3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 0; function passByReference(&$a) { return $a++; } function passByValue($a) { return --$a; } echo $a."\n"; $b = passByValue($a); echo "b = $b \n"; echo $a."\n"; passByReference($a); echo $a."\n";

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)
8.3.60.0040.01116.48
8.3.50.0100.00318.03
8.3.40.0150.00818.86
8.3.30.0110.00318.48
8.3.20.0040.00418.65
8.3.10.0080.00021.90
8.3.00.0040.00421.90
8.2.180.0120.00616.38
8.2.170.0110.00422.96
8.2.160.0040.01122.00
8.2.150.0020.00524.18
8.2.140.0070.00024.66
8.2.130.0040.00419.45
8.2.120.0000.00726.35
8.2.110.0100.00021.04
8.2.100.0000.01217.72
8.2.90.0000.00819.25
8.2.80.0000.00817.97
8.2.70.0030.00617.63
8.2.60.0000.00719.34
8.2.50.0040.00418.10
8.2.40.0040.00420.59
8.2.30.0070.00021.16
8.2.20.0050.00318.04
8.2.10.0040.00418.13
8.2.00.0000.00717.62
8.1.280.0140.00725.92
8.1.270.0000.00823.99
8.1.260.0040.00428.09
8.1.250.0000.00728.09
8.1.240.0060.00322.14
8.1.230.0060.00617.52
8.1.220.0040.00417.79
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0070.00317.35
8.1.180.0040.00418.10
8.1.170.0000.00818.58
8.1.160.0070.00023.82
8.1.150.0040.00418.87
8.1.140.0040.00419.39
8.1.130.0000.00717.55
8.1.120.0030.00517.30
8.1.110.0080.00017.41
8.1.100.0000.00717.44
8.1.90.0000.00817.22
8.1.80.0000.00817.31
8.1.70.0040.00417.40
8.1.60.0030.00517.65
8.1.50.0080.00017.56
8.1.40.0030.00617.58
8.1.30.0030.00517.65
8.1.20.0070.00017.63
8.1.10.0040.00417.48
8.1.00.0000.00817.30
8.0.300.0070.00018.77
8.0.290.0000.00816.75
8.0.280.0030.00318.46
8.0.270.0040.00417.26
8.0.260.0000.00617.25
8.0.250.0030.00316.97
8.0.240.0040.00416.89
8.0.230.0080.00016.98
8.0.220.0000.00716.76
8.0.210.0000.00716.93
8.0.200.0030.00316.83
8.0.190.0040.00416.97
8.0.180.0100.00016.89
8.0.170.0000.00916.95
8.0.160.0040.00416.89
8.0.150.0030.00316.80
8.0.140.0000.00816.88
8.0.130.0000.00613.34
8.0.120.0030.00516.87
8.0.110.0040.00416.73
8.0.100.0000.00716.69
8.0.90.0070.00016.84
8.0.80.0090.00916.86
8.0.70.0000.00816.82
8.0.60.0070.00016.89
8.0.50.0000.00716.79
8.0.30.0070.01216.97
8.0.20.0090.01017.40
8.0.10.0000.00717.00
8.0.00.0080.01116.59
7.4.330.0030.00315.55
7.4.320.0000.00616.48
7.4.300.0060.00016.66
7.4.290.0000.00816.61
7.4.280.0040.00416.51
7.4.270.0000.00716.53
7.4.260.0030.00316.60
7.4.250.0000.00716.48
7.4.240.0040.00416.37
7.4.230.0070.00016.41
7.4.220.0090.00916.63
7.4.210.0120.00916.46
7.4.200.0040.00316.58
7.4.160.0060.01016.50
7.4.150.0140.00317.40
7.4.140.0070.01017.86
7.4.130.0100.01116.47
7.4.120.0100.00716.43
7.4.110.0110.00716.50
7.4.100.0070.01016.31
7.4.90.0150.01316.60
7.4.80.0100.00619.39
