3v4l.org

run code in 300+ PHP versions simultaneously
<?php if ( ! function_exists( 'str_starts_with' ) ) { function str_starts_with( $haystack, $needle ) { if ( '' === $needle ) { return true; } return 0 === strpos( $haystack, $needle ); } } $string = 'abcdefghijklmnopqrstuvwxyz'; $start = hrtime(true); for ( $i = 0; $i < 1000000; $i++ ) { $result1 = str_starts_with( $string, 'abc' ); $result2 = str_starts_with( $string, 'abd' ); } $end = hrtime(true); $str_starts_with_time = $end - $start; $start = hrtime(true); for ( $i = 0; $i < 1000000; $i++ ) { $result1 = 0 === strpos( $string, 'abc' ); $result2 = 0 === strpos( $string, 'abd' ); } $end = hrtime(true); $strpos_time = $end - $start; echo 'str_starts_with: ' . $str_starts_with_time . PHP_EOL; echo 'strpos: ' . $strpos_time . PHP_EOL; // echo which function is faster if ( $str_starts_with_time < $strpos_time ) { echo 'str_starts_with is faster' . PHP_EOL; } else { echo 'strpos is faster' . PHP_EOL; }

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)
8.3.110.0100.10916.50
8.3.100.0100.07524.06
8.3.90.0070.07726.77
8.3.80.0000.09117.97
8.3.70.0130.14018.31
8.3.60.0070.15418.55
8.3.50.0070.16118.60
8.3.40.0100.13620.21
8.3.30.0100.14618.54
8.3.20.0070.07624.18
8.3.10.0030.08324.66
8.3.00.0030.08426.16
8.2.230.0030.08420.94
8.2.220.0070.08637.54
8.2.210.0030.07826.77
8.2.200.0030.11416.38
8.2.190.0100.14916.58
8.2.180.0100.14716.50
8.2.170.0130.15518.96
8.2.160.0130.14522.96
8.2.150.0070.08025.66
8.2.140.0000.08924.66
8.2.130.0100.08126.16
8.2.120.0030.08319.66
8.2.110.0100.14521.61
8.2.100.0100.12219.12
8.2.90.0000.11320.02
8.2.80.0030.12719.00
8.2.70.0100.12019.02
8.2.60.0100.10319.12
8.2.50.0100.12218.99
8.2.40.0090.11418.17
8.2.30.0130.11917.98
8.2.20.0100.12017.98
8.2.10.0110.12018.03
8.2.00.0150.11718.02
8.1.290.0100.09318.88
8.1.280.0170.12618.45
8.1.270.0150.09619.50
8.1.260.0070.07726.35
8.1.250.0070.07628.09
8.1.240.0050.13920.63
8.1.230.0050.11519.83
8.1.220.0050.11618.21
8.1.210.0070.12819.43
8.1.200.0120.13617.85
8.1.190.0030.11817.89
8.1.180.0080.12418.18
8.1.170.0100.11717.91
8.1.160.0110.12518.02
8.1.150.0140.12117.93
8.1.140.0090.11517.95
8.1.130.0090.12517.93
8.1.120.0130.11017.94
8.1.110.0060.11717.97
8.1.100.0100.12217.95
8.1.90.0140.12117.92
8.1.80.0120.12118.52
8.1.70.0120.12618.05
8.1.60.0050.12718.01
8.1.50.0100.12417.99
8.1.40.0160.12818.06
8.1.30.0070.12917.97
8.1.20.0120.11317.97
8.1.10.0080.13217.95
8.1.00.0100.12217.99
8.0.300.0100.11219.01
8.0.290.0030.12017.26
8.0.280.0120.12117.67
8.0.270.0120.12118.33
8.0.260.0100.12518.29
8.0.250.0100.12117.71
8.0.240.0060.12317.75
8.0.230.0110.11817.74
8.0.220.0100.11517.70
8.0.210.0090.12217.67
8.0.200.0120.11717.68
8.0.190.0060.12617.70
8.0.180.0120.11717.70
8.0.170.0090.12018.02
8.0.160.0100.11617.96
8.0.150.0070.10917.95
8.0.140.0120.11217.98
8.0.130.0040.11817.68
8.0.120.0120.12317.67
8.0.110.0070.11917.75
8.0.100.0080.12617.65
8.0.90.0040.12417.66
8.0.80.0060.12417.67
8.0.70.0070.12317.62
8.0.60.0070.11118.54
8.0.50.0080.12117.95
8.0.30.0100.11518.04
8.0.20.0080.12017.75
8.0.10.0080.11817.69
7.4.290.0250.15226.77

preferences:
51.06 ms | 403 KiB | 5 Q