3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $x = 2; function test() { global $a; global $x; $GLOBALS['a'] = &$x; $x = 5; echo $a . PHP_EOL; echo $x . PHP_EOL; } test(); echo PHP_EOL; echo $a . PHP_EOL; // $a is 1 here instead of 5 echo $x . PHP_EOL; $a = &$x; echo PHP_EOL; echo $a . PHP_EOL; echo $x . 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)
8.4.130.0140.00518.64
8.4.120.0050.00424.22
8.4.110.0110.00719.04
8.4.100.0140.00718.75
8.4.90.0150.00520.25
8.4.80.0110.00918.66
8.4.70.0090.01218.02
8.4.60.0140.00618.76
8.4.50.0130.00623.91
8.4.40.0180.00418.58
8.4.30.0110.00618.37
8.4.20.0070.01420.73
8.4.10.0160.00019.55
8.3.260.0050.00416.42
8.3.250.0100.00918.96
8.3.240.0100.00817.13
8.3.230.0120.00816.41
8.3.220.0130.00618.77
8.3.210.0110.00318.38
8.3.200.0070.00116.75
8.3.190.0070.00117.21
8.3.180.0110.00616.48
8.3.170.0060.01317.04
8.3.160.0070.01316.77
8.3.150.0130.00320.73
8.3.140.0030.00617.27
8.3.130.0040.00418.15
8.3.120.0030.00620.73
8.3.110.0070.00716.60
8.3.100.0070.00416.61
8.3.90.0030.00626.77
8.3.80.0040.00716.63
8.3.70.0100.01016.58
8.3.60.0110.00716.63
8.3.50.0150.00224.51
8.3.40.0090.01220.17
8.3.30.0040.01118.64
8.3.20.0040.00421.65
8.3.10.0050.00322.10
8.3.00.0040.00422.51
8.2.290.0060.00420.29
8.2.280.0100.00317.80
8.2.270.0110.00717.30
8.2.260.0040.01416.43
8.2.250.0070.00020.56
8.2.240.0080.00417.07
8.2.230.0080.00020.94
8.2.220.0000.01024.06
8.2.210.0040.00426.77
8.2.200.0070.00318.29
8.2.190.0090.01216.58
8.2.180.0140.00325.92
8.2.170.0130.00718.79
8.2.160.0120.00622.96
8.2.150.0070.00025.66
8.2.140.0070.00024.66
8.2.130.0000.00826.16
8.2.120.0000.00826.16
8.2.110.0030.00619.27
8.2.100.0120.00017.78
8.2.90.0080.00017.63
8.2.80.0040.00418.63
8.2.70.0060.00317.93
8.2.60.0090.00018.03
8.2.50.0050.00319.28
8.2.40.0040.00421.20
8.2.30.0000.00819.27
8.2.20.0040.00417.95
8.2.10.0000.00719.25
8.2.00.0060.00319.32
8.1.330.0150.00521.98
8.1.320.0110.00916.13
8.1.310.0110.00720.24
8.1.300.0060.00318.19
8.1.290.0060.00330.84
8.1.280.0100.00725.92
8.1.270.0070.00024.66
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0000.00919.54
8.1.230.0000.01120.67
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0100.00017.25
8.1.190.0050.00317.10
8.1.180.0050.00318.87
8.1.170.0080.00018.50
8.1.160.0030.00519.14
8.1.150.0040.00418.82
8.1.140.0080.00018.78
8.1.130.0000.00717.43
8.1.120.0040.00417.48
8.1.110.0050.00317.37
8.1.100.0000.00817.36
8.1.90.0000.00817.50
8.1.80.0030.00517.37
8.1.70.0000.00717.46
8.1.60.0040.00417.65
8.1.50.0100.00317.46
8.1.40.0050.00317.46
8.1.30.0000.00817.67
8.1.20.0030.00517.56
8.1.10.0030.00517.42
8.1.00.0000.00717.45
