3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '1'; $b = &$a; $b = "2$b"; $a = 9; echo $a.", ".$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)
8.3.60.0040.01116.63
8.3.50.0120.00316.18
8.3.40.0060.01218.71
8.3.30.0110.00318.46
8.3.20.0040.00420.21
8.3.10.0070.00023.53
8.3.00.0040.00422.37
8.2.180.0110.01116.63
8.2.170.0120.00622.96
8.2.160.0040.01119.47
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0050.00322.26
8.2.120.0050.00226.35
8.2.110.0040.00720.95
8.2.100.0090.00617.46
8.2.90.0040.00419.19
8.2.80.0080.00017.97
8.2.70.0040.00417.50
8.2.60.0000.00817.93
8.2.50.0040.00418.10
8.2.40.0030.00620.22
8.2.30.0040.00419.22
8.2.20.0000.00717.67
8.2.10.0040.00417.98
8.2.00.0050.00317.61
8.1.270.0050.00323.96
8.1.260.0070.00028.09
8.1.250.0040.00428.09
8.1.240.0060.00323.88
8.1.230.0080.00318.80
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0040.00418.96
8.1.160.0040.00422.13
8.1.150.0050.00218.90
8.1.140.0000.00719.65
8.1.130.0030.00317.69
8.1.120.0030.00417.41
8.1.110.0000.00817.46
8.1.100.0030.00717.48
8.1.90.0090.00017.45
8.1.80.0040.00317.50
8.1.70.0030.00317.40
8.1.60.0000.00717.54
8.1.50.0000.00817.46
8.1.40.0060.00317.46
8.1.30.0000.00817.62
8.1.20.0040.00417.47
8.1.10.0050.00217.41
8.1.00.0030.00517.45
8.0.300.0000.00818.77
8.0.290.0000.00716.75
8.0.280.0030.00318.44
8.0.270.0000.00717.14
8.0.260.0030.00317.37
8.0.250.0000.00716.92
8.0.240.0040.00416.82
8.0.230.0070.00016.92
8.0.220.0000.00816.75
8.0.210.0030.00316.92
8.0.200.0000.00716.94
8.0.190.0070.00016.93
8.0.180.0030.00616.90
8.0.170.0070.00016.84
8.0.160.0000.00716.76
8.0.150.0000.00816.82
8.0.140.0070.00016.84
8.0.130.0030.00313.34
8.0.120.0040.00416.83
8.0.110.0050.00316.87
8.0.100.0000.00716.67
8.0.90.0000.00816.92
8.0.80.0090.01516.86
8.0.70.0000.00716.90
8.0.60.0070.00016.76
8.0.50.0000.00816.99
8.0.30.0090.00917.01
8.0.20.0130.00817.40
8.0.10.0000.00716.93
8.0.00.0000.01816.58
7.4.330.0050.00016.71
7.4.320.0000.00816.48
7.4.300.0030.00316.54
7.4.290.0050.00216.43
7.4.280.0060.00316.43
7.4.270.0030.00316.43
7.4.260.0030.00616.43
7.4.250.0000.00716.55
7.4.240.0000.00816.34
7.4.230.0070.00016.53
7.4.220.0120.00816.50
7.4.210.0060.00916.44
7.4.200.0030.00316.58
7.4.160.0110.00516.30
7.4.150.0140.00717.40
7.4.140.0140.00717.86
7.4.130.0100.00816.32
7.4.120.0070.01016.34
7.4.110.0060.01216.37
7.4.100.0140.00416.38
7.4.90.0100.00716.45
7.4.80.0080.01619.39
7.4.70.0130.00716.54
7.4.60.0070.01116.46
7.4.50.0070.00516.48
7.4.40.0090.00916.41
7.4.30.0050.01116.46
7.4.00.0070.00414.85
7.3.330.0000.00613.00
7.3.320.0000.00612.96
7.3.310.0030.00316.27
7.3.300.0070.00016.16
7.3.290.0070.00016.16
7.3.280.0100.00716.25
7.3.270.0100.00717.40
7.3.260.0110.00616.22
7.3.250.0080.00916.30
7.3.240.0080.00916.28
7.3.230.0090.00916.39
7.3.210.0140.00316.55
7.3.200.0120.00316.23
7.3.190.0060.01616.54
7.3.180.0100.00616.42
7.3.170.0090.00916.33
7.3.160.0120.00916.42
7.3.10.0100.00316.41
7.3.00.0040.00416.41
7.2.330.0120.00616.53
7.2.320.0130.00316.61
7.2.310.0130.01016.70
7.2.300.0070.01716.59
7.2.290.0120.00416.45
7.2.130.0000.01016.67
7.2.120.0030.01016.75
7.2.110.0000.01316.69
7.2.100.0080.00816.99
7.2.90.0030.00916.73
7.2.80.0080.00316.91
7.2.70.0000.01516.68
7.2.60.0080.00916.69
7.2.50.0140.00316.88
7.2.40.0060.00916.98
7.2.30.0030.00716.82
7.2.20.0000.00916.43
7.2.10.0060.00616.73
7.2.00.0050.00717.86
7.1.250.0030.00615.61
7.1.200.0040.00415.64
7.1.100.0000.01118.15
7.1.70.0030.01016.77
7.1.60.0030.00717.23
7.1.50.0090.01316.64
7.1.00.0070.07322.28
7.0.200.0080.00314.73
7.0.110.0070.06019.95
7.0.100.0070.05719.95
7.0.90.0100.05719.92
7.0.80.0130.05019.98
7.0.70.0030.06019.99
7.0.60.0100.05319.91
7.0.50.0000.06320.39
7.0.40.0030.06020.41
7.0.30.0370.06020.34
7.0.20.0300.05320.31
7.0.10.0230.07020.13
7.0.00.0200.06020.39
5.6.260.0100.05320.59
5.6.250.0070.05720.64
5.6.240.0130.05320.69
5.6.230.0030.06320.61
5.6.220.0170.04720.83
5.6.210.0130.05020.38
5.6.200.0100.05721.10
5.6.190.0130.05321.00
5.6.180.0030.06721.07
5.6.170.0030.06321.05
5.6.160.0200.04321.08
5.6.150.0070.05721.11
5.6.140.0200.05020.92
5.6.130.0070.06021.04
5.6.120.0030.06321.21
5.6.110.0170.06721.07
5.6.100.0100.05321.06
5.6.90.0230.06021.05
5.6.80.0000.06320.64
5.6.70.0230.05320.49
5.6.60.0130.04720.55
5.6.50.0270.04720.35
5.6.40.0130.04720.44
5.6.30.0130.04720.57
5.6.20.0130.04720.39
5.6.10.0070.05720.21
5.6.00.0100.05320.41

preferences:
60.01 ms | 404 KiB | 6 Q