3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set("display_errors","On"); error_reporting(E_ALL); function without($var){ echo "Certain death\n"; $var.='die fucker DIE!'; echo memory_get_usage(), PHP_EOL; } function with(&$var){ echo "Alive\n"; echo memory_get_usage(), PHP_EOL; } $str = str_repeat('foo', 100000); echo memory_get_usage(), PHP_EOL; echo "END\n"; with($str); without($str);

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)
7.2.00.0030.01019.32
7.1.70.0040.00416.96
7.1.60.0100.01419.46
7.1.50.0130.01016.77
7.1.00.0030.07722.45
7.0.200.0030.00616.70
7.0.140.0000.07721.96
7.0.110.0170.04020.35
7.0.100.0070.07020.50
7.0.90.0100.08020.44
7.0.80.0070.07720.58
7.0.70.0070.08020.46
7.0.60.0000.06720.52
7.0.50.0030.05320.82
7.0.40.0130.06720.07
7.0.30.0100.08320.01
7.0.20.0070.08320.16
7.0.10.0130.07720.02
7.0.00.0170.04320.14
5.6.280.0000.07721.54
5.6.260.0130.07321.19
5.6.250.0100.08021.12
5.6.240.0100.06021.02
5.6.230.0200.07321.05
5.6.220.0000.08321.00
5.6.210.0100.08021.11
5.6.200.0070.08321.48
5.6.190.0130.07321.57
5.6.180.0070.08321.50
5.6.170.0030.04721.48
5.6.160.0030.08721.68
5.6.150.0070.08021.63
5.6.140.0130.07721.52
5.6.130.0100.07021.45
5.6.120.0100.08721.45
5.6.110.0130.04321.80
5.6.100.0100.05021.77
5.6.90.0070.07721.45
5.6.80.0030.08321.05
5.6.70.0100.07720.95
5.6.60.0100.04321.04
5.6.50.0200.06021.17
5.6.40.0070.08020.84
5.6.30.0070.08020.91
5.6.20.0030.08020.80
5.6.10.0170.07321.13
5.6.00.0070.06721.04
5.5.380.0030.04721.00
5.5.370.0130.07320.82
5.5.360.0000.04720.70
5.5.350.0130.08020.98
5.5.340.0070.08021.53
5.5.330.0100.07321.30
5.5.320.0100.08021.32
5.5.310.0100.08021.32
5.5.300.0100.07321.34
5.5.290.0070.08321.48
5.5.280.0100.08021.47
5.5.270.0070.08321.46
5.5.260.0030.08021.31
5.5.250.0170.04021.34
5.5.240.0100.08020.87
5.5.230.0130.07320.80
5.5.220.0100.08020.59
5.5.210.0100.07720.76
5.5.200.0200.06720.71
5.5.190.0070.07320.64
5.5.180.0130.04720.75
5.5.160.0100.08020.77
5.5.150.0130.07020.56
5.5.140.0030.05020.89
5.5.130.0200.04720.73
5.5.120.0070.08020.67
5.5.110.0230.03320.73
5.5.100.0070.07720.54
5.5.90.0100.04320.56
5.5.80.0070.08020.73
5.5.70.0070.08020.49
5.5.60.0170.05020.54
5.5.50.0130.04320.66
5.5.40.0100.06720.75
5.5.30.0070.07320.64
5.5.20.0130.06720.49
5.5.10.0030.07320.73
5.5.00.0030.08720.63
5.4.450.0130.04319.95
5.4.440.0130.07019.85
5.4.430.0100.08019.91
5.4.420.0070.05319.71
5.4.410.0100.07319.71
5.4.400.0130.07019.44
5.4.390.0070.07719.40
5.4.380.0070.07319.50
5.4.370.0000.08719.62
5.4.360.0030.08019.44
5.4.350.0030.08019.43
