3v4l.org

run code in 300+ PHP versions simultaneously
<?php $count = 2000; $string = str_repeat("a", $count); var_dump(preg_match('/\A( [\x09\x0A\x0D\x20-\x7E] | [\xC2-\xDF][\x80-\xBF] | \xE0[\xA0-\xBF][\x80-\xBF] | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} | \xED[\x80-\x9F][\x80-\xBF] | \xF0[\x90-\xBF][\x80-\xBF]{2} | [\xF1-\xF3][\x80-\xBF]{3} | \xF4[\x80-\x8F][\x80-\xBF]{2} )*\z/x', $string)); ?>

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)
8.3.60.0130.00916.63
8.3.50.0070.01216.68
8.3.40.0080.00819.02
8.3.30.0110.00418.76
8.3.20.0030.00618.77
8.3.10.0040.00420.46
8.3.00.0060.00319.50
8.2.180.0160.00316.63
8.2.170.0140.00322.96
8.2.160.0110.00321.19
8.2.150.0040.00424.18
8.2.140.0050.00224.66
8.2.130.0040.00426.16
8.2.120.0040.00419.75
8.2.110.0000.01021.09
8.2.100.0040.00718.03
8.2.90.0090.00019.34
8.2.80.0040.00418.04
8.2.70.0040.00417.88
8.2.60.0000.00818.04
8.2.50.0000.00818.07
8.2.40.0060.00318.22
8.2.30.0030.00618.14
8.2.20.0040.00417.78
8.2.10.0000.00917.80
8.2.00.0050.00317.85
8.1.280.0090.00625.92
8.1.270.0050.00324.66
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0090.00020.79
8.1.230.0070.00420.98
8.1.220.0000.00817.77
8.1.210.0050.00318.95
8.1.200.0060.00617.60
8.1.190.0000.00717.54
8.1.180.0070.00318.10
8.1.170.0040.00420.52
8.1.160.0070.00018.93
8.1.150.0030.00518.78
8.1.140.0030.00817.67
8.1.130.0050.00217.87
8.1.120.0050.00317.51
8.1.110.0040.00417.56
8.1.100.0040.00417.59
8.1.90.0000.00717.62
8.1.80.0040.00317.64
8.1.70.0030.00317.52
8.1.60.0080.00017.72
8.1.50.0060.00317.65
8.1.40.0060.00317.56
8.1.30.0040.00417.73
8.1.20.0050.00517.83
8.1.10.0000.00817.64
8.1.00.0000.00817.45
8.0.300.0070.00320.11
8.0.290.0040.00417.00
8.0.280.0030.00318.34
8.0.270.0000.00817.28
8.0.260.0040.00416.90
8.0.250.0080.00017.10
8.0.240.0030.00317.13
8.0.230.0030.00317.06
8.0.220.0050.00316.99
8.0.210.0030.00316.94
8.0.200.0030.00317.07
8.0.190.0090.00017.05
8.0.180.0000.00716.97
8.0.170.0030.00617.00
8.0.160.0040.00417.16
8.0.150.0000.00817.05
8.0.140.0040.00817.05
8.0.130.0000.00513.46
8.0.120.0040.00417.01
8.0.110.0030.00517.10
8.0.100.0040.00417.09
8.0.90.0040.00417.07
8.0.80.0070.00717.04
8.0.70.0040.00417.02
8.0.60.0040.00416.99
8.0.50.0030.00517.06
8.0.30.0100.00717.17
8.0.20.0130.00917.30
8.0.10.0050.00316.95
8.0.00.0120.00916.97
7.4.330.0020.00213.20
7.4.320.0040.00416.79
7.4.300.0020.00516.82
7.4.290.0000.00716.83
7.4.280.0050.00316.67
7.4.270.0070.00016.67
7.4.260.0060.00013.43
7.4.250.0080.00016.69
7.4.240.0050.00216.71
7.4.230.0000.00716.81
7.4.220.0180.00316.80
7.4.210.0060.00916.80
7.4.200.0000.00816.69
7.4.190.0070.00016.69
7.4.160.0100.00616.60
7.4.150.0030.01416.85
7.4.140.0140.00316.61
7.4.130.0080.00916.77
7.4.120.0070.01016.79
7.4.110.0130.01016.56
7.4.100.0070.01016.83
7.4.90.0100.00716.50
7.4.80.0130.00316.94
7.4.70.0090.00816.46
7.4.60.0090.00916.62
7.4.50.0060.00316.55
7.4.40.0080.00816.56
7.4.30.0060.00916.59
7.4.00.0000.01415.22
7.3.330.0050.00213.25
7.3.320.0030.00313.11
7.3.310.0030.00316.38
7.3.300.0000.00716.27
7.3.290.0090.00616.41
7.3.280.0090.00816.36
7.3.270.0040.01316.40
7.3.260.0110.00816.34
7.3.250.0130.00416.34
7.3.240.0030.01616.36
7.3.230.0100.01316.81
7.3.210.0090.01116.55
7.3.200.0140.00419.39
7.3.190.0170.00016.62
7.3.180.0070.01016.36
7.3.170.0080.00816.51
7.3.160.0130.00316.61
7.3.120.0100.00314.92
7.2.330.0130.01016.81
7.2.320.0120.00916.75
7.2.310.0120.00916.81
7.2.300.0130.00416.86
7.2.290.0060.01016.72
7.2.60.0040.01216.96
7.2.00.0040.01119.68
7.1.200.0000.01315.74
7.1.100.0060.00618.08
7.1.70.0050.00317.32
7.1.60.0110.01519.40
7.1.50.0030.01716.98
7.1.00.0000.06722.65