8.0.300.0040.00418.77
8.0.290.0000.00816.58
8.0.280.0070.00018.50
8.0.270.0050.00518.69
8.0.260.0000.00716.74
8.0.250.0030.00516.95
8.0.240.0000.00617.01
8.0.230.0000.00716.88
8.0.220.0030.00316.88
8.0.210.0050.00216.88
8.0.200.0030.00316.97
8.0.190.0040.00416.83
8.0.180.0040.00416.95
8.0.170.0000.00816.94
8.0.160.0000.00716.93
8.0.150.0050.00216.88
8.0.140.0000.00816.88
8.0.130.0050.00013.28
8.0.120.0040.00416.89
8.0.110.0040.00416.95
8.0.100.0000.00716.82
8.0.90.0000.00716.95
8.0.80.0100.00916.81
8.0.70.0040.00416.98
8.0.60.0030.00716.95
8.0.50.0070.00016.89
8.0.30.0170.00317.42
8.0.20.0140.00717.14
8.0.10.0050.00317.13
8.0.00.0070.01116.75
7.4.330.0000.00615.55
7.4.320.0000.00716.53
7.4.300.0000.00716.51
7.4.290.0050.00316.61
7.4.280.0040.00416.53
7.4.270.0030.00616.57
7.4.260.0070.00013.25
7.4.250.0000.00716.58
7.4.240.0020.00516.52
7.4.230.0070.00016.62
7.4.220.0030.00316.62
7.4.210.0050.01316.59
7.4.200.0070.00016.64
7.4.130.0080.01216.51
7.4.120.0200.00416.41
7.4.110.0090.00916.57
7.4.100.0120.00616.70
7.4.90.0060.01016.60
7.4.80.0100.01319.39
7.4.70.0110.00516.53
7.4.60.0090.00916.54
7.4.50.0090.00616.26
7.4.40.0070.01316.52
7.4.30.0000.01616.44
7.4.20.0110.01416.39
7.4.10.0030.01316.63
7.4.00.0090.00916.55
7.3.330.0030.00316.33
7.3.320.0030.00313.18
7.3.310.0030.00316.19
7.3.300.0050.00216.25
7.3.290.0030.01216.37
7.3.260.0110.01616.29
7.3.230.0070.01016.57
7.3.210.0030.01416.38
7.3.200.0130.00716.38
7.3.190.0060.01016.44
7.3.180.0060.00916.49
7.3.170.0030.01216.54
7.3.160.0080.01216.43
7.3.150.0130.00316.61
7.3.140.0110.00716.39
7.3.130.0090.01216.32
7.3.120.0090.01216.21
7.3.110.0070.01016.38
7.3.100.0080.00816.50
7.3.90.0060.01016.56
7.3.80.0030.01316.36
7.3.70.0030.01316.26
7.3.60.0090.00616.27
7.3.50.0040.01116.48
7.3.40.0120.00316.20
7.3.30.0120.00316.41
7.3.20.0090.00616.41
7.3.10.0120.00616.38
7.3.00.0030.01416.28
7.2.330.0080.01116.79
7.2.320.0030.01516.62
7.2.310.0070.01016.77
7.2.300.0120.00616.71
7.2.290.0110.00716.29
7.2.280.0080.00816.70
7.2.270.0080.00816.52
7.2.260.0150.01216.80
7.2.250.0060.01016.68
7.2.240.0050.01116.54
7.2.230.0040.01216.75
7.2.220.0030.01316.49
7.2.210.0130.00416.28
7.2.200.0130.00316.55
7.2.190.0030.01216.59
7.2.180.0100.00716.57
7.2.170.0100.00716.58
7.2.160.0040.01216.37
7.2.150.0060.01916.57
7.2.140.0110.00916.46
7.2.130.0070.01016.57
7.2.120.0030.01316.63
7.2.110.0070.01016.60
7.2.100.0070.01016.66
7.2.90.0080.01216.66
7.2.80.0060.01016.55
7.2.70.0090.00916.56
7.2.60.0120.00616.48
7.2.50.0060.01216.64
7.2.40.0070.01016.58
7.2.30.0140.00316.64
7.2.20.0110.00616.50
7.2.10.0070.01016.55
7.2.00.0040.01216.55

preferences:
151.67 ms | 403 KiB | 5 Q