3v4l.org

run code in 300+ PHP versions simultaneously
<?php call_user_func(function(){ echo 'val_val' . PHP_EOL; $a = range(1, 100000); $m = memory_get_usage(); $b = $a; $c = $b; echo ' memory usage: ' . number_format(memory_get_usage() - $m) . PHP_EOL; }); call_user_func(function(){ echo 'ref_val' . PHP_EOL; $a = range(1, 100000); $m = memory_get_usage(); $b = &$a; $c = $b; echo ' memory usage: ' . number_format(memory_get_usage() - $m) . PHP_EOL; }); call_user_func(function(){ echo 'val_ref' . PHP_EOL; $a = range(1, 100000); $m = memory_get_usage(); $b = $a; $c = &$b; echo ' memory usage: ' . number_format(memory_get_usage() - $m) . PHP_EOL; }); call_user_func(function(){ echo 'ref_ref' . PHP_EOL; $a = range(1, 100000); $m = memory_get_usage(); $b = &$a; $c = &$b; echo ' memory usage: ' . number_format(memory_get_usage() - $m) . PHP_EOL; });

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)
7.2.00.0090.00923.43
7.1.70.0120.00621.09
7.1.60.0070.02321.09
7.1.50.0400.01720.71
7.1.00.0030.08026.44
7.0.200.0000.01121.04
7.0.140.0030.07726.38
7.0.100.0300.07722.97
7.0.90.0370.08023.01
7.0.80.0300.07323.08
7.0.70.0070.07023.01
7.0.60.0900.08723.06
7.0.50.0530.04723.32
7.0.40.0130.08323.09
7.0.30.0130.07023.18
7.0.20.0600.08023.16
7.0.10.0270.08023.05
7.0.00.0070.05723.13
5.6.280.0130.14745.18
5.6.250.0200.11044.76
5.6.240.0170.11744.88
5.6.230.0370.14744.37
5.6.220.0370.12344.83
5.6.210.0330.12344.93
5.6.200.0230.14345.24
5.6.190.0230.14745.25
5.6.180.0270.13744.73
5.6.170.0200.15345.31
5.6.160.0130.14045.24
5.6.150.0370.09345.15
5.6.140.0430.08745.23
5.6.130.0170.13045.36
5.6.120.0070.09745.37
5.6.110.0130.09345.29
5.6.100.0230.08045.27
5.6.90.0200.14345.12
5.6.80.0230.12744.54
5.6.70.0170.12344.57
5.6.60.0170.08344.57
5.6.50.0070.09744.68
5.6.40.0170.13044.58
5.6.30.0230.08044.61
5.6.20.0330.12044.48
5.6.10.0330.11744.49
5.6.00.0130.08744.64
5.5.380.0200.14744.54
5.5.370.0070.14044.70
5.5.360.0100.11044.57
5.5.350.0270.13744.61
5.5.340.0170.09044.96
5.5.330.0200.11045.02
5.5.320.0100.13745.07
5.5.310.0270.10745.04
5.5.300.0230.13345.11
5.5.290.0170.11044.99
5.5.280.0200.11044.91
5.5.270.0100.09745.11
5.5.260.0330.07344.95
5.5.250.0370.07744.93
5.5.240.0270.10744.38
5.5.230.0300.13744.34
5.5.220.0100.12344.46
5.5.210.0330.10744.20
5.5.200.0200.14344.27
5.5.190.0300.08344.47
5.5.180.0200.13344.41
5.5.160.0130.08344.40
5.5.150.0370.11044.43
5.5.140.0170.11744.38
5.5.130.0330.07344.44
5.5.120.0170.08744.39
5.5.110.0130.12344.45
5.5.100.0130.14044.26
5.5.90.0330.12344.30
5.5.80.0270.13344.16
5.5.70.0230.12744.32
5.5.60.0300.12344.27
5.5.50.0330.11044.14
5.5.40.0170.09044.16
5.5.30.0170.10744.27
5.5.20.0070.14044.11
5.5.10.0270.11044.22
5.5.00.0170.13344.16
5.4.450.0170.12343.47
