3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ "", true, false, null, "\x0", 0, "0", ]; var_export( substr_replace($array, 'prefix_', 0, 0) ); echo "\n---\n"; var_export( preg_replace('/^/', 'prefix_', $array) ); echo "\n===\n"; var_export( preg_replace('/$/', '_suffix', $array) ); echo "\n===\n"; var_export( substr_replace(null, 'prefix_', 0, 0) ); echo "\n---\n"; var_export( preg_replace('/^/', 'prefix_', null) );

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)
8.4.120.0140.00723.86
8.4.110.0100.01020.63
8.4.100.0110.01018.58
8.4.90.0140.00620.77
8.4.80.0060.00318.76
8.4.70.0110.00818.18
8.4.60.0120.00918.09
8.4.50.0050.00618.11
8.4.40.0070.01418.29
8.4.30.0070.01318.91
8.4.20.0100.01020.07
8.4.10.0060.00319.73
8.3.250.0040.00419.02
8.3.240.0130.00617.10
8.3.230.0130.00617.35
8.3.220.0120.00719.05
8.3.210.0080.01118.61
8.3.200.0090.01016.77
8.3.190.0070.00416.66
8.3.180.0100.00718.66
8.3.170.0090.00918.54
8.3.160.0120.00616.91
8.3.150.0160.00316.96
8.3.140.0130.00316.83
8.3.130.0000.00916.70
8.3.120.0090.00020.48
8.3.110.0040.00416.79
8.3.100.0080.00018.85
8.3.90.0040.00426.77
8.3.80.0060.00318.43
8.3.70.0060.01516.75
8.3.60.0150.00018.46
8.3.50.0040.01417.04
8.3.40.0210.00021.80
8.3.30.0130.00719.00
8.3.20.0150.00321.82
8.3.10.0100.01021.89
8.3.00.0130.00619.03
8.2.290.0090.00920.36
8.2.280.0080.00718.52
8.2.270.0070.01117.26
8.2.260.0080.00018.50
8.2.250.0200.00018.63
8.2.240.0030.00616.95
8.2.230.0070.00320.94
8.2.220.0070.00324.06
8.2.210.0080.00026.77
8.2.200.0100.00016.63
8.2.190.0090.01318.91
8.2.180.0110.00716.88
8.2.170.0120.00619.03
8.2.160.0120.00320.07
8.2.150.0170.00319.07
8.2.140.0100.01020.43
8.2.130.0060.00920.57
8.2.120.0070.00719.36
8.2.110.0170.00319.40
8.2.100.0120.00919.09
8.2.90.0210.00019.21
8.2.80.0170.00319.33
8.2.70.0160.00019.03
8.2.60.0140.00719.27
8.2.50.0090.00619.09
8.2.40.0040.01818.82
8.2.30.0190.00318.91
8.2.20.0110.01119.00
8.2.10.0060.01618.90
8.2.00.0130.01018.75
8.1.330.0170.00322.05
8.1.320.0110.00816.57
8.1.310.0000.00818.59
8.1.300.0100.01018.21
8.1.290.0090.00030.84
8.1.280.0060.00925.92
8.1.270.0110.00422.06
8.1.260.0040.01122.13
8.1.250.0090.00622.19
8.1.240.0060.00918.60
8.1.230.0040.01118.61
8.1.220.0040.01818.79
8.1.210.0120.00318.31
8.1.200.0040.01118.71
8.1.190.0070.00718.63
8.1.180.0110.01118.32
8.1.170.0060.00918.64
8.1.160.0070.01518.61
8.1.150.0120.00318.77
8.1.140.0230.00018.75
8.1.130.0120.00318.73
8.1.120.0110.01118.63
8.1.110.0110.00418.65
8.1.100.0090.01519.83
8.1.90.0140.01018.73
8.1.80.0030.01219.89
8.1.70.0070.00718.67
8.1.60.0120.00318.62
8.1.50.0110.00418.69
8.1.40.0110.00418.75
8.1.30.0070.00718.86
8.1.20.0090.00620.00
8.1.10.0090.00918.71
8.1.00.0140.00418.59

preferences:
28.64 ms | 403 KiB | 5 Q