3v4l.org

run code in 300+ PHP versions simultaneously
<?php function is_valid($string) { return preg_match('~(\((?1)*+\)|\[(?1)*+]|{(?1)*+})*\z~A', $string); } $expressions = array(")(){}", "[]({})", "([])", "{()[]}", "([)]", "{()[]}{()[]}{()[]}{()[]}{()[]}"); foreach ($expressions as $expression) { echo "$expression is " , is_valid($expression) , "\n"; }

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)
8.4.130.0110.00918.60
8.4.120.0140.00824.09
8.4.110.0120.00818.86
8.4.100.0120.00917.87
8.4.90.0130.00818.91
8.4.80.0140.00717.95
8.4.70.0100.01118.02
8.4.60.0120.00918.58
8.4.50.0040.00518.69
8.4.40.0160.00319.62
8.4.30.0040.00717.84
8.4.20.0100.01020.57
8.4.10.0070.01419.52
8.3.260.0110.00916.69
8.3.250.0130.00618.86
8.3.240.0080.00917.02
8.3.230.0120.01016.67
8.3.220.0080.00617.04
8.3.210.0100.00916.78
8.3.200.0040.00516.59
8.3.190.0100.00916.63
8.3.180.0040.00318.60
8.3.170.0110.00717.11
8.3.160.0070.01118.36
8.3.150.0080.00017.26
8.3.140.0080.00018.96
8.3.130.0000.00818.45
8.3.120.0030.00620.71
8.3.110.0050.00520.94
8.3.100.0060.00324.06
8.3.90.0040.01126.77
8.3.80.0090.00017.97
8.3.70.0120.00316.75
8.3.60.0100.01018.68
8.3.50.0150.00717.29
8.3.40.0110.00718.93
8.3.30.0080.00818.92
8.3.20.0040.00418.98
8.3.10.0040.00423.66
8.3.00.0000.00720.73
8.2.290.0050.00520.55
8.2.280.0070.00218.29
8.2.270.0160.00317.11
8.2.260.0060.00316.62
8.2.250.0100.01018.61
8.2.240.0070.00317.09
8.2.230.0060.00322.58
8.2.220.0090.00037.54
8.2.210.0080.00026.77
8.2.200.0040.00418.41
8.2.190.0120.00616.90
8.2.180.0170.00318.54
8.2.170.0150.00322.96
8.2.160.0030.01022.24
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00820.96
8.2.110.0060.00321.25
8.2.100.0040.00818.03
8.2.90.0030.00519.76
8.2.80.0080.00020.08
8.2.70.0030.00617.63
8.2.60.0090.00019.72
8.2.50.0080.00017.75
8.2.40.0000.00819.42
8.2.30.0030.00519.35
8.2.20.0040.00417.94
8.2.10.0050.00218.09
8.2.00.0040.00418.02
8.1.330.0110.00821.95
8.1.320.0050.00316.56
8.1.310.0000.01418.51
8.1.300.0060.00320.25
8.1.290.0000.00930.84
8.1.280.0060.01225.92
8.1.270.0040.00423.91
8.1.260.0030.00626.35
8.1.250.0030.00528.09
8.1.240.0000.00822.88
8.1.230.0070.00720.89
8.1.220.0040.00417.74
8.1.210.0110.00018.78
8.1.200.0040.00417.35
8.1.190.0000.00817.36
8.1.180.0040.00418.10
8.1.170.0050.00318.53
8.1.160.0040.00418.92
8.1.150.0000.00718.80
8.1.140.0000.00722.18
8.1.130.0000.01120.11
8.1.120.0080.00017.66
8.1.110.0020.00717.63
8.1.100.0040.00417.61
8.1.90.0070.00017.54
8.1.80.0070.00317.63
8.1.70.0000.00717.57
8.1.60.0060.00317.73
8.1.50.0030.00517.68
8.1.40.0000.00817.68
