3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('pcre.backtrack_limit', 100); for ($len = 1000; $len <= 1001; $len++) { $x = str_repeat("x", $len); $ret = preg_match("/x+x+y/", $x); echo "len = " . $len . "\n"; echo "preg_match = " . $ret . "\n"; echo "PREG_BACKTRACK_LIMIT_ERROR = " . PREG_BACKTRACK_LIMIT_ERROR . "\n"; echo "preg_last_error = " . preg_last_error() . "\n"; echo "\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)
8.4.140.0150.00617.51
8.4.130.0100.01017.97
8.4.120.0140.00624.07
8.4.110.0110.01122.25
8.4.100.0130.00918.84
8.4.90.0120.00718.95
8.4.80.0120.01018.01
8.4.70.0080.00618.05
8.4.60.0050.00419.12
8.4.50.0050.00618.71
8.4.40.0090.01219.78
8.4.30.0100.01317.79
8.4.20.0070.01319.66
8.4.10.0000.01019.58
8.3.270.0130.00616.70
8.3.260.0130.00616.79
8.3.250.0040.00419.04
8.3.240.0120.00717.22
8.3.230.0140.00616.75
8.3.220.0060.00218.86
8.3.210.0100.00916.73
8.3.200.0070.00216.72
8.3.190.0110.00816.92
8.3.180.0120.00416.71
8.3.170.0110.01118.73
8.3.160.0050.00318.53
8.3.150.0030.00616.61
8.3.140.0030.00518.92
8.3.130.0060.00318.71
8.3.120.0210.00817.42
8.3.110.0090.00018.43
8.3.100.0110.00520.36
8.3.90.0120.00626.77
8.3.80.0000.00919.36
8.3.70.0090.01216.63
8.3.60.0090.00916.50
8.3.50.0140.00722.05
8.3.40.0040.01118.91
8.3.30.0080.00818.83
8.3.20.0120.00318.80
8.3.10.0000.00721.90
8.3.00.0040.00421.96
8.2.290.0150.00320.34
8.2.280.0080.00716.72
8.2.270.0110.01122.07
8.2.260.0040.00416.49
8.2.250.0080.00016.55
8.2.240.0090.00017.45
8.2.230.0040.00420.94
8.2.220.0090.00037.54
8.2.210.0070.01126.77
8.2.200.0040.00418.88
8.2.190.0180.00016.88
8.2.180.0140.00716.88
8.2.170.0070.00722.96
8.2.160.0030.01022.31
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0060.00321.04
8.2.110.0040.00421.13
8.2.100.0200.00219.14
8.2.90.0150.00417.86
8.2.80.0150.00417.87
8.2.70.0100.00358.80
8.2.60.0140.00417.92
8.2.50.0140.00517.89
8.2.40.0160.00219.10
8.2.30.0070.00618.30
8.2.20.0160.00517.89
8.2.10.0110.00617.89
8.2.00.0160.00117.73
8.1.330.0110.00822.24
8.1.320.0090.00616.62
8.1.310.0040.00418.66
8.1.300.0150.00018.41
8.1.290.0040.00430.84
8.1.280.0090.00925.92
8.1.270.0080.00023.73
8.1.260.0050.00326.35
8.1.250.0090.00028.09
8.1.240.0000.00919.38
8.1.230.0100.00619.76
8.1.220.0150.00517.71
8.1.210.0140.00318.23
8.1.200.0130.00517.58
8.1.190.0140.00517.52
8.1.180.0110.00617.89
8.1.170.0140.00318.12
8.1.160.0130.00319.87
8.1.150.0110.00619.02
8.1.140.0130.00418.65
8.1.130.0140.00417.59
8.1.120.0080.00917.62
8.1.110.0170.00017.63
8.1.100.0090.00917.58
8.1.90.0080.00617.65
8.1.80.0110.00617.63
8.1.70.0100.00617.65
8.1.60.0100.00517.72
8.1.50.0150.00417.63
8.1.40.0120.00417.65
8.1.30.0150.00517.74
