3v4l.org

run code in 300+ PHP versions simultaneously
<?php function by_ref_old_way(&$ref) { $ref = 23; } $var = 42; by_ref_old_way($var); var_dump($var);

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)
8.3.60.0140.00716.63
8.3.50.0030.01419.93
8.3.40.0070.00718.49
8.3.30.0040.01118.46
8.3.20.0050.00318.95
8.3.10.0000.00721.60
8.3.00.0030.00620.95
8.2.180.0150.00616.63
8.2.170.0060.00922.96
8.2.160.0070.00720.52
8.2.150.0070.00025.66
8.2.140.0040.00424.66
8.2.130.0070.00021.07
8.2.120.0060.00326.35
8.2.110.0040.00420.43
8.2.100.0090.00317.59
8.2.90.0000.00817.75
8.2.80.0040.00418.78
8.2.70.0040.00417.38
8.2.60.0000.00817.50
8.2.50.0000.00918.04
8.2.40.0050.00318.05
8.2.30.0060.00319.06
8.2.20.0030.00518.04
8.2.10.0030.00517.94
8.2.00.0000.00817.48
8.1.280.0040.01725.92
8.1.270.0000.01022.13
8.1.260.0000.00828.09
8.1.250.0040.00428.09
8.1.240.0070.00423.91
8.1.230.0050.00622.47
8.1.220.0030.00617.74
8.1.210.0060.00318.77
8.1.200.0040.00717.22
8.1.190.0000.00817.10
8.1.180.0060.00318.10
8.1.170.0000.00917.62
8.1.160.0040.00418.73
8.1.150.0050.00320.17
8.1.140.0000.00719.50
8.1.130.0000.00719.36
8.1.120.0030.00517.39
8.1.110.0030.00517.27
8.1.100.0050.00317.37
8.1.90.0000.00817.38
8.1.80.0000.00717.34
8.1.70.0070.00017.38
8.1.60.0050.00217.46
8.1.50.0040.00417.56
8.1.40.0000.00817.43
8.1.30.0090.00017.53
8.1.20.0040.00417.64
8.1.10.0070.00017.45
8.1.00.0060.00317.45
8.0.300.0070.00018.77
8.0.290.0040.00416.58
8.0.280.0000.00718.35
8.0.270.0000.00717.21
8.0.260.0030.00317.06
8.0.250.0030.00316.75
8.0.240.0030.00316.89
8.0.230.0070.00016.86
8.0.220.0040.00416.80
8.0.210.0070.00016.71
8.0.200.0030.00316.79
8.0.190.0070.00016.75
8.0.180.0000.00716.84
8.0.170.0000.00716.77
8.0.160.0040.00416.77
8.0.150.0040.00416.76
8.0.140.0070.00016.69
8.0.130.0000.00513.23
8.0.120.0030.00516.81
8.0.110.0000.00816.84
8.0.100.0040.00416.69
8.0.90.0070.00016.86
8.0.80.0060.00916.79
8.0.70.0070.00016.67
8.0.60.0040.00416.72
8.0.50.0040.00416.80
8.0.30.0110.00817.06
8.0.20.0130.00917.40
8.0.10.0040.00416.87
8.0.00.0090.00916.89
7.4.330.0030.00315.55
7.4.320.0030.00316.39
7.4.300.0050.00316.48
7.4.290.0030.00316.49
7.4.280.0000.00916.63
7.4.270.0040.00416.52
7.4.260.0000.00716.43
7.4.250.0070.00016.47
7.4.240.0070.00016.64
7.4.230.0000.00716.49
7.4.220.0070.01116.53
7.4.210.0070.01016.62
7.4.200.0070.00016.37
7.4.160.0120.00716.48
7.4.150.0140.00817.40
7.4.140.0130.00917.86
7.4.130.0090.01016.38
7.4.120.0100.00816.52
7.4.110.0110.00516.39
7.4.100.0130.00316.38
7.4.90.0100.00716.46
7.4.80.0100.00719.39
7.4.70.0070.01016.49
7.4.60.0130.01016.41
7.4.50.0030.01316.28
7.4.40.0090.00616.30