8.1.30.0000.00817.86
8.1.20.0000.00917.83
8.1.10.0040.00417.71
8.1.00.0050.00317.57
8.0.300.0000.00719.80
8.0.290.0040.00416.88
8.0.280.0040.00418.38
8.0.270.0030.00317.35
8.0.260.0030.00318.48
8.0.250.0000.00817.12
8.0.240.0030.00317.09
8.0.230.0000.00717.16
8.0.220.0040.00417.04
8.0.210.0060.00017.09
8.0.200.0000.00717.09
8.0.190.0080.00017.02
8.0.180.0030.00616.95
8.0.170.0090.00017.11
8.0.160.0040.00417.04
8.0.150.0050.00517.07
8.0.140.0050.00216.94
8.0.130.0000.00613.45
8.0.120.0000.00716.96
8.0.110.0070.00017.06
8.0.100.0000.00716.89
8.0.90.0030.00517.09
8.0.80.0110.00516.99
8.0.70.0040.00416.91
8.0.60.0000.00716.99
8.0.50.0040.00417.02
8.0.30.0130.00617.28
8.0.20.0080.01217.57
8.0.10.0060.00317.14
8.0.00.0130.00716.89
7.4.330.0000.00515.55
7.4.320.0000.00616.69
7.4.300.0040.00416.73
7.4.290.0030.00316.73
7.4.280.0000.00716.74
7.4.270.0000.00716.71
7.4.260.0000.00716.82
7.4.250.0000.00816.70
7.4.240.0060.00316.72
7.4.230.0030.00316.89
7.4.220.0080.00017.00
7.4.210.0060.00916.81
7.4.200.0070.00016.70
7.4.160.0070.00916.69
7.4.140.0120.01017.86
7.4.130.0100.00616.88
7.4.120.0110.00916.73
7.4.110.0070.01016.77
7.4.100.0220.00316.79
7.4.90.0090.01316.70
7.4.80.0090.01219.39
7.4.70.0100.00616.79
7.4.60.0150.00016.57
7.4.50.0090.00616.74
7.4.40.0120.00916.66
7.4.00.0070.01015.11
7.3.330.0000.00513.39
7.3.320.0060.00013.30
7.3.310.0030.00616.30
7.3.300.0030.00316.43
7.3.290.0000.00716.43
7.3.280.0110.00616.37
7.3.260.0080.01116.63
7.3.240.0110.00816.63
7.3.230.0030.01516.53
7.3.210.0150.00316.54
7.3.200.0110.00816.89
7.3.190.0120.01216.48
7.3.180.0060.00916.57
7.3.170.0070.01116.72
7.3.160.0000.01616.75
7.2.330.0090.00916.68
7.2.320.0110.01116.66
7.2.310.0100.00616.84
7.2.300.0060.01216.72
7.2.290.0030.01316.79
7.2.110.0040.01116.70
7.2.100.0030.01216.60
7.2.90.0110.00316.90
7.2.80.0070.00716.38
7.2.70.0070.00717.01
7.2.60.0060.00917.13
7.2.50.0130.00317.06
7.2.40.0030.01616.86
7.2.30.0100.00317.10
7.2.20.0120.00317.15
7.2.10.0090.00317.09
7.2.00.0030.01517.15
7.1.230.0060.00915.75
7.1.220.0060.00915.99
7.1.210.0120.00315.92
7.1.200.0100.00415.91
7.1.190.0030.01015.82
7.1.180.0000.01515.94
7.1.170.0110.00415.57
7.1.160.0030.00916.18
7.1.150.0120.00315.85
7.1.140.0100.00316.07
7.1.130.0050.00816.04
7.1.120.0140.00015.93
7.1.110.0100.00515.84
7.1.100.0000.01515.93
7.1.90.0110.00316.08
7.1.80.0060.00916.08
7.1.70.0150.00015.95
7.1.60.0230.01033.94
7.1.50.0230.01333.80
7.1.40.0270.01033.76
7.1.30.0200.01333.93
7.1.20.0250.00733.75
7.1.10.0110.00415.67
7.1.00.0040.01115.87
5.6.380.0030.01314.29

preferences:
33.95 ms | 403 KiB | 5 Q