3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a='xx'; $b=$a; $a='xxx'; echo $b;

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)
8.3.60.0150.00018.18
8.3.50.0090.00922.05
8.3.40.0090.00618.54
8.3.30.0070.00718.91
8.3.20.0040.00420.16
8.3.10.0040.00421.60
8.3.00.0070.00018.96
8.2.180.0150.00618.41
8.2.170.0030.01022.96
8.2.160.0130.00720.22
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00726.16
8.2.120.0110.00419.54
8.2.110.0090.00022.20
8.2.100.0080.00317.72
8.2.90.0040.00417.91
8.2.80.0040.00417.97
8.2.70.0040.00417.93
8.2.60.0000.00818.22
8.2.50.0040.00418.10
8.2.40.0050.00519.34
8.2.30.0030.00519.14
8.2.20.0040.00417.59
8.2.10.0050.00318.13
8.2.00.0040.00417.79
8.1.280.0120.00325.92
8.1.270.0080.00018.88
8.1.260.0090.00026.35
8.1.250.0070.00028.09
8.1.240.0090.00317.48
8.1.230.0110.00022.70
8.1.220.0030.00517.74
8.1.210.0080.00018.77
8.1.200.0060.00317.23
8.1.190.0030.00517.00
8.1.180.0040.00418.10
8.1.170.0060.00318.55
8.1.160.0000.00718.81
8.1.150.0000.00718.77
8.1.140.0040.00417.33
8.1.130.0030.00317.69
8.1.120.0040.00417.36
8.1.110.0030.00717.43
8.1.100.0000.00717.25
8.1.90.0030.00317.39
8.1.80.0000.00717.30
8.1.70.0030.00317.38
8.1.60.0030.00517.52
8.1.50.0030.00617.37
8.1.40.0080.00017.45
8.1.30.0030.00517.48
8.1.20.0000.00717.47
8.1.10.0040.00417.51
8.1.00.0040.00417.45
8.0.300.0050.00319.98
8.0.290.0050.00516.75
8.0.280.0030.00318.43
8.0.270.0030.00317.20
8.0.260.0000.00617.23
8.0.250.0040.00416.96
8.0.240.0080.00016.87
8.0.230.0030.00316.91
8.0.220.0030.00316.70
8.0.210.0050.00216.78
8.0.200.0000.00616.89
8.0.190.0040.00416.92
8.0.180.0080.00016.85
8.0.170.0030.00516.83
8.0.160.0000.00716.71
8.0.150.0070.00416.79
8.0.140.0050.00316.81
8.0.130.0050.00013.23
8.0.120.0000.00816.79
8.0.110.0070.00016.87
8.0.100.0070.00016.69
8.0.90.0000.00916.77
8.0.80.0100.00716.73
8.0.70.0040.00416.87
8.0.60.0070.00016.84
8.0.50.0040.00416.93
8.0.30.0080.00916.89
8.0.20.0110.00817.40
8.0.10.0050.00216.75
8.0.00.0070.01016.72
7.4.330.0000.00515.03
7.4.320.0030.00316.57
7.4.300.0060.00016.43
7.4.290.0070.00016.38
7.4.280.0030.00616.32
7.4.270.0060.00016.48
7.4.260.0080.00016.41
7.4.250.0040.00416.46
7.4.240.0060.00216.52
7.4.230.0060.00016.43
7.4.220.0060.01616.32
7.4.210.0160.00716.62
7.4.200.0000.00716.33
7.4.160.0040.01116.56
7.4.150.0120.00617.40
7.4.140.0130.00617.86
7.4.130.0120.00916.40
7.4.120.0120.00516.47
7.4.110.0030.01416.27
7.4.100.0160.00616.48
7.4.90.0100.00716.37
7.4.80.0110.01419.39
7.4.70.0070.01016.38
