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)
7.0.130.0000.06322.05
7.0.120.0030.06322.03
7.0.110.0070.07322.16
7.0.100.0070.05722.07
7.0.90.0000.06322.27
7.0.80.0130.05022.07
7.0.70.0200.05722.11
7.0.60.0100.05322.07
7.0.50.0070.05722.05
7.0.40.0000.06322.13
7.0.30.0030.05722.11
7.0.20.0030.07721.98
7.0.10.0100.05321.97
7.0.00.0130.05022.11
5.6.280.0130.05020.90
5.6.270.0130.05320.85
5.6.260.0100.06721.06
5.6.250.0100.05720.99
5.6.240.0070.06020.76
5.6.230.0030.06020.93
5.6.220.0130.05020.92
5.6.210.0100.05720.96
5.6.200.0130.06320.81
5.6.190.0170.05321.00
5.6.180.0130.05321.00
5.6.170.0100.05320.91
5.6.160.0030.06721.08
5.6.150.0070.06020.84
5.6.140.0100.07020.87
5.6.130.0170.05320.83
5.6.120.0070.06320.80
5.6.110.0270.05720.92
5.6.100.0170.08320.93
5.6.90.0100.08721.02
5.6.80.0200.07320.43
5.6.70.0230.06720.21
5.6.60.0130.08320.32
5.6.50.0100.05020.41
5.6.40.0070.06320.31
5.6.30.0200.06020.20
5.6.20.0100.05320.39
5.6.10.0230.05720.42
5.6.00.0200.05720.40
5.5.380.0170.04317.63
5.5.370.0070.05717.64
5.5.360.0200.04717.53
5.5.350.0130.04717.67
5.5.340.0070.05317.85
5.5.330.0070.07317.93
5.5.320.0100.05017.90
5.5.310.0130.05018.01
5.5.300.0230.07018.22
5.5.290.0070.06718.05
5.5.280.0130.05718.22
5.5.270.0100.06017.92
5.5.260.0170.08318.25
5.5.250.0130.08017.90
5.5.240.0100.08017.51
5.5.230.0170.06317.47
5.5.220.0170.04717.52
5.5.210.0070.07317.52
5.5.200.0130.05017.29
5.5.190.0130.06717.49
5.5.180.0130.04717.19
5.5.160.0070.06717.41
5.5.150.0070.05317.52
5.5.140.0070.05317.18
5.5.130.0000.05717.52
5.5.120.0130.05717.20
5.5.110.0070.05317.57
5.5.100.0100.05017.42
5.5.90.0100.05017.10
5.5.80.0100.05317.49
5.5.70.0270.03717.07
5.5.60.0100.07017.36
5.5.50.0070.07017.25
5.5.40.0100.05017.46
5.5.30.0130.05317.29
5.5.20.0070.05317.33
5.5.10.0170.06317.37
5.5.00.0000.06017.09
5.4.450.0200.07019.29
5.4.440.0030.08319.57
5.4.430.0200.07319.32
5.4.420.0100.08319.27
5.4.410.0130.07719.44
5.4.400.0070.08019.28
5.4.390.0100.07319.03
5.4.380.0070.08319.00
5.4.370.0170.05719.09
5.4.360.0000.06318.95
5.4.350.0030.05719.01
5.4.340.0170.04318.99
5.4.320.0200.06018.99
5.4.310.0130.04719.12
5.4.300.0030.05319.24
5.4.290.0030.05319.01
5.4.280.0030.05718.95
5.4.270.0100.04719.02
5.4.260.0100.05019.18
5.4.250.0030.06019.08
5.4.240.0070.07019.01
5.4.230.0070.07319.02
5.4.220.0100.05019.24
5.4.210.0100.05319.16
5.4.200.0100.06018.99
5.4.190.0200.04719.08
5.4.180.0200.04018.97
5.4.170.0130.04719.10
5.4.160.0100.05019.12
5.4.150.0030.05719.20
5.4.140.0100.04716.54
5.4.130.0070.05016.49
5.4.120.0130.04316.46
5.4.110.0100.05016.59
5.4.100.0000.05716.66
5.4.90.0100.04716.40
5.4.80.0070.05016.54
5.4.70.0100.04716.45
5.4.60.0230.04316.23
5.4.50.0100.04716.52
5.4.40.0100.04716.43
5.4.30.0070.05016.47
5.4.20.0100.05016.51
5.4.10.0130.04716.56
5.4.00.0070.05315.92
5.3.290.0100.06314.62
5.3.280.0100.04714.68
5.3.270.0130.05014.60
5.3.260.0030.05714.60
5.3.250.0170.04014.70
5.3.240.0200.04014.46
5.3.230.0070.05014.60
5.3.220.0100.04714.58
5.3.210.0230.04014.56
5.3.200.0070.05314.56
5.3.190.0030.06014.42
5.3.180.0100.05014.57
5.3.170.0030.05714.42
5.3.160.0200.04314.63
5.3.150.0270.04714.65
5.3.140.0130.04314.58
5.3.130.0070.05314.40
5.3.120.0070.05314.50
5.3.110.0000.06314.56
5.3.100.0070.05314.04
5.3.90.0030.05714.02
5.3.80.0100.04714.02
5.3.70.0070.05713.97
5.3.60.0100.06713.97
5.3.50.0130.06314.04
5.3.40.0000.05714.03
5.3.30.0070.04714.07
5.3.20.0030.05013.71
5.3.10.0070.04713.61
5.3.00.0070.04713.80
5.2.170.0030.04311.13
5.2.160.0070.04711.21
5.2.150.0100.03711.14
5.2.140.0000.05011.20
5.2.130.0030.04010.97
5.2.120.0030.04011.08
5.2.110.0000.04311.10
5.2.100.0130.03011.07
5.2.90.0000.04311.12
5.2.80.0100.03710.95
5.2.70.0070.05311.04
5.2.60.0130.05011.11
5.2.50.0030.04310.97
5.2.40.0130.03311.07
5.2.30.0030.04310.92
5.2.20.0030.04710.82
5.2.10.0000.04710.82
5.2.00.0070.05310.78
5.1.60.0030.04710.07
5.1.50.0130.0379.96
5.1.40.0070.0379.98
5.1.30.0030.04310.50
5.1.20.0000.04710.35
5.1.10.0030.03710.16
5.1.00.0000.04010.04
5.0.50.0070.0278.62
5.0.40.0000.0338.38
5.0.30.0030.0438.19
5.0.20.0000.0308.28
5.0.10.0000.0338.18
5.0.00.0070.0408.15
4.4.90.0000.0307.63
4.4.80.0100.0137.63
4.4.70.0070.0177.63
4.4.60.0000.0237.63
4.4.50.0000.0237.63
4.4.40.0030.0407.63
4.4.30.0030.0277.63
4.4.20.0000.0237.63
4.4.10.0000.0277.63
4.4.00.0000.0337.63
4.3.110.0000.0237.63
4.3.100.0000.0237.63
4.3.90.0000.0237.63
4.3.80.0030.0337.63
4.3.70.0000.0207.63
4.3.60.0030.0207.63
4.3.50.0000.0237.63
4.3.40.0030.0307.63
4.3.30.0030.0207.63
4.3.20.0030.0207.63
4.3.10.0030.0207.63
4.3.00.0000.0277.63

preferences:
142.15 ms | 1394 KiB | 7 Q