7.0.200.0000.00816.64
7.0.140.0070.07322.20
7.0.120.0030.07322.01
7.0.60.0070.07020.01
7.0.50.0100.07717.86
7.0.40.0030.04720.41
7.0.30.0270.04020.08
7.0.20.0270.06320.17
7.0.10.0170.07320.08
7.0.00.0100.08320.21
5.6.280.0100.06722.95
5.6.210.0170.07722.38
5.6.200.0100.03320.14
5.6.190.0070.04722.52
5.6.180.0130.04322.52
5.6.170.0200.08322.43
5.6.160.0200.07022.41
5.6.150.0030.04020.09
5.6.140.0000.04320.06
5.6.130.0070.03720.05
5.6.120.0000.04722.93
5.6.110.0100.07022.88
5.6.100.0170.05022.85
5.6.90.0030.04322.94
5.6.80.0100.08022.30
5.5.350.0330.06722.25
5.5.340.0030.08019.86
5.5.330.0200.06722.15
5.5.320.0370.08022.36
5.5.310.0170.05322.27
5.5.300.0070.04719.96
5.5.290.0030.04319.95
5.5.280.0170.07322.79
5.5.270.0170.08022.80
5.5.260.0130.07322.84
5.5.250.0030.04722.52
5.5.240.0030.06722.18
5.4.450.0830.04721.22
5.4.440.0630.05021.08
5.4.430.0370.04021.36
5.4.420.0630.04321.27
5.4.410.0830.04321.08
5.4.400.0500.03721.08
5.4.390.0770.03720.95
5.4.380.0330.04020.62
5.4.370.0670.03320.88
5.4.360.0500.05020.76
5.4.350.0600.03021.04
5.4.340.0470.03320.59
5.4.320.0930.03321.04
5.4.310.0530.04320.89
5.4.300.0630.03320.91
5.4.290.0730.03020.86
5.4.280.0330.06321.07
5.4.270.0300.03720.88
5.4.260.0730.04020.75
5.4.250.0670.07020.70
5.4.240.0700.04320.90
5.4.230.0370.05320.95
5.4.220.0300.04320.95
5.4.210.0770.04720.86
5.4.200.0630.02720.88
5.4.190.0330.04320.85
5.4.180.0230.04721.03
5.4.170.0430.03320.91
5.4.160.0570.04020.88
5.4.150.0570.04020.69
5.4.140.0400.04318.29
5.4.130.0330.05018.11
5.4.120.0370.04718.14
5.4.110.0330.04717.94
5.4.100.0770.03718.03
5.4.90.0700.02717.99
5.4.80.0970.02317.86
5.4.70.0800.03318.10
5.4.60.0600.03717.89
5.4.50.0530.04718.00
5.4.40.0400.03317.89
5.4.30.0730.02318.04
5.4.20.0600.03318.02
5.4.10.0730.03318.05
5.4.00.0870.03317.48
5.3.290.0730.04016.33
5.3.280.0470.03716.30
5.3.270.0300.04716.21
5.3.260.1000.03316.38
5.3.250.0730.03716.38
5.3.240.0230.04316.25
5.3.230.0230.04016.31
5.3.220.0370.04717.47
5.3.210.0830.02717.34
5.3.200.0570.04017.54
5.3.190.0770.03717.33
5.3.180.0600.04017.57
5.3.170.0730.03717.70
5.3.160.0570.02717.51
5.3.150.0630.03317.66
5.3.140.0500.04017.45
5.3.130.0500.04717.54
5.3.120.1170.03717.54
5.3.110.0730.03317.47
5.3.100.0730.03316.98
5.3.90.0700.03016.25
5.3.80.1000.03016.21
5.3.70.0800.03316.22
5.3.60.0370.03716.02
5.3.50.0870.04016.21
5.3.40.0730.03716.01
5.3.30.0770.03016.01
5.3.20.0630.04016.01
5.3.10.0530.03716.01
5.3.00.0630.03316.01
5.2.170.0530.02716.01
5.2.160.0600.03716.01
5.2.150.0700.05316.01
5.2.140.0600.03016.01
5.2.130.0230.03016.01
5.2.120.0670.03016.01
5.2.110.0530.03016.01
5.2.100.0170.02716.01
5.2.90.0730.03016.01
5.2.80.0700.02316.01
5.2.70.0470.03016.01
5.2.60.0530.03016.01
5.2.50.0270.02716.01
5.2.40.0270.03316.01
5.2.30.0100.03716.01
5.2.20.0470.03016.01
5.2.10.0400.03016.01
5.2.00.0570.04016.01
5.1.60.0630.02316.01
5.1.50.0670.02716.01
5.1.40.0470.02316.01
5.1.30.0430.02716.01
5.1.20.0100.03016.01
5.1.10.0270.03016.01
5.1.00.0000.03016.01
5.0.50.0300.01716.01
5.0.40.0230.01716.01
5.0.30.0130.02716.01
5.0.20.0100.02316.01
5.0.10.0170.02716.01
5.0.00.0200.02316.01
4.4.90.0270.02016.01
4.4.80.0300.01316.01
4.4.70.0170.01316.01
4.4.60.0230.01316.01
4.4.50.0330.00716.01
4.4.40.0370.02316.01
4.4.30.0070.01316.01
4.4.20.0130.02016.01
4.4.10.0030.01016.01
4.4.00.0100.03016.01
4.3.110.0230.01316.01
4.3.100.0070.01716.01
4.3.90.0270.01016.01
4.3.80.0200.02016.01
4.3.70.0200.02016.01
4.3.60.0130.01316.01
4.3.50.0130.01716.01
4.3.40.0200.02016.01
4.3.30.0200.01316.01
4.3.20.0170.01016.01
4.3.10.0100.00716.01
4.3.00.0170.01016.01

preferences:
31.13 ms | 401 KiB | 5 Q