3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "foo"; $b = str_repeat("a", 3); echo "Static Var\n"; testCopy($a); echo "Dynamic Var\n"; testCopy($b); function testCopy($var) { echo memory_get_usage() . "\n"; $var = (string) $var; 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)
7.3.10.0080.00716.42
7.3.00.0020.00916.46
7.2.130.0060.01016.72
7.2.120.0060.00716.80
7.2.110.0020.01216.57
7.2.100.0080.00516.81
7.2.90.0100.00416.92
7.2.80.0060.00916.90
7.2.70.0070.00716.78
7.2.60.0040.00916.67
7.2.50.0080.00316.76
7.2.40.0050.00716.63
7.2.30.0030.00816.76
7.2.20.0090.00616.80
7.2.10.0070.01016.91
7.2.00.0080.00317.60
7.1.250.0080.00615.53
7.1.70.0000.00816.86
7.1.60.0100.01419.32
7.1.50.0070.01416.99
7.1.00.0100.07022.31
7.0.200.0070.00316.79
7.0.140.0100.06721.96
7.0.100.0370.08719.98
7.0.90.0330.05319.96
7.0.80.0370.05019.97
7.0.70.0330.08719.98
7.0.60.0330.05319.98
7.0.50.0300.08320.35
7.0.40.0070.06720.14
7.0.30.0030.05720.11
7.0.20.0070.04320.13
7.0.10.0070.04020.09
7.0.00.0030.06320.08
5.6.280.0030.07320.93
5.6.250.0170.06020.73
5.6.240.0130.06320.61
5.6.230.0170.07020.53
5.6.220.0030.08020.57
5.6.210.0070.08320.44
5.6.200.0100.07721.14
5.6.190.0100.04721.05
5.6.180.0000.07321.04
5.6.170.0030.08321.07
5.6.160.0100.08321.03
5.6.150.0100.05021.11
5.6.140.0030.08321.08
5.6.130.0200.04021.08
5.6.120.0070.05321.10
5.6.110.0070.07321.04
5.6.100.0070.04321.05
5.6.90.0170.07321.09
5.6.80.0100.07020.46
5.6.70.0100.06020.46
5.6.60.0030.05020.40
5.6.50.0130.07720.32
5.6.40.0070.06020.32
5.6.30.0200.05320.41
5.6.20.0070.08020.36
5.6.10.0100.07720.40
5.6.00.0100.08020.42
5.5.380.0100.08020.39
5.5.370.0070.08320.55
5.5.360.0170.06320.37
5.5.350.0070.05320.33
5.5.340.0070.05020.88
5.5.330.0030.08720.88
5.5.320.0170.06720.75
5.5.310.0070.07020.83
5.5.300.0000.06320.73
5.5.290.0000.08320.88
5.5.280.0100.08020.90
5.5.270.0070.08020.88
5.5.260.0170.06020.74
5.5.250.0000.09320.74
5.5.240.0070.08020.16
5.5.230.0100.07720.21
5.5.220.0100.06320.01
5.5.210.0100.08020.21
5.5.200.0100.08320.27
5.5.190.0000.04720.13
5.5.180.0130.07720.24
5.5.160.0130.07320.30
5.5.150.0130.06320.22
5.5.140.0100.06720.25
5.5.130.0100.05020.11
5.5.120.0070.03720.18
5.5.110.0070.04720.24
5.5.100.0030.04020.05
5.5.90.0100.05019.95
5.5.80.0100.04320.11
5.5.70.0030.05720.12
5.5.60.0030.04319.94
5.5.50.0030.04020.04
5.5.40.0000.04720.06
5.5.30.0030.04020.09
5.5.20.0000.04320.16
5.5.10.0030.04020.02
5.5.00.0000.04020.12
5.4.450.0070.04019.25
5.4.440.0100.08019.37
5.4.430.0070.08319.26
5.4.420.0030.06019.20
5.4.410.0130.07019.34
5.4.400.0100.04719.13
5.4.390.0100.06718.90
5.4.380.0070.06719.03
