3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set("display_errors","On"); error_reporting(E_ALL); function without($var){ echo "Certain death\n"; echo memory_get_usage(), PHP_EOL; } function with(&$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)
7.4.00.0070.01015.04
7.3.120.0060.00915.06
7.3.110.0080.00815.02
7.3.100.0100.00714.96
7.3.90.0090.00615.00
7.3.80.0040.01115.01
7.3.70.0030.00915.09
7.3.60.0060.00615.12
7.3.50.0160.00014.96
7.3.40.0030.01015.11
7.3.30.0040.01115.18
7.3.20.0040.01116.63
7.3.10.0100.00016.63
7.3.00.0080.00616.63
7.2.250.0130.00715.36
7.2.240.0130.00715.38
7.2.230.0040.01115.31
7.2.220.0070.01115.37
7.2.210.0070.01015.37
7.2.200.0000.01415.23
7.2.190.0090.00615.00
7.2.180.0000.00915.23
7.2.170.0110.00315.36
7.2.160.0060.00915.11
7.2.150.0060.00616.75
7.2.140.0000.01016.63
7.2.130.0070.01016.46
7.2.120.0070.00716.85
7.2.110.0130.00317.00
7.2.100.0060.00316.92
7.2.90.0100.00316.65
7.2.80.0000.01616.57
7.2.70.0060.00316.91
7.2.60.0030.01016.98
7.2.50.0070.00716.82
7.2.40.0070.01017.02
7.2.30.0000.01316.85
7.2.20.0030.00616.67
7.2.10.0070.00716.57
7.2.00.0050.00818.12
7.1.330.0060.00315.84
7.1.320.0060.00615.69
7.1.310.0030.00615.82
7.1.300.0000.01615.56
7.1.290.0030.00915.78
7.1.280.0070.00415.45
7.1.270.0090.00615.64
7.1.260.0070.00715.78
7.1.250.0100.00315.77
7.1.240.0000.00815.53
7.1.230.0040.01215.73
7.1.220.0080.00515.64
7.1.210.0060.00915.91
7.1.200.0100.00315.56
7.1.190.0090.00615.73
7.1.180.0000.01415.55
7.1.170.0030.00715.77
7.1.160.0110.00315.66
7.1.150.0070.00715.82
7.1.140.0030.00915.91
7.1.130.0030.00715.77
7.1.120.0030.01015.91
7.1.110.0070.00715.59
7.1.100.0000.01315.87
7.1.90.0090.00315.89
7.1.80.0100.00315.70
7.1.70.0110.00616.24
7.1.60.0110.00617.56
7.1.50.0080.01016.37
7.1.40.0040.00715.93
7.1.30.0060.00815.83
7.1.20.0060.00915.46
7.1.10.0030.01015.74
7.1.00.0070.04119.14
7.0.330.0080.00415.37
7.0.320.0100.00315.21
7.0.310.0000.01715.35
7.0.300.0080.00415.49
7.0.290.0070.01015.27
7.0.280.0060.00615.30
7.0.270.0070.00715.47
7.0.260.0070.00715.28
7.0.250.0030.01015.34
7.0.240.0060.00615.42
7.0.230.0000.01115.56
7.0.220.0030.01015.13
7.0.210.0040.01115.49
7.0.200.0060.00415.94
7.0.190.0030.00615.30
7.0.180.0130.00015.15
7.0.170.0060.00615.38
7.0.160.0100.00015.29
7.0.150.0030.01315.42
7.0.140.0090.03718.65
7.0.130.0070.00715.43
7.0.120.0060.00915.48
7.0.110.0100.00015.38
7.0.100.0040.00815.10
7.0.90.0040.00715.47
7.0.80.0040.01115.37
7.0.70.0040.00415.38
7.0.60.0070.04017.80
7.0.50.0040.02316.68
7.0.40.0070.04616.80
7.0.30.0130.02516.92
7.0.20.0140.02116.82
7.0.10.0070.04716.84
7.0.00.0050.04416.89
5.6.400.0060.00914.38
5.6.390.0000.01114.29
5.6.380.0120.00314.32
5.6.370.0090.00914.23
5.6.360.0030.01014.36
5.6.350.0040.01114.53
5.6.340.0110.00014.21
5.6.330.0110.00414.34
5.6.320.0060.00313.95
5.6.310.0070.00714.63
5.6.300.0030.01014.23
5.6.290.0080.00314.51
5.6.280.0060.04017.84
5.6.270.0040.00414.63
5.6.260.0030.00914.40
5.6.250.0030.01014.70
5.6.240.0030.00914.58
5.6.230.0030.01014.33
5.6.220.0110.00314.37
5.6.210.0070.04617.56
5.6.200.0050.04516.39
5.6.190.0000.03817.49
5.6.180.0150.04317.41
5.6.170.0080.04117.60
5.6.160.0030.04517.68
5.6.150.0050.04316.29
5.6.140.0030.02716.22
5.6.130.0030.03216.34
5.6.120.0080.04017.97
5.6.110.0060.04618.02
5.6.100.0060.03317.88
5.6.90.0120.04217.71
5.6.80.0080.03717.53
5.6.70.2220.02017.40
5.6.60.0000.01514.09
5.6.50.0030.01013.98
5.6.40.0110.00414.30
5.6.30.0120.00314.48
5.6.20.0060.00814.58
5.6.10.0030.00614.39
5.6.00.0070.00714.55
5.5.380.0060.00614.23
5.5.370.0040.01214.37
5.5.360.0070.00314.23