7.4.30.0100.00616.34
7.4.00.0070.01114.59
7.3.330.0050.00013.19
7.3.320.0000.00713.14
7.3.310.0030.00316.27
7.3.300.0070.00016.19
7.3.290.0070.00816.22
7.3.280.0090.00916.20
7.3.270.0130.00417.40
7.3.260.0080.00816.31
7.3.250.0130.00416.28
7.3.240.0110.00916.27
7.3.230.0130.00816.39
7.3.210.0110.00416.29
7.3.200.0100.00616.16
7.3.190.0140.00816.09
7.3.180.0060.01216.29
7.3.170.0150.00316.20
7.3.160.0080.00916.56
7.2.330.0090.00616.32
7.2.320.0100.00716.40
7.2.310.0130.00316.57
7.2.300.0130.00916.68
7.2.290.0140.00716.40
7.2.60.0100.00616.55
7.2.50.0100.00316.67
7.2.00.0160.00018.94
7.1.200.0030.00915.36
7.1.70.0000.00917.02
7.1.60.0070.00716.95
7.1.00.0030.07722.36
7.0.200.0700.00714.75
7.0.130.0030.06322.14
7.0.120.0100.05022.06
7.0.110.0070.05722.04
7.0.100.0030.05722.04
7.0.90.0170.05722.06
7.0.80.0130.07322.10
7.0.70.0100.05722.08
7.0.60.0100.05322.07
7.0.50.0100.05722.09
7.0.40.0230.06022.10
7.0.30.0200.04722.15
7.0.20.0130.05322.04
7.0.10.0170.07022.20
7.0.00.0170.05022.01
5.6.280.0070.05721.06
5.6.270.0070.05721.07
5.6.260.0070.05320.90
5.6.250.0170.06320.84
5.6.240.0100.05721.11
5.6.230.0170.05721.02
5.6.220.0030.06021.00
5.6.210.0070.05720.88
5.6.200.0070.06021.10
5.6.190.0100.05320.83
5.6.180.0070.06020.85
5.6.170.0100.05721.09
5.6.160.0100.06020.93
5.6.150.0000.07721.04
5.6.140.0130.05720.87
5.6.130.0030.06020.97
5.6.120.0170.06721.04
5.6.110.0030.06321.04
5.6.100.0130.05720.99
5.6.90.0230.05320.88
5.6.80.0200.06320.40
5.6.70.0100.05320.46
5.6.60.0070.07320.23
5.6.50.0100.05020.24
5.6.40.0070.05720.22
5.6.30.0000.06720.20
5.6.20.0130.05020.19
5.6.10.0100.05320.16
5.6.00.0000.06020.36
5.5.380.0100.06017.51
5.5.370.0170.06317.56
5.5.360.0070.07017.71
5.5.350.0100.05017.63
5.5.340.0070.05317.93
5.5.330.0030.06318.25
5.5.320.0130.05318.22
5.5.310.0130.07317.93
5.5.300.0030.05718.13
5.5.290.0100.06018.10
5.5.280.0070.06718.12
5.5.270.0130.05318.13
5.5.260.0100.05717.80
5.5.250.0000.07717.67
5.5.240.0100.06017.48
5.5.230.0130.05017.47
5.5.220.0130.06317.48
5.5.210.0130.06717.50
5.5.200.0170.05317.52
5.5.190.0100.05017.20
5.5.180.0070.05317.28
5.5.160.0100.05017.50
5.5.150.0070.05317.60
5.5.140.0100.04717.18
5.5.130.0070.05317.48
5.5.120.0030.05317.28
5.5.110.0000.06017.48
5.5.100.0100.06717.39
5.5.90.0100.05017.38
5.5.80.0070.05717.38
5.5.70.0070.05717.19
5.5.60.0030.05017.17
5.5.50.0100.04717.25
5.5.40.0030.05317.41
5.5.30.0070.05317.16
5.5.20.0070.05317.37
5.5.10.0030.08017.07
5.5.00.0030.05717.16
5.4.450.0070.05319.52
5.4.440.0170.06019.57
5.4.430.0130.05319.31
5.4.420.0100.05719.56
5.4.410.0130.05719.21
5.4.400.0130.04319.18
5.4.390.0170.04319.22
