3v4l.org

run code in 300+ PHP versions simultaneously
<?php function ref(&$a) {} function val($a) {} $b = []; $a = $b['a']['b']; $a =& $b['a']['b']; ref($b['a']['b']); val($b['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)
8.3.70.0120.00918.55
8.3.60.0150.00316.63
8.3.50.0120.00921.14
8.3.40.0070.00718.71
8.3.30.0040.01118.57
8.3.20.0040.00420.16
8.3.10.0050.00223.66
8.3.00.0100.00323.46
8.2.190.0060.01216.75
8.2.180.0140.00318.54
8.2.170.0070.00722.96
8.2.160.0070.00720.44
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0070.00019.83
8.2.120.0000.00726.35
8.2.110.0030.00621.03
8.2.100.0080.00418.04
8.2.90.0080.00019.06
8.2.80.0030.00617.97
8.2.70.0000.00917.63
8.2.60.0040.00417.93
8.2.50.0040.00418.07
8.2.40.0000.00922.31
8.2.30.0040.00419.45
8.2.20.0060.00317.63
8.2.10.0000.00718.11
8.2.00.0000.00718.06
8.1.280.0070.00725.92
8.1.270.0110.00723.83
8.1.260.0040.00428.09
8.1.250.0070.00028.09
8.1.240.0000.00922.46
8.1.230.0090.00319.01
8.1.220.0000.00817.79
8.1.210.0000.00818.77
8.1.200.0000.00917.25
8.1.190.0000.00817.23
8.1.180.0050.00318.10
8.1.170.0000.00918.54
8.1.160.0050.00320.62
8.1.150.0040.00418.83
8.1.140.0050.00319.57
8.1.130.0000.00817.64
8.1.120.0000.00817.27
8.1.110.0000.00717.44
8.1.100.0000.00717.41
8.1.90.0000.00717.45
8.1.80.0000.00817.34
8.1.70.0060.00617.38
8.1.60.0040.00417.59
8.1.50.0030.00517.53
8.1.40.0030.00517.42
8.1.30.0060.00317.59
8.1.20.0000.00717.59
8.1.10.0090.00017.49
8.1.00.0070.00017.40
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0030.00318.43
8.0.270.0000.00717.11
8.0.260.0030.00317.24
8.0.250.0060.00016.99
8.0.240.0040.00416.87
8.0.230.0070.00016.85
8.0.220.0050.00316.88
8.0.210.0080.00016.90
8.0.200.0030.00316.87
8.0.190.0050.00216.89
8.0.180.0080.00316.93
8.0.170.0080.00016.88
8.0.160.0040.00416.78
8.0.150.0030.00316.89
8.0.140.0000.00716.77
8.0.130.0030.00313.34
8.0.120.0000.00816.95
8.0.110.0000.00816.83
8.0.100.0040.00417.01
8.0.90.0000.00716.72
8.0.80.0040.01216.90
8.0.70.0000.00816.77
8.0.60.0000.00716.93
8.0.50.0070.00016.79
8.0.30.0070.01217.05
8.0.20.0150.00517.40
8.0.10.0040.00416.95
8.0.00.0110.01416.78
7.4.330.0000.00516.66
7.4.320.0000.00716.45
7.4.300.0000.00716.65
7.4.290.0000.00716.53
7.4.280.0030.00616.53
7.4.270.0030.00316.57
7.4.260.0000.00716.50
7.4.250.0040.00416.42
7.4.240.0040.00416.48
7.4.230.0030.00316.35
7.4.220.0090.01616.57
7.4.210.0110.00516.62
7.4.200.0070.00016.63
7.4.160.0140.00316.50
7.4.150.0120.00917.40
7.4.140.0080.01517.86
7.4.130.0130.00816.54
7.4.120.0090.01016.51
7.4.110.0070.01016.43