7.4.70.0130.00316.38
7.4.60.0100.00616.35
7.4.50.0150.00016.45
7.4.40.0090.00616.20
7.4.30.0110.01116.46
7.4.00.0090.00914.94
7.3.330.0000.00613.31
7.3.320.0000.00613.19
7.3.310.0030.00316.36
7.3.300.0060.00016.40
7.3.290.0090.00916.40
7.3.280.0120.01116.34
7.3.270.0350.00617.40
7.3.260.0160.00316.43
7.3.250.0080.00916.36
7.3.240.0080.00816.51
7.3.230.0130.00316.39
7.3.210.0040.01316.55
7.3.200.0030.01316.67
7.3.190.0090.00616.50
7.3.180.0180.00416.40
7.3.170.0130.00316.59
7.3.160.0030.01716.39
7.3.120.0030.01414.81
7.3.110.0020.01414.97
7.3.100.0050.00714.89
7.3.90.0090.00314.78
7.3.80.0080.00314.92
7.3.70.0050.00914.66
7.3.60.0080.00514.96
7.3.50.0030.00814.88
7.3.40.0050.00714.78
7.3.30.0070.00714.59
7.3.20.0050.00816.61
7.3.10.0020.00916.46
7.3.00.0040.00716.56
7.2.330.0080.00816.54
7.2.320.0110.01116.75
7.2.310.0090.00916.52
7.2.300.0070.01516.80
7.2.290.0040.01216.61
7.2.250.0090.00815.14
7.2.240.0090.00914.89
7.2.230.0080.00815.24
7.2.220.0030.01215.04
7.2.210.0020.00815.14
7.2.200.0050.00615.05
7.2.190.0030.00814.98
7.2.180.0060.00614.88
7.2.170.0050.00815.00
7.2.00.0070.00419.57
7.1.330.0080.00815.71
7.1.320.0040.00915.78
7.1.310.0060.00515.76
7.1.300.0040.00715.73
7.1.290.0030.00815.63
7.1.280.0030.01215.79
7.1.270.0060.00615.72
7.1.260.0050.00815.74
7.1.70.0050.00817.18
7.1.60.0000.01517.24
7.1.50.0040.01116.96
7.1.40.0060.00616.42
7.1.30.0140.00216.66
7.1.20.0090.00616.86
7.1.10.0030.01016.64
7.1.00.0030.00516.57
7.0.200.0080.00816.75
7.0.190.0090.00416.55
7.0.180.0080.00416.32
7.0.170.0040.01116.32
7.0.160.0000.01316.32
7.0.150.0160.00016.32
7.0.140.0080.00416.32
7.0.130.0480.00816.48
7.0.120.0090.00616.63
7.0.110.0060.00616.32
7.0.100.0050.00916.32
7.0.90.0070.00716.35
7.0.80.0070.00916.41
7.0.70.0080.00416.37
7.0.60.0000.01116.32
7.0.50.0070.00716.44
7.0.40.0130.00016.32
7.0.30.0100.00316.32
7.0.20.0040.00816.32
7.0.10.0040.00816.32
7.0.00.0000.00916.32
5.6.300.0080.04220.58
5.6.290.0140.03820.80
5.6.280.0100.04521.04
5.6.270.0280.04520.88
5.6.260.0100.04420.98
5.6.250.0000.05320.88
5.6.240.0070.04720.84
5.6.230.0030.04820.96
5.6.220.0070.04420.82
5.6.210.0070.04621.01
5.6.200.0030.05021.06
5.6.190.0040.05120.93
5.6.180.0150.03921.05
5.6.170.0040.04320.73
5.6.160.0030.05420.93
5.6.150.0070.03920.84
5.6.140.0060.04520.99
5.6.130.0000.04920.82
5.6.120.0030.04420.86
5.6.110.0070.04520.82
5.6.100.0110.04920.82
5.6.90.0040.05120.81
5.6.80.0160.07320.44
5.6.70.0100.03520.33
5.6.60.0130.03820.21
5.6.50.0030.07120.16
5.6.40.0030.04720.29
5.6.30.0030.05020.41
5.6.20.0100.08420.28
5.6.10.0130.04120.28
5.6.00.0030.05520.17

preferences:
34.91 ms | 400 KiB | 5 Q