5.5.350.0070.04717.49
5.5.340.0090.03816.05
5.5.330.0070.03617.39
5.5.320.0050.04717.37
5.5.310.0230.03017.34
5.5.300.0050.04116.25
5.5.290.0080.02216.39
5.5.280.0090.02217.83
5.5.270.0100.04317.68
5.5.260.0070.03717.57
5.5.250.0120.03217.71
5.5.240.0140.03317.36
5.5.230.0000.01514.18
5.5.220.0040.00414.32
5.5.210.0090.00614.33
5.5.200.0110.00414.33
5.5.190.0120.00014.30
5.5.180.0040.00814.11
5.5.170.0030.01014.35
5.5.160.0040.01414.37
5.5.150.0100.00614.32
5.5.140.0000.01014.33
5.5.130.0030.01014.09
5.5.120.0060.01014.16
5.5.110.0000.01414.07
5.5.100.0090.00314.44
5.5.90.0090.00914.40
5.5.80.0070.01114.21
5.5.70.0090.00614.04
5.5.60.0050.00814.16
5.5.50.0070.01014.41
5.5.40.0070.00714.25
5.5.30.0060.01014.37
5.5.20.0060.00914.36
5.5.10.0060.00614.07
5.5.00.0040.00913.93
5.4.450.0110.02316.00
5.4.440.0100.02516.00
5.4.430.0240.02216.02
5.4.420.0170.02915.97
5.4.410.0170.02815.94
5.4.400.0290.02215.90
5.4.390.0030.02115.84
5.4.380.0330.03015.63
5.4.370.0230.02815.71
5.4.360.0220.02715.62
5.4.350.0220.02715.62
5.4.340.0140.03715.61
5.4.330.0060.00312.40
5.4.320.0070.02012.58
5.4.310.0040.02112.57
5.4.300.0080.01812.58
5.4.290.0040.02112.57
5.4.280.0060.02012.52
5.4.270.0040.02212.53
5.4.260.0040.02412.52
5.4.250.0080.01712.53
5.4.240.0040.02012.52
5.4.230.0040.02412.52
5.4.220.0040.02212.52
5.4.210.0100.01812.52
5.4.200.0070.02012.52
5.4.190.0050.02212.52
5.4.180.0050.02112.52
5.4.170.0040.02212.52
5.4.160.0040.02212.52
5.4.150.0060.02412.52
5.4.140.0090.01912.36
5.4.130.0080.02412.35
5.4.120.0060.02112.33
5.4.110.0040.02512.33
5.4.100.0020.02512.33
5.4.90.0070.02212.33
5.4.80.0080.02012.33
5.4.70.0060.01912.33
5.4.60.0070.01812.33
5.4.50.0050.02212.33
5.4.40.0050.02212.32
5.4.30.0060.01912.32
5.4.20.0050.02012.32
5.4.10.0060.02212.32
5.4.00.0020.02412.06
5.3.290.0070.03612.96
5.3.280.0040.04412.89
5.3.270.0060.03812.90
5.3.260.0110.03812.89
5.3.250.0070.03512.89
5.3.240.0050.04212.89
5.3.230.0040.04012.89
5.3.220.0060.03612.86
5.3.210.0050.03812.86
5.3.200.0060.03512.86
5.3.190.0090.03312.86
5.3.180.0040.03712.85
5.3.170.0040.03612.86
5.3.160.0040.04212.86
5.3.150.0050.04112.85
5.3.140.0080.04312.85
5.3.130.0060.03712.84
5.3.120.0060.03912.84
5.3.110.0050.03812.84
5.3.100.0030.03812.34
5.3.90.0060.03412.32
5.3.80.0050.03612.31
5.3.70.0050.03912.31
5.3.60.0090.03512.29
5.3.50.0040.04012.24
5.3.40.0080.03812.24
5.3.30.0020.04012.20
5.3.20.0060.03511.98
5.3.10.0050.03411.95
5.3.00.0020.03811.93
5.2.170.0040.0299.42
5.2.160.0050.0299.43
5.2.150.0070.0329.42
5.2.140.0050.0299.42
5.2.130.0050.0279.38
5.2.120.0070.0269.38
5.2.110.0040.0309.38
5.2.100.0040.0299.38
5.2.90.0050.0299.38
5.2.80.0040.0319.37
5.2.70.0060.0289.37
5.2.60.0050.0299.33
5.2.50.0030.0309.30
5.2.40.0020.0319.27
5.2.30.0030.0319.24
5.2.20.0010.0319.23
5.2.10.0010.0309.14
5.2.00.0040.0299.01
5.1.60.0020.0278.29
5.1.50.0080.0268.29
5.1.40.0050.0258.27
5.1.30.0060.0248.61
5.1.20.0040.0278.64
5.1.10.0070.0298.36
5.1.00.0030.0318.36
5.0.50.0020.0226.85
5.0.40.0060.0176.70
5.0.30.0030.0346.51
5.0.20.0050.0186.48
5.0.10.0010.0226.46
5.0.00.0040.0306.45
4.4.90.0030.0154.88
4.4.80.0020.0154.86
4.4.70.0040.0184.86
4.4.60.0000.0194.86
4.4.50.0030.0154.88
4.4.40.0030.0244.87
4.4.30.0020.0164.87
4.4.20.0030.0164.93
4.4.10.0010.0174.93
4.4.00.0050.0294.90
4.3.110.0050.0174.80
4.3.100.0030.0144.80
4.3.90.0020.0154.77
4.3.80.0020.0254.77
4.3.70.0040.0134.77
4.3.60.0020.0194.78
4.3.50.0040.0144.77
4.3.40.0040.0324.72
4.3.30.0030.0223.53
4.3.20.0020.0223.51
4.3.10.0020.0223.47
4.3.00.0070.01718.23

preferences:
38.73 ms | 400 KiB | 5 Q