8.1.20.0150.00517.73
8.1.10.0140.00517.62
8.1.00.0150.00517.58
8.0.300.0080.01018.74
8.0.290.0140.00417.22
8.0.280.0130.00418.10
8.0.270.0140.00417.36
8.0.260.0150.00317.27
8.0.250.0110.00917.41
8.0.240.0130.00517.37
8.0.230.0160.00417.48
8.0.220.0080.00517.19
8.0.210.0150.00217.13
8.0.200.0110.00717.18
8.0.190.0150.00217.18
8.0.180.0160.00317.13
8.0.170.0120.00417.09
8.0.160.0130.00617.11
8.0.150.0130.00517.10
8.0.140.0140.00517.13
8.0.130.0140.00516.39
8.0.120.0120.00817.15
8.0.110.0100.00517.10
8.0.100.0080.00817.10
8.0.90.0140.00317.10
8.0.80.0130.00517.10
8.0.70.0110.00617.09
8.0.60.0110.00417.08
8.0.50.0120.00417.00
8.0.30.0110.00717.05
8.0.20.0110.00617.23
8.0.10.0100.00617.16
8.0.00.0090.00517.10
7.4.330.0140.00016.62
7.4.320.0120.00417.23
7.4.300.0050.00816.80
7.4.290.0100.00616.92
7.4.280.0110.00316.79
7.4.270.0120.00616.88
7.4.260.0140.00416.84
7.4.250.0140.00416.89
7.4.240.0100.00616.80
7.4.230.0110.00416.86
7.4.220.0100.00716.80
7.4.210.0090.00516.87
7.4.200.0100.00416.84
7.4.190.0120.00516.96
7.4.180.0120.00516.96
7.4.160.0090.00716.84
7.4.150.0080.00716.95
7.4.140.0110.00717.13
7.4.130.0120.00616.69
7.4.120.0100.00716.74
7.4.110.0110.00516.71
7.4.100.0110.00616.79
7.4.90.0100.00716.74
7.4.80.0100.00717.03
7.4.70.0090.00716.76
7.4.60.0130.00516.71
7.4.50.0110.00516.69
7.4.40.0110.00616.62
7.4.30.0100.00716.74
7.4.20.0130.00416.69
7.4.10.0090.00716.65
7.4.00.0110.00516.54
7.3.330.0130.00416.05
7.3.320.0130.00316.01
7.3.310.0110.00416.68
7.3.300.0090.00716.64
7.3.290.0110.00516.50
7.3.280.0100.00716.55
7.3.270.0130.00516.78
7.3.260.0100.00716.61
7.3.250.0120.00716.60
7.3.240.0110.00616.57
7.3.230.0100.00716.57
7.3.220.0130.00616.53
7.3.210.0110.00816.49
7.3.200.0110.00716.48
7.3.190.0110.00816.60
7.3.180.0110.00716.57
7.3.170.0130.00516.53
7.3.160.0120.00616.59
7.3.150.0130.00416.54
7.3.140.0130.00416.53
7.3.130.0100.00616.56
7.3.120.0110.00716.52
7.3.110.0130.00416.48
7.3.100.0100.00716.49
7.3.90.0100.00716.52
7.3.80.0100.00616.43
7.3.70.0100.00716.47
7.3.60.0100.00716.49
7.3.50.0120.00616.48
7.3.40.0100.00716.26
7.3.30.0100.00616.21
7.3.20.0120.00517.30
7.3.10.0120.00617.19
7.3.00.0150.00517.18
7.2.340.0140.00416.76
7.2.330.0140.00616.78
7.2.320.0100.00916.72
7.2.310.0120.00716.82
7.2.300.0120.00816.76
7.2.290.0140.00616.78
7.2.280.0120.00816.77
7.2.270.0110.00716.76
7.2.260.0150.00416.79
7.2.250.0110.00816.75
7.2.240.0120.00717.95
7.2.230.0130.00716.78
7.2.220.0120.00616.59
7.2.210.0120.00616.50
7.2.200.0160.00316.63
7.2.190.0130.00516.58
7.2.180.0120.00716.60
7.2.170.0120.00716.42
7.2.160.0120.00516.38
7.2.150.0120.00717.46
7.2.140.0150.00517.54
7.2.130.0130.00717.53
7.2.120.0110.00817.49