5.4.440.0070.12343.55
5.4.430.0100.13343.39
5.4.420.0300.07043.50
5.4.410.0100.09043.50
5.4.400.0270.12343.22
5.4.390.0230.13043.14
5.4.380.0100.10043.08
5.4.370.0130.13743.17
5.4.360.0070.16043.07
5.4.350.0170.14343.36
5.4.340.0200.14043.15
5.4.320.0230.14343.17
5.4.310.0270.11043.14
5.4.300.0130.09043.32
5.4.290.0200.12743.18
5.4.280.0200.13043.13
5.4.270.0230.08343.14
5.4.260.0270.07043.29
5.4.250.0130.10343.13
5.4.240.0200.14343.29
5.4.230.0200.11743.29
5.4.220.0230.12743.18
5.4.210.0230.13043.05
5.4.200.0170.08743.27
5.4.190.0170.09043.21
5.4.180.0230.08343.13
5.4.170.0270.10043.17
5.4.160.0370.12043.17
5.4.150.0200.13343.14
5.4.140.0270.11740.63
5.4.130.0200.12040.46
5.4.120.0300.11040.50
5.4.110.0300.13340.58
5.4.100.0170.08040.44
5.4.90.0200.11340.60
5.4.80.0270.11040.64
5.4.70.0200.10040.50
5.4.60.0230.08040.47
5.4.50.0300.12040.48
5.4.40.0270.13740.67
5.4.30.0170.13340.54
5.4.20.0230.13740.48
5.4.10.0200.14040.67
5.4.00.0230.08039.93
5.3.290.0100.11338.79
5.3.280.0130.13338.71
5.3.270.0270.10038.82
5.3.260.0070.12738.69
5.3.250.0200.09338.70
5.3.240.0100.08738.84
5.3.230.0170.14738.80
5.3.220.0130.13338.68
5.3.210.0170.08038.69
5.3.200.0170.14338.77
5.3.190.0070.09738.64
5.3.180.0170.09038.66
5.3.170.0130.14338.68
5.3.160.0230.09338.67
5.3.150.0200.10338.70
5.3.140.0100.13038.68
5.3.130.0200.08738.73
5.3.120.0130.13738.73
5.3.110.0130.09038.75
5.3.100.0270.12338.25
5.3.90.0200.13338.11
5.3.80.0130.13738.13
5.3.70.0230.11338.02
5.3.60.0230.13738.16
5.3.50.0230.12037.98
5.3.40.0200.13738.01
5.3.30.0230.10038.00
5.3.20.0270.12037.68
5.3.10.0200.12737.71
5.3.00.0070.09337.77
5.2.170.0030.05711.02
5.2.160.0000.06710.95
5.2.150.0030.03710.93
5.2.140.0000.05311.11
5.2.130.0070.03310.96
5.2.120.0170.03310.94
5.2.110.0000.04010.95
5.2.100.0030.03010.95
5.2.90.0000.03711.12
5.2.80.0030.05011.05
5.2.70.0000.06011.13
5.2.60.0070.06311.00
5.2.50.0030.04311.03
5.2.40.0000.04011.04
5.2.30.0100.06010.82
5.2.20.0100.04310.99
5.2.10.0000.05710.80
5.2.00.0130.03010.72
5.1.60.0000.0279.82
5.1.50.0100.0279.87
5.1.40.0000.05010.06
5.1.30.0070.02710.41
5.1.20.0000.03310.25
5.1.10.0000.0509.95
5.1.00.0100.0439.90
5.0.50.0070.0378.38
5.0.40.0030.0238.46
5.0.30.0070.0278.24
5.0.20.0030.0438.29
5.0.10.0030.0438.23
5.0.00.0000.0638.20
4.4.90.0000.0208.13
4.4.80.0030.0178.13
4.4.70.0070.0308.13
4.4.60.0030.0338.13
4.4.50.0000.0278.13
4.4.40.0030.0278.13
4.4.30.0000.0378.13
4.4.20.0000.0178.13
4.4.10.0030.0338.13
4.4.00.0030.0578.13
4.3.110.0000.0208.13
4.3.100.0070.0108.13
4.3.90.0070.0308.13
4.3.80.0000.0338.13
4.3.70.0030.0338.13
4.3.60.0030.0338.13
4.3.50.0070.0338.13
4.3.40.0070.0278.13
4.3.30.0000.0208.13
4.3.20.0000.0178.13
4.3.10.0000.0378.13
4.3.00.0000.0308.13

preferences:
41.71 ms | 400 KiB | 5 Q