7.4.60.0130.00316.45
7.4.50.0060.00316.58
7.4.40.0130.00916.61
7.4.30.0060.00916.29
7.4.00.0100.00614.94
7.3.330.0000.00613.16
7.3.320.0060.00013.01
7.3.310.0070.00016.18
7.3.300.0060.00016.25
7.3.290.0080.00516.23
7.3.280.0080.01116.22
7.3.270.0070.01017.40
7.3.260.0100.00716.42
7.3.250.0080.01016.34
7.3.240.0000.01516.38
7.3.230.0060.01216.55
7.3.210.0070.01116.27
7.3.200.0110.01119.39
7.3.190.0030.01316.50
7.3.180.0080.00816.15
7.3.170.0120.00616.42
7.3.160.0070.00716.52
7.3.120.0140.00714.77
7.3.110.0030.01014.58
7.3.100.0030.00915.02
7.3.90.0000.01614.63
7.3.80.0000.01414.80
7.3.70.0090.00014.71
7.3.60.0040.00714.78
7.3.50.0030.01014.46
7.3.40.0120.00314.61
7.3.30.0080.00614.99
7.3.20.0040.00416.68
7.3.10.0040.00816.38
7.3.00.0070.00416.77
7.2.330.0120.00416.17
7.2.320.0060.01316.50
7.2.310.0030.01316.38
7.2.300.0080.01116.35
7.2.290.0120.00916.62
7.2.250.0070.01314.87
7.2.240.0180.00314.54
7.2.230.0000.01015.09
7.2.220.0030.01314.68
7.2.210.0190.00014.85
7.2.200.0070.00715.05
7.2.190.0060.00914.93
7.2.180.0060.00614.94
7.2.170.0130.00314.88
7.2.00.0040.01119.09
7.1.330.0070.00715.88
7.1.320.0060.00315.42
7.1.310.0060.01215.73
7.1.300.0090.00615.61
7.1.290.0110.00315.82
7.1.280.0040.00415.44
7.1.270.0110.00315.72
7.1.260.0030.00615.66
7.1.200.0070.00715.55
7.1.100.0000.01017.85
7.1.70.0000.00717.09
7.1.60.0170.00719.57
7.1.50.0070.01616.82
7.1.00.0030.07022.45
7.0.200.0070.00316.58
7.0.140.0070.06021.94
7.0.60.0130.07319.94
7.0.50.0030.05717.77
7.0.40.0100.07720.40
7.0.30.0270.05720.04
7.0.20.0370.07720.30
7.0.10.0130.07720.17
7.0.00.0100.05320.16
5.6.280.0100.06321.09
5.6.210.0030.07320.68
5.6.200.0070.08318.18
5.6.190.0000.06320.41
5.6.180.0270.07720.57
5.6.170.0230.08020.62
5.6.160.0030.06320.37
5.6.150.0030.07718.24
5.6.140.0100.08318.12
5.6.130.0030.04318.16
5.6.120.0070.05321.11
5.6.110.0100.07020.88
5.6.100.0000.05721.12
5.6.90.0100.06321.09
5.6.80.0130.07320.35
5.5.350.4030.04020.29
5.5.340.0070.08018.01
5.5.330.0030.06720.43
5.5.320.0200.04020.27
5.5.310.0270.05020.33
5.5.300.0030.06718.01
5.5.290.0130.07317.92
5.5.280.0000.04320.79
5.5.270.0100.08020.75
5.5.260.0130.07320.72
5.5.250.0100.08320.67
5.5.240.0130.08020.16
5.4.450.3630.03719.46
5.4.440.3030.04319.42
5.4.430.3770.04019.13
5.4.420.3830.04319.22
5.4.410.3630.04019.02
5.4.400.3170.03319.24
5.4.390.3070.04019.24
5.4.380.3030.03319.21
5.4.370.2830.03719.08
5.4.360.3130.04019.16
5.4.350.0400.03319.08
5.4.340.0430.05319.05
5.4.320.0430.04018.79