5.4.370.0070.07719.23
5.4.360.0100.06719.05
5.4.350.0200.07019.12
5.4.340.0170.07019.03
5.4.320.0100.06319.04
5.4.310.0130.05719.23
5.4.300.0030.08019.03
5.4.290.0000.07719.04
5.4.280.0070.05019.20
5.4.270.0000.04718.90
5.4.260.0000.04319.12
5.4.250.0100.04719.12
5.4.240.0030.04719.22
5.4.230.0100.03319.04
5.4.220.0030.04019.04
5.4.210.0030.04319.03
5.4.200.0070.04319.23
5.4.190.0000.04019.02
5.4.180.0030.04018.85
5.4.170.0000.04019.19
5.4.160.0100.05019.08
5.4.150.0000.04319.18
5.4.140.0070.03716.39
5.4.130.0070.03716.40
5.4.120.0030.04716.38
5.4.110.0030.03316.39
5.4.100.0070.06016.46
5.4.90.0130.02716.33
5.4.80.0000.03016.47
5.4.70.0070.03316.38
5.4.60.0030.03716.36
5.4.50.0000.04316.41
5.4.40.0030.03316.42
5.4.30.0070.03016.31
5.4.20.0000.04016.44
5.4.10.0030.04016.32
5.4.00.0030.04315.74
5.3.290.0100.06014.63
5.3.280.0000.04314.55
5.3.270.0030.03714.59
5.3.260.0030.04314.53
5.3.250.0030.03714.57
5.3.240.0000.03714.56
5.3.230.0070.03314.57
5.3.220.0070.03314.53
5.3.210.0000.04014.63
5.3.200.0030.04014.55
5.3.190.0000.04014.63
5.3.180.0070.03014.68
5.3.170.0000.04014.55
5.3.160.0100.03014.62
5.3.150.0070.03014.56
5.3.140.0030.03714.54
5.3.130.0070.03714.49
5.3.120.0070.03314.55
5.3.110.0030.04314.55
5.3.100.0000.04014.14
5.3.90.0030.03714.15
5.3.80.0070.03013.90
5.3.70.0030.03014.11
5.3.60.0030.03713.92
5.3.50.0000.03714.01
5.3.40.0070.03313.94
5.3.30.0070.03314.02
5.3.20.0030.03313.82
5.3.10.0030.03313.55
5.3.00.0100.03013.54
5.2.170.0070.02312.85
5.2.160.0030.02712.85
5.2.150.0070.02712.85
5.2.140.0030.02712.85
5.2.130.0000.02712.85
5.2.120.0030.03012.85
5.2.110.0030.02312.85
5.2.100.0130.02012.85
5.2.90.0000.02312.85
5.2.80.0030.03312.85
5.2.70.0070.02012.85
5.2.60.0030.02312.85
5.2.50.0070.02012.85
5.2.40.0070.02012.85
5.2.30.0070.03012.85
5.2.20.0000.03012.85
5.2.10.0030.02712.85
5.2.00.0070.02312.85
5.1.60.0100.02012.85
5.1.50.0030.04312.85
5.1.40.0070.02712.85
5.1.30.0000.02712.85
5.1.20.0000.05712.85
5.1.10.0000.05712.85
5.1.00.0070.05012.85
5.0.50.0000.02012.85
5.0.40.0030.02712.85
5.0.30.0070.02012.85
5.0.20.0030.02012.85
5.0.10.0030.02712.85
5.0.00.0070.06012.85
4.4.90.0000.01312.85
4.4.80.0030.01312.85
4.4.70.0000.01712.85
4.4.60.0000.02312.85
4.4.50.0000.01712.85
4.4.40.0000.03012.85
4.4.30.0000.02312.85
4.4.20.0000.03012.85
4.4.10.0000.01712.85
4.4.00.0030.03312.85
4.3.110.0000.01712.85
4.3.100.0000.01312.85
4.3.90.0000.02712.85
4.3.80.0030.03312.85
4.3.70.0030.01312.85
4.3.60.0000.02012.85
4.3.50.0000.02012.85
4.3.40.0030.05312.85
4.3.30.0030.02012.85
4.3.20.0070.03012.85
4.3.10.0000.03012.85
4.3.00.0000.01312.85

preferences:
36.7 ms | 401 KiB | 5 Q