5.4.340.0000.08319.62
5.4.320.0070.08019.38
5.4.310.0130.06319.40
5.4.300.0070.07719.39
5.4.290.0200.06319.40
5.4.280.0030.06719.55
5.4.270.0070.07319.48
5.4.260.0070.07719.52
5.4.250.0030.07719.47
5.4.240.0070.04719.79
5.4.230.0130.07019.45
5.4.220.0070.06319.54
5.4.210.0000.08019.63
5.4.200.0030.05319.50
5.4.190.0030.05719.42
5.4.180.0030.08719.51
5.4.170.0130.07019.61
5.4.160.0100.06719.43
5.4.150.0100.07319.69
5.4.140.0000.07716.95
5.4.130.0070.07016.80
5.4.120.0030.04016.98
5.4.110.0070.03716.76
5.4.100.0070.03316.98
5.4.90.0030.03716.95
5.4.80.0070.03716.96
5.4.70.0000.03316.85
5.4.60.0030.03316.94
5.4.50.0100.03716.80
5.4.40.0030.03716.89
5.4.30.0030.03316.86
5.4.20.0070.04716.88
5.4.10.0100.06016.97
5.4.00.0130.06316.33
5.3.290.0000.08014.86
5.3.280.0070.07014.79
5.3.270.0100.07314.95
5.3.260.0030.06714.92
5.3.250.0100.08014.96
5.3.240.0130.03715.04
5.3.230.0030.04314.96
5.3.220.0070.04014.93
5.3.210.0070.03714.91
5.3.200.0000.06014.99
5.3.190.0070.04014.81
5.3.180.0030.04015.07
5.3.170.0000.05014.93
5.3.160.0030.03714.91
5.3.150.0070.03314.98
5.3.140.0070.03314.90
5.3.130.0030.03714.91
5.3.120.0100.03014.89
5.3.110.0100.03714.92
5.3.100.0000.03714.27
5.3.90.0030.08014.39
5.3.80.0070.07014.30
5.3.70.0100.05314.16
5.3.60.0070.07314.37
5.3.50.0100.07014.24
5.3.40.0100.05714.23
5.3.30.0030.04714.20
5.3.20.0000.08013.96
5.3.10.0070.06013.91
5.3.00.0030.03313.92
5.2.170.0000.06311.85
5.2.160.0100.02011.85
5.2.150.0030.06311.85
5.2.140.0030.03011.85
5.2.130.0030.05311.85
5.2.120.0030.04011.85
5.2.110.0030.05011.85
5.2.100.0000.03011.85
5.2.90.0000.04011.85
5.2.80.0000.03711.85
5.2.70.0030.04011.85
5.2.60.0070.02311.85
5.2.50.0000.03311.85
5.2.40.0030.02711.85
5.2.30.0000.04711.85
5.2.20.0000.03311.85
5.2.10.0030.02711.85
5.2.00.0000.03311.85
5.1.60.0000.02711.85
5.1.50.0000.04011.85
5.1.40.0070.02011.85
5.1.30.0030.02711.85
5.1.20.0030.03311.85
5.1.10.0000.03311.85
5.1.00.0070.02011.85
5.0.50.0030.01711.85
5.0.40.0000.02711.85
5.0.30.0000.05011.85
5.0.20.0000.02311.85
5.0.10.0030.01711.85
5.0.00.0030.02711.85
4.4.90.0000.02711.85
4.4.80.0000.01711.85
4.4.70.0000.01711.85
4.4.60.0030.01011.85
4.4.50.0070.00711.85
4.4.40.0000.02711.85
4.4.30.0000.01711.85
4.4.20.0030.01011.85
4.4.10.0000.02711.85
4.4.00.0000.02311.85
4.3.110.0000.01311.85
4.3.100.0000.02011.85
4.3.90.0030.01711.85
4.3.80.0000.02311.85
4.3.70.0030.01011.85
4.3.60.0030.01311.85
4.3.50.0070.01011.85
4.3.40.0000.02711.85
4.3.30.0030.01311.85
4.3.20.0000.01311.85
4.3.10.0000.01311.85
4.3.00.0000.01711.85

preferences:
35.16 ms | 401 KiB | 5 Q