3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = '.'; $a = ''; for ($i=0;$i<1000;$i++) $a = "$a$x"; unset($a,$x); echo memory_get_usage()."\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)
7.4.00.0060.01215.05
7.3.120.0090.00914.92
7.3.110.0100.00915.00
7.3.100.0060.01014.69
7.3.90.0080.00514.87
7.3.80.0070.00714.83
7.3.70.0080.00815.01
7.3.60.0040.01114.87
7.3.50.0090.00514.76
7.3.40.0060.00714.66
7.3.30.0060.00814.82
7.3.20.0050.00616.63
7.3.10.0060.00616.68
7.3.00.0040.00916.74
7.2.250.0030.01515.21
7.2.240.0030.01515.23
7.2.230.0110.00414.94
7.2.220.0050.01015.15
7.2.210.0070.00614.82
7.2.200.0100.00514.96
7.2.190.0060.01114.90
7.2.180.0020.01114.99
7.2.170.0100.00514.96
7.2.160.0000.01014.81
7.2.150.0110.00417.00
7.2.140.0070.00716.91
7.2.130.0140.00317.03
7.2.120.0040.01116.98
7.2.110.0100.00316.89
7.2.100.0090.00616.64
7.2.90.0090.00616.71
7.2.80.0120.00016.84
7.2.70.0100.01016.92
7.2.60.0040.01517.01
7.2.50.0130.00017.11
7.2.40.0100.00317.06
7.2.30.0120.00016.99
7.2.20.0100.00316.85
7.2.10.0060.01016.73
7.2.00.0000.01416.80
7.1.330.0020.01315.81
7.1.320.0080.00715.67
7.1.310.0020.01115.65
7.1.300.0100.00415.65
7.1.290.0080.00315.77
7.1.280.0020.01015.76
7.1.270.0050.00815.84
7.1.260.0050.00715.68
7.1.250.0060.00615.94
7.1.70.0070.00217.15
7.1.60.0070.01719.40
7.1.50.0000.02216.92
7.1.00.0030.05722.51
7.0.200.0040.00416.46
7.0.140.0070.07022.04
7.0.120.0070.06021.98
7.0.60.0100.05019.95
7.0.50.0100.08017.82
7.0.40.0070.07017.70
7.0.30.0070.04017.66
7.0.20.0170.06717.79
7.0.10.0030.05317.79
7.0.00.0100.04017.75
5.6.280.0030.07320.80
5.6.210.0070.08020.66
5.6.200.0030.05018.18
5.6.190.0030.07018.18
5.6.180.0100.07718.18
5.6.170.0070.08718.13
5.6.160.0070.04018.23
5.6.150.0030.07718.12
5.6.140.0070.06718.22
5.6.130.0130.06018.21
5.6.120.0130.08018.12
5.6.110.0170.07018.21
5.6.100.0100.08018.08
5.6.90.0100.08018.07
5.6.80.0030.07317.60
5.6.70.0100.03717.45
5.6.60.0100.06317.55
5.6.50.0030.04717.47
5.6.40.0130.03017.47
5.6.30.0070.05717.45
5.6.20.0070.07017.46
5.6.10.0070.05017.47
5.6.00.0100.07317.51
5.5.350.0230.05020.49
5.5.340.0070.05317.95
5.5.330.0030.05017.98
5.5.320.0030.06718.01
5.5.310.0030.07717.92
5.5.300.0030.08317.92
5.5.290.0100.03717.93
5.5.280.0170.07717.95
5.5.270.0070.08018.00
5.5.260.0000.04718.00
5.5.250.0030.04317.77
5.5.240.0100.06717.29
5.5.230.0030.05017.39
5.5.220.0170.07317.28
5.5.210.0070.07017.41
5.5.200.0100.06017.37
5.5.190.0070.07717.24
5.5.180.0100.07717.33
5.5.160.0100.07317.28
5.5.150.0130.05017.32
5.5.140.0070.07317.30
5.5.130.0070.04017.32
5.5.120.0130.07317.36
5.5.110.0070.05317.32
5.5.100.0100.06717.14
5.5.90.0030.05017.22
5.5.80.0030.08317.21
5.5.70.0070.06017.14
5.5.60.0130.07017.26
5.5.50.0130.07317.26
5.5.40.0030.07017.24
5.5.30.0000.08017.22
5.5.20.0100.03317.25
5.5.10.0130.06717.25
