3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '\abc'; var_dump(preg_match('/^\\\\a/', $a));

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)
8.3.40.0110.00418.79
8.3.30.0080.00818.67
8.3.20.0080.00020.73
8.3.10.0080.00021.94
8.3.00.0040.00419.69
8.2.170.0120.00322.96
8.2.160.0080.00619.13
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0030.00526.16
8.2.120.0080.00019.64
8.2.110.0080.00319.32
8.2.100.0060.00618.03
8.2.90.0060.00317.75
8.2.80.0040.00418.86
8.2.70.0080.00017.88
8.2.60.0050.00317.93
8.2.50.0030.00518.10
8.2.40.0030.00519.23
8.2.30.0000.01019.30
8.2.20.0050.00217.94
8.2.10.0060.00317.89
8.2.00.0000.00719.40
8.1.270.0100.00021.80
8.1.260.0060.00326.35
8.1.250.0000.00728.09
8.1.240.0080.00022.75
8.1.230.0120.00020.88
8.1.220.0050.00317.74
8.1.210.0000.00918.77
8.1.200.0030.00617.47
8.1.190.0060.00317.35
8.1.180.0040.00418.10
8.1.170.0080.00018.63
8.1.160.0040.00418.91
8.1.150.0050.00318.86
8.1.140.0040.00417.56
8.1.130.0000.00718.90
8.1.120.0080.00017.58
8.1.110.0000.00817.55
8.1.100.0040.00417.49
8.1.90.0000.00817.57
8.1.80.0000.00817.48
8.1.70.0000.00717.48
8.1.60.0000.00917.68
8.1.50.0000.00817.64
8.1.40.0000.00817.54
8.1.30.0040.00417.63
8.1.20.0040.00417.60
8.1.10.0060.00317.57
8.1.00.0030.00517.44
8.0.300.0000.00718.77
8.0.290.0040.00416.88
8.0.280.0070.00018.45
8.0.270.0070.00016.89
8.0.260.0000.00617.27
8.0.250.0000.00716.92
8.0.240.0050.00316.98
8.0.230.0100.00016.93
8.0.220.0050.00316.86
8.0.210.0030.00316.95
8.0.200.0060.00017.05
8.0.190.0070.00016.92
8.0.180.0040.00416.92
8.0.170.0040.00416.95
8.0.160.0000.00817.00
8.0.150.0040.00416.80
8.0.140.0000.00716.98
8.0.130.0030.00313.31
8.0.120.0070.00016.83
8.0.110.0060.00316.98
8.0.100.0040.00416.86
8.0.90.0020.00516.93
8.0.80.0100.01116.93
8.0.70.0040.00416.84
8.0.60.0040.00416.86
8.0.50.0000.00716.82
8.0.30.0110.00717.08
8.0.20.0090.01217.42
8.0.10.0000.00816.97
8.0.00.0120.00716.80
7.4.330.0000.00515.55
7.4.320.0030.00316.70
7.4.300.0060.00016.63
7.4.290.0060.00016.59
7.4.280.0030.00616.74
7.4.270.0030.00616.80
7.4.260.0030.00316.67
7.4.250.0030.00316.55
7.4.240.0030.00316.54
7.4.230.0070.00016.45
7.4.220.0000.00816.85
7.4.210.0050.00916.76
7.4.200.0080.00016.60
7.4.160.0090.00816.63
7.4.140.0110.00817.86
7.4.130.0140.00616.54
7.4.120.0100.01016.63
7.4.110.0060.01216.70
7.4.100.0130.00316.89
7.4.90.0040.01616.87
7.4.80.0080.00819.39
7.4.70.0100.00716.70
7.4.60.0090.00916.41
7.4.50.0120.00616.58
7.4.40.0090.01216.68
7.4.00.0090.00615.13
7.3.330.0050.00013.26
7.3.320.0000.00513.26
7.3.310.0000.00716.34
7.3.300.0030.00316.14
7.3.290.0030.00316.32
7.3.280.0110.00816.25
7.3.260.0130.00716.49
7.3.240.0090.00816.48
7.3.230.0080.01516.59
7.3.210.0100.00616.70
7.3.200.0120.00416.52
7.3.190.0060.01216.57
7.3.180.0080.00816.75
7.3.170.0080.00816.24
7.3.160.0080.00816.70
7.2.330.0110.00716.64
7.2.320.0090.00916.67
7.2.310.0060.01216.50
7.2.300.0100.00716.71
7.2.290.0030.01916.63
7.2.60.0070.00716.94
7.2.40.1610.01017.68
7.2.30.1600.01017.85
7.2.20.1720.00917.80
7.2.10.1790.00917.97
7.2.00.1730.00818.09
7.1.200.0070.00715.98
7.1.160.1800.01316.60
7.1.150.1960.00816.77
7.1.140.1880.00916.72
7.1.130.1780.00816.77
7.1.120.2180.00916.63
7.1.110.1680.00716.09
7.1.100.1720.00816.21
7.1.90.1730.00816.28
7.1.80.2480.01116.02
7.1.70.1720.00715.09
7.1.60.1810.01333.25
7.1.50.1780.01532.96
7.1.40.1720.01232.75
7.1.30.1860.00832.80
7.1.20.1810.00732.91
7.1.10.1700.00914.84
7.1.00.1420.00815.11

preferences:
55.42 ms | 400 KiB | 5 Q