5.4.310.0400.07018.92
5.4.300.0430.04718.80
5.4.290.0370.04019.13
5.4.280.0430.06019.16
5.4.270.0470.05019.17
5.4.260.0400.04019.11
5.4.250.0330.06019.12
5.4.240.0470.06319.18
5.4.230.0430.05719.03
5.4.220.0430.04019.07
5.4.210.0430.03719.24
5.4.200.0470.07018.80
5.4.190.0370.03718.92
5.4.180.0370.04019.07
5.4.170.0470.05019.20
5.4.160.0430.03019.07
5.4.150.0330.04019.21
5.4.140.0430.06716.46
5.4.130.0430.06316.25
5.4.120.0470.04316.22
5.4.110.0570.03716.34
5.4.100.0300.05016.43
5.4.90.0300.04716.20
5.4.80.0530.05716.37
5.4.70.0470.04316.48
5.4.60.0500.04016.47
5.4.50.0530.05316.36
5.4.40.0470.06316.36
5.4.30.0370.04016.36
5.4.20.0470.07016.39
5.4.10.0430.05716.36
5.4.00.0400.07015.67
5.3.290.0600.06014.50
5.3.280.0430.07014.43
5.3.270.0370.05714.65
5.3.260.0400.03714.69
5.3.250.0370.04014.55
5.3.240.0400.06014.48
5.3.230.0370.04014.57
5.3.220.0470.04314.40
5.3.210.0570.05314.54
5.3.200.0500.06014.41
5.3.190.0370.03714.54
5.3.180.0470.04314.50
5.3.170.0400.04014.42
5.3.160.0400.06014.65
5.3.150.0530.05314.50
5.3.140.0370.04714.53
5.3.130.0430.03014.49
5.3.120.0500.06014.38
5.3.110.0570.04314.49
5.3.100.0370.04314.00
5.3.90.0400.03013.86
5.3.80.0630.03013.97
5.3.70.0330.03713.85
5.3.60.0400.05713.95
5.3.50.0330.03713.92
5.3.40.0330.05013.73
5.3.30.0270.06013.85
5.3.20.0270.03713.64
5.3.10.0300.03313.53
5.3.00.0400.03713.68
5.2.170.0230.03011.16
5.2.160.0230.03011.00
5.2.150.0270.05011.05
5.2.140.0430.02011.07
5.2.130.0230.03711.04
5.2.120.0200.03311.11
5.2.110.0230.03311.16
5.2.100.0270.03311.04
5.2.90.0330.04311.11
5.2.80.0270.02711.00
5.2.70.0370.05311.13
5.2.60.0330.03010.88
5.2.50.0370.05310.86
5.2.40.0270.02711.14
5.2.30.0300.03710.82
5.2.20.0330.05010.79
5.2.10.0330.05010.80
5.2.00.0230.04010.66
5.1.60.0200.0239.96
5.1.50.0270.0409.86
5.1.40.0270.0509.83
5.1.30.0270.05310.38
5.1.20.0230.02310.29
5.1.10.0370.0409.95
5.1.00.0230.03710.00
5.0.50.0070.0278.70
5.0.40.0170.0408.38
5.0.30.0100.0538.11
5.0.20.0130.0278.08
5.0.10.0130.0238.05
5.0.00.0170.0508.04
4.4.90.0070.0207.32
4.4.80.0100.0177.32
4.4.70.0130.0277.32
4.4.60.0130.0237.32
4.4.50.0130.0277.32
4.4.40.0100.0237.32
4.4.30.0170.0207.32
4.4.20.0130.0277.32
4.4.10.0170.0137.32
4.4.00.0170.0237.32
4.3.110.0100.0277.32
4.3.100.0170.0337.32
4.3.90.0200.0307.32
4.3.80.0200.0407.32
4.3.70.0200.0277.32
4.3.60.0130.0337.32
4.3.50.0270.0237.32
4.3.40.0170.0507.32
4.3.30.0130.0177.32
4.3.20.0100.0307.32
4.3.10.0100.0277.32
4.3.00.0100.0307.32

preferences:
55.92 ms | 401 KiB | 5 Q