5.5.00.0030.08717.20
5.4.450.0030.08719.37
5.4.440.0000.06019.39
5.4.430.0100.05319.29
5.4.420.0030.08019.30
5.4.410.0070.07019.16
5.4.400.0130.07319.03
5.4.390.0130.06719.03
5.4.380.0070.07718.98
5.4.370.0100.07319.03
5.4.360.0030.07019.07
5.4.350.0070.08018.98
5.4.340.0070.03719.13
5.4.320.0070.06718.98
5.4.310.0030.06018.96
5.4.300.0130.07318.82
5.4.290.0130.07019.09
5.4.280.0070.08018.95
5.4.270.0030.07018.96
5.4.260.0100.05319.09
5.4.250.0070.05019.02
5.4.240.0130.06719.19
5.4.230.0200.06319.21
5.4.220.0170.07019.12
5.4.210.0100.06318.97
5.4.200.0030.07719.02
5.4.190.0130.07018.97
5.4.180.0070.08018.80
5.4.170.0130.07719.11
5.4.160.0130.04319.07
5.4.150.0100.03318.80
5.4.140.0030.06316.37
5.4.130.0100.07316.16
5.4.120.0130.04316.29
5.4.110.0070.04716.30
5.4.100.0000.04016.19
5.4.90.0030.04316.42
5.4.80.0000.03716.41
5.4.70.0000.04716.28
5.4.60.0000.03716.35
5.4.50.0030.03316.50
5.4.40.0030.03316.38
5.4.30.0030.03316.39
5.4.20.0000.04016.22
5.4.10.0030.03316.40
5.4.00.0000.03715.84
5.3.290.0030.04314.48
5.3.280.0070.08314.55
5.3.270.0000.09014.50
5.3.260.0070.05314.60
5.3.250.0070.04014.71
5.3.240.0030.04014.55
5.3.230.0100.07714.58
5.3.220.0070.07314.38
5.3.210.0070.08014.68
5.3.200.0030.05714.57
5.3.190.0070.03314.52
5.3.180.0070.03314.56
5.3.170.0030.03714.41
5.3.160.0000.04014.55
5.3.150.0000.04014.55
5.3.140.0000.03714.54
5.3.130.0070.03314.55
5.3.120.0100.03014.55
5.3.110.0030.03714.55
5.3.100.0070.03314.00
5.3.90.0030.03313.98
5.3.80.0000.03713.95
5.3.70.0030.03313.99
5.3.60.0000.03713.78
5.3.50.0000.04713.94
5.3.40.0000.03713.93
5.3.30.0000.04013.91
5.3.20.0030.03313.64
5.3.10.0070.07013.59
5.3.00.0000.04013.44
5.2.170.0000.03011.16
5.2.160.0030.02711.14
5.2.150.0070.02311.14
5.2.140.0000.03011.16
5.2.130.0070.02311.08
5.2.120.0000.03010.96
5.2.110.0000.03011.07
5.2.100.0070.02311.27
5.2.90.0070.02311.10
5.2.80.0130.02311.26
5.2.70.0030.02710.95
5.2.60.0000.03310.82
5.2.50.0000.03010.95
5.2.40.0030.03311.02
5.2.30.0000.03010.97
5.2.20.0030.02711.01
5.2.10.0030.03310.75
5.2.00.0070.02310.73
5.1.60.0000.0239.97
5.1.50.0030.0239.97
5.1.40.0030.05710.03
5.1.30.0000.02710.25
5.1.20.0000.02710.31
5.1.10.0000.0279.90
5.1.00.0070.0579.98
5.0.50.0030.0378.46
5.0.40.0030.0338.43
5.0.30.0030.0678.27
5.0.20.0000.0478.18
5.0.10.0030.0478.15
5.0.00.0000.0538.14
4.4.90.0000.0177.46
4.4.80.0070.0107.46
4.4.70.0000.0177.46
4.4.60.0000.0177.46
4.4.50.0000.0177.46
4.4.40.0000.0237.46
4.4.30.0000.0177.46
4.4.20.0070.0137.46
4.4.10.0030.0207.46
4.4.00.0030.0507.46
4.3.110.0000.0237.46
4.3.100.0000.0337.46
4.3.90.0000.0407.46
4.3.80.0030.0237.46
4.3.70.0070.0337.46
4.3.60.0070.0207.46
4.3.50.0000.0407.46
4.3.40.0000.0537.46
4.3.30.0000.0377.46
4.3.20.0000.0307.46
4.3.10.0000.0377.46
4.3.00.0000.0337.46

preferences:
39.42 ms | 400 KiB | 5 Q