5.4.380.0030.06019.11
5.4.370.0230.05319.01
5.4.360.0070.07319.16
5.4.350.0000.06319.25
5.4.340.0070.05019.14
5.4.320.0030.05719.00
5.4.310.0130.06019.23
5.4.300.0100.05319.00
5.4.290.0100.05319.13
5.4.280.0130.05719.01
5.4.270.0070.05319.00
5.4.260.0100.05019.27
5.4.250.0070.05319.23
5.4.240.0200.06019.17
5.4.230.0130.05018.98
5.4.220.0070.05319.15
5.4.210.0070.05019.15
5.4.200.0130.04318.94
5.4.190.0170.04319.16
5.4.180.0170.04319.23
5.4.170.0070.07319.11
5.4.160.0000.05719.07
5.4.150.0170.04319.20
5.4.140.0100.05016.23
5.4.130.0070.04716.20
5.4.120.0070.05016.28
5.4.110.0100.05316.31
5.4.100.0130.04716.59
5.4.90.0030.05016.59
5.4.80.0070.05016.45
5.4.70.0030.05716.54
5.4.60.0030.05716.38
5.4.50.0130.04016.38
5.4.40.0100.04716.61
5.4.30.0070.05016.39
5.4.20.0070.05016.37
5.4.10.0070.05316.37
5.4.00.0100.04716.02
5.3.290.0130.04714.74
5.3.280.0130.04714.63
5.3.270.0100.05014.67
5.3.260.0030.07714.62
5.3.250.0130.04314.61
5.3.240.0130.04314.64
5.3.230.0100.06314.60
5.3.220.0030.05314.64
5.3.210.0070.05314.57
5.3.200.0130.04714.73
5.3.190.0130.04714.56
5.3.180.0030.05714.58
5.3.170.0130.04714.64
5.3.160.0070.05014.73
5.3.150.0130.04314.58
5.3.140.0030.05714.57
5.3.130.0100.05014.61
5.3.120.0070.05014.54
5.3.110.0100.05014.55
5.3.100.0070.05014.00
5.3.90.0100.04713.98
5.3.80.0070.05013.96
5.3.70.0100.04714.04
5.3.60.0000.05714.00
5.3.50.0100.04713.92
5.3.40.0100.05314.00
5.3.30.0030.06714.07
5.3.20.0070.05013.71
5.3.10.0100.05713.68
5.3.00.0070.06313.59
5.2.170.0100.03711.13
5.2.160.0130.03311.15
5.2.150.0030.06011.14
5.2.140.0000.05011.30
5.2.130.0070.03711.11
5.2.120.0000.04011.17
5.2.110.0070.04011.09
5.2.100.0070.04310.95
5.2.90.0170.05711.05
5.2.80.0030.04310.95
5.2.70.0070.04011.25
5.2.60.0070.05011.02
5.2.50.0100.04311.09
5.2.40.0070.04311.16
5.2.30.0070.03710.96
5.2.20.0030.04010.97
5.2.10.0100.05010.85
5.2.00.0030.04310.87
5.1.60.0030.0339.99
5.1.50.0100.0309.98
5.1.40.0070.03710.08
5.1.30.0070.03310.39
5.1.20.0030.03710.36
5.1.10.0000.05310.17
5.1.00.0100.03010.05
5.0.50.0030.0338.64
5.0.40.0000.0338.50
5.0.30.0000.0478.18
5.0.20.0100.0308.21
5.0.10.0030.0278.14
5.0.00.0030.0438.23
4.4.90.0030.0207.63
4.4.80.0000.0237.63
4.4.70.0000.0237.63
4.4.60.0070.0177.63
4.4.50.0030.0237.63
4.4.40.0030.0337.63
4.4.30.0030.0277.63
4.4.20.0070.0177.63
4.4.10.0000.0337.63
4.4.00.0030.0377.63
4.3.110.0030.0207.63
4.3.100.0070.0277.63
4.3.90.0070.0237.63
4.3.80.0030.0337.63
4.3.70.0070.0177.63
4.3.60.0030.0307.63
4.3.50.0070.0277.63
4.3.40.0070.0437.63
4.3.30.0030.0207.63
4.3.20.0030.0307.63
4.3.10.0030.0307.63
4.3.00.0000.0237.63

preferences:
55.44 ms | 401 KiB | 5 Q