7.4.100.0060.01116.36
7.4.90.0060.01216.65
7.4.80.0110.00719.39
7.4.70.0100.01116.56
7.4.60.0130.00316.33
7.4.50.0020.01016.37
7.4.40.0080.01316.61
7.4.30.0100.01016.20
7.4.00.0070.00914.94
7.3.330.0000.00613.33
7.3.320.0060.00013.36
7.3.310.0030.00516.26
7.3.300.0000.00816.23
7.3.290.0030.00316.32
7.3.280.0030.01216.36
7.3.270.0110.00717.40
7.3.260.0090.00916.20
7.3.250.0100.00716.33
7.3.240.0060.01116.33
7.3.230.0060.01516.39
7.3.210.0100.00716.36
7.3.200.0160.00919.39
7.3.190.0090.01216.49
7.3.180.0040.01116.10
7.3.170.0030.01216.44
7.3.160.0160.00016.48
7.3.120.0070.01114.85
7.3.110.0100.00715.03
7.3.100.0000.01614.89
7.3.90.0030.00614.55
7.3.80.0060.00614.83
7.3.70.0000.00914.92
7.3.60.0040.00414.62
7.3.50.0030.01114.58
7.3.40.0030.00614.55
7.3.30.0000.01114.74
7.3.20.0110.00316.38
7.3.10.0030.01116.57
7.3.00.0110.00516.58
7.2.330.0060.01516.73
7.2.320.0070.01016.29
7.2.310.0080.01016.71
7.2.300.0090.00916.76
7.2.290.0120.00916.77
7.2.250.0100.01015.09
7.2.240.0070.01315.22
7.2.230.0030.01014.78
7.2.220.0070.00714.77
7.2.210.0090.00315.17
7.2.200.0060.00614.71
7.2.190.0090.00615.09
7.2.180.0170.00015.09
7.2.170.0060.00614.97
7.2.130.0060.01216.86
7.2.120.0090.00617.01
7.2.110.0090.00316.70
7.2.100.0040.00416.83
7.2.90.0030.01016.92
7.2.80.0070.00717.02
7.2.70.0000.00917.02
7.2.60.0030.01017.01
7.2.50.0060.00616.79
7.2.40.0070.00717.04
7.2.30.0100.00316.94
7.2.20.0110.00316.57
7.2.10.0040.00816.71
7.2.00.0070.00517.88
7.1.330.0030.01015.76
7.1.320.0100.00315.46
7.1.310.0070.01015.86
7.1.300.0030.00615.68
7.1.290.0060.00915.89
7.1.280.0070.00715.91
7.1.270.0040.00715.79
7.1.260.0000.01215.80
7.1.250.0100.00315.83
7.1.100.0120.00318.00
7.1.70.0040.00417.15
7.1.60.0070.01719.18
7.1.50.0040.00716.80
7.1.00.0070.07022.51
7.0.200.0170.00716.42
7.0.60.0000.08721.75
7.0.50.0100.07317.88
7.0.40.0030.04320.40
7.0.30.0270.05320.26
7.0.20.0430.07720.07
7.0.10.0030.06720.15
7.0.00.0030.05320.13
5.6.280.0000.05320.89
5.6.210.0100.08020.48
5.6.200.0030.07718.19
5.6.190.0070.04020.57
5.6.180.0470.04720.67
5.6.170.0370.07720.47
5.6.160.0200.06320.55
5.6.150.0100.08018.18
5.6.140.0070.05718.28
5.6.130.0130.07318.23
5.6.120.0070.08320.98
5.6.110.0070.06321.12
5.6.100.0170.06721.00
5.6.90.0030.08720.98
5.6.80.0130.07320.54
5.5.350.0270.08720.41
5.5.340.0100.04017.99
5.5.330.0030.04020.13
5.5.320.0230.07320.29
5.5.310.0270.05020.41
5.5.300.0070.08317.98
5.5.290.0100.08018.08
5.5.280.0100.04720.66
5.5.270.0100.08320.97
5.5.260.0070.04720.75
5.5.250.0100.03320.68
5.5.240.0100.06720.16

preferences:
63.13 ms | 401 KiB | 5 Q