7.2.110.0150.00917.05
7.2.100.0130.00617.08
7.2.90.0140.00617.12
7.2.80.0110.00817.12
7.2.70.0210.00716.83
7.2.60.0240.00616.81
7.2.50.0190.00816.88
7.2.40.0210.00716.79
7.2.30.0190.00916.86
7.2.20.0200.00817.11
7.2.10.0270.00917.03
7.2.00.0180.00917.07
7.1.330.0130.00617.08
7.1.320.0120.00516.71
7.1.310.0120.00616.81
7.1.300.0120.00716.68
7.1.290.0140.00416.68
7.1.280.0100.00716.41
7.1.270.0110.00616.44
7.1.260.0110.00616.47
7.1.250.0110.00816.35
7.1.240.0130.00516.33
7.1.230.0160.00716.05
7.1.220.0160.00516.03
7.1.210.0120.00515.99
7.1.200.0130.00715.95
7.1.190.0160.00815.90
7.1.180.0120.00815.94
7.1.170.0200.00615.66
7.1.160.0220.00615.69
7.1.150.0180.00515.73
7.1.140.0170.00715.88
7.1.130.0160.00715.93
7.1.120.0160.00815.95
7.1.110.0230.00515.96
7.1.100.0170.00715.95
7.1.90.0200.00815.91
7.1.80.0180.00715.95
7.1.70.0180.00815.85
7.1.60.0240.00821.57
7.1.50.0250.01021.51
7.1.40.0230.00921.47
7.1.30.0240.00921.47
7.1.20.0260.00721.58
7.1.10.0180.00615.87
7.1.00.0130.00715.80
7.0.330.0130.00516.11
7.0.320.0150.00716.09
7.0.310.0160.00615.73
7.0.300.0200.00715.48
7.0.290.0180.00715.44
7.0.280.0160.00515.71
7.0.270.0250.00715.73
7.0.260.0210.00615.72
7.0.250.0190.00715.73
7.0.240.0230.00715.66
7.0.230.0180.00915.60
7.0.220.0220.00515.65
7.0.210.0200.00715.57
7.0.200.0180.00715.60
7.0.190.0200.00815.54
7.0.180.0200.00615.54
7.0.170.0210.00715.58
7.0.160.0310.00815.52
7.0.150.0160.00715.50
7.0.140.0200.00715.50
7.0.130.0140.00815.61
7.0.120.0310.00615.53
7.0.110.0190.00715.52
7.0.100.0200.00715.51
7.0.90.0240.00615.56
7.0.80.0180.00715.51
7.0.70.0170.00615.51
7.0.60.0190.00615.54
7.0.50.0160.00715.50
7.0.40.0190.00715.48
7.0.30.0180.00615.34
7.0.20.0200.00715.33
7.0.10.0200.00715.32
7.0.00.0170.00615.25
5.6.400.0130.00615.78
5.6.390.0110.00815.78
5.6.380.0130.00715.43
5.6.370.0140.00615.42
5.6.360.0130.00615.44
5.6.350.0130.00615.46
5.6.340.0110.00715.44
5.6.330.0110.01015.46
5.6.320.0120.00815.48
5.6.310.0100.01015.44
5.6.300.0150.01015.59
5.6.290.0140.01115.61
5.6.280.0140.01015.61
5.6.270.0140.01115.70
5.6.260.0130.01115.65
5.6.250.0120.01115.63
5.6.240.0120.01215.66
5.6.230.0130.01215.69
5.6.220.0120.01115.69
5.6.210.0150.01015.63
5.6.200.0120.01315.72
5.6.190.0130.01215.72
5.6.180.0130.01215.70
5.6.170.0140.01015.68
5.6.160.0130.01115.66
5.6.150.0120.01215.74
5.6.140.0130.01215.67
5.6.130.0140.01015.70
5.6.120.0140.01215.70
5.6.110.0140.01115.64
5.6.100.0130.01115.65
5.6.90.0160.01015.56
5.6.80.0130.01215.56
5.6.70.0130.01115.62
5.6.60.0120.01115.54
5.6.50.0120.01115.46
5.6.40.0140.01115.56
5.6.30.0140.01115.57
5.6.20.0130.01115.51
5.6.10.0130.01115.55
5.6.00.0130.01115.57

preferences:
113.1 ms | 403 KiB | 5 Q