3v4l.org

run code in 500+ PHP versions simultaneously
<?php // define( // 'FOO_CONSTANT', // array( // 'link' => array( ':hover', ':focus', ':active' ), // ) // ); // var_dump( array_key_exists( 'link', FOO_CONSTANT ) ); // var_dump( isset( FOO_CONSTANT['link'] ) ); class Foo { const VALID_ELEMENT_PSEUDO_SELECTORS = array( 'link' => array( ':hover', ':focus', ':active' ), ); } // Works.in >= PHP 5.6. var_dump( array_key_exists( 'link', FOO::VALID_ELEMENT_PSEUDO_SELECTORS ) ); var_dump( ! empty( FOO::VALID_ELEMENT_PSEUDO_SELECTORS['link'] ) ); // Doesn't work on < PHP 7.0. var_dump( isset( FOO::VALID_ELEMENT_PSEUDO_SELECTORS['link'] ) );

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)
8.5.70.0120.00516.84
8.5.60.0090.00616.66
8.5.50.0050.00216.69
8.5.30.0120.00518.85
8.5.20.0080.00921.32
8.5.10.0070.01120.23
8.5.00.0130.01422.88
8.4.220.0050.00619.41
8.4.210.0060.00321.30
8.4.180.0130.00919.56
8.4.170.0160.00620.72
8.4.160.0100.01323.75
8.4.150.0060.00716.82
8.4.140.0140.00717.82
8.4.130.0120.00617.43
8.4.120.0090.00720.65
8.4.110.0140.00520.36
8.4.100.0070.01317.83
8.4.90.0140.00620.39
8.4.80.0150.00518.81
8.4.70.0120.00918.81
8.4.60.0180.00420.33
8.4.50.0110.00918.50
8.4.40.0100.00919.63
8.4.30.0080.01120.36
8.4.20.0190.00017.81
8.4.10.0060.00322.01
8.3.310.0070.00418.48
8.3.300.0100.01020.95
8.3.290.0030.00618.62
8.3.280.0070.00516.19
8.3.270.0120.00716.85
8.3.260.0150.00516.43
8.3.250.0040.00518.80
8.3.240.0150.00616.69
8.3.230.0080.00216.59
8.3.220.0070.00820.92
8.3.210.0080.00416.57
8.3.200.0020.00616.41
8.3.190.0040.00417.31
8.3.180.0100.00619.10
8.3.170.0120.00318.95
8.3.160.0100.01016.61
8.3.150.0130.00616.73
8.3.140.0090.00916.62
8.3.130.0030.00618.54
8.3.120.0090.00020.68
8.3.110.0030.00618.45
8.3.100.0110.00416.42
8.3.90.0040.01126.77
8.3.80.0060.00316.63
8.3.70.0060.00816.58
8.3.60.0090.00916.50
8.3.50.0100.00720.36
8.3.40.0090.00621.73
8.3.30.0070.00718.89
8.3.20.0040.00424.18
8.3.10.0030.00524.66
8.3.00.0080.00026.16
8.2.310.0070.01019.81
8.2.300.0160.00618.10
8.2.290.0100.00817.11
8.2.280.0120.01018.37
8.2.270.0000.01816.49
8.2.260.0050.00317.15
8.2.250.0150.00018.30
8.2.240.0050.00518.43
8.2.230.0040.00420.94
8.2.220.0060.00324.06
8.2.210.0040.00426.77
8.2.200.0080.00016.36
8.2.190.0110.00316.58
8.2.180.0080.00825.92
8.2.170.0110.00318.96
8.2.160.0030.01022.96
8.2.150.0040.00425.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00020.72
8.2.110.0070.00320.52
8.2.100.0030.00620.52
8.1.340.0090.01117.57
8.1.330.0110.00716.16
8.1.320.0090.00921.69
8.1.310.0000.01816.70
8.1.300.0060.00316.14
8.1.290.0030.00730.84
8.1.280.0160.00025.92
8.1.270.0090.00023.99
8.1.260.0080.00026.35
8.1.250.0020.00528.09
8.1.240.0030.00718.49
8.1.230.0060.00318.43
5.6.400.0040.00415.52

preferences:
50.59 ms | 874 KiB | 5 Q