320.34
5.6.40.0070.06020.47
5.6.30.0070.06320.31
5.6.20.0100.05720.41
5.6.10.0100.05720.55
5.6.00.0130.05020.45

preferences:
52.55 ms | 403 KiB | 5 Q