3v4l.org

run code in 300+ PHP versions simultaneously
<?php $examples = array( 'Valid ASCII' => "a", 'Valid 2 Octet Sequence' => "\xc3\xb1", 'Invalid 2 Octet Sequence' => "\xc3\x28", 'Invalid Sequence Identifier' => "\xa0\xa1", 'Valid 3 Octet Sequence' => "\xe2\x82\xa1", 'Invalid 3 Octet Sequence (in 2nd Octet)' => "\xe2\x28\xa1", 'Invalid 3 Octet Sequence (in 3rd Octet)' => "\xe2\x82\x28", 'Valid 4 Octet Sequence' => "\xf0\x90\x8c\xbc", 'Invalid 4 Octet Sequence (in 2nd Octet)' => "\xf0\x28\x8c\xbc", 'Invalid 4 Octet Sequence (in 3rd Octet)' => "\xf0\x90\x28\xbc", 'Invalid 4 Octet Sequence (in 4th Octet)' => "\xf0\x28\x8c\x28", 'Valid 5 Octet Sequence (but not Unicode!)' => "\xf8\xa1\xa1\xa1\xa1", 'Valid 6 Octet Sequence (but not Unicode!)' => "\xfc\xa1\xa1\xa1\xa1\xa1", ); foreach ($examples as $k => $v) { echo $k . PHP_EOL; echo var_dump((bool)preg_match('//u', $v)); }

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)
8.3.40.0090.00618.78
8.3.30.0150.00418.98
8.3.20.0030.00518.92
8.3.10.0040.00420.61
8.3.00.0040.00423.48
8.2.170.0170.00322.96
8.2.160.0110.00420.60
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0030.00519.61
8.2.110.0060.00320.45
8.2.100.0040.00817.72
8.2.90.0040.00419.22
8.2.80.0040.00418.03
8.2.70.0030.00517.63
8.2.60.0080.00018.04
8.2.50.0050.00318.07
8.2.40.0060.00318.22
8.2.30.0080.00019.88
8.2.20.0040.00417.77
8.2.10.0050.00217.96
8.2.00.0040.00417.95
8.1.270.0000.00723.99
8.1.260.0060.01226.35
8.1.250.0030.00628.09
8.1.240.0090.00022.48
8.1.230.0060.00620.96
8.1.220.0040.00418.77
8.1.210.0000.00818.97
8.1.200.0030.00617.48
8.1.190.0030.00517.39
8.1.180.0030.00618.10
8.1.170.0000.00818.78
8.1.160.0030.00518.93
8.1.150.0070.00018.72
8.1.140.0080.00017.66
8.1.130.0000.00717.85
8.1.120.0040.00417.46
8.1.110.0040.00417.70
8.1.100.0070.00017.61
8.1.90.0050.00217.61
8.1.80.0030.00617.59
8.1.70.0040.00417.59
8.1.60.0030.00517.63
8.1.50.0040.00417.59
8.1.40.0000.00817.56
8.1.30.0000.00717.76
8.1.20.0000.00817.75
8.1.10.0090.00017.56
8.1.00.0030.00517.61
8.0.300.0090.00019.89
8.0.290.0000.00717.18
8.0.280.0000.00718.52
8.0.270.0030.00317.20
8.0.260.0030.00317.03
8.0.250.0070.00017.11
8.0.240.0070.00417.20
8.0.230.0070.00017.10
8.0.220.0000.00717.14
8.0.210.0040.00416.99
8.0.200.0000.00817.18
8.0.190.0050.00217.14
8.0.180.0000.00717.17
8.0.170.0030.00517.11
8.0.160.0050.00217.19
8.0.150.0000.00817.06
8.0.140.0070.00417.08
8.0.130.0030.00313.58
8.0.120.0080.00016.96
8.0.110.0030.00617.09
8.0.100.0000.00717.00
8.0.90.0050.00317.05
8.0.80.0090.00917.11
8.0.70.0020.00517.07
8.0.60.0050.00316.98
8.0.50.0030.00617.09
8.0.30.0080.01117.44
8.0.20.0100.01117.40
8.0.10.0000.00717.12
8.0.00.0080.01416.95
7.4.330.0030.00314.90
7.4.320.0000.00816.71
7.4.300.0060.00016.71
7.4.290.0000.00716.87
7.4.280.0030.00516.72
7.4.270.0060.00016.71
7.4.260.0070.00013.48
7.4.250.0040.00416.79
7.4.240.0000.00716.84
7.4.230.0050.00316.85
7.4.220.0100.00716.89
7.4.210.0060.01016.81
7.4.200.0030.00416.86
7.4.190.0040.00416.92
7.4.160.0120.00316.67
7.4.150.0140.00317.40
7.4.140.0100.00817.86
7.4.130.0090.00916.76
7.4.120.0120.00516.66
7.4.110.0090.00916.53
7.4.100.0120.01216.83
7.4.90.0100.00716.64
7.4.80.0130.00719.39
7.4.70.0120.01216.72
7.4.60.0070.01016.64
7.4.50.0000.00416.73
7.4.40.0080.00622.27
7.4.30.0090.00916.63
7.4.00.0030.01414.93
7.3.330.0050.00013.36
7.3.320.0000.00513.24
7.3.310.0000.00716.56
7.3.300.0000.00716.48
7.3.290.0090.00516.47
7.3.280.0070.01116.46
7.3.270.0120.00617.40
7.3.260.0080.01018.24
7.3.250.0050.01216.79
7.3.240.0110.00716.51
7.3.230.0090.00816.79
7.3.210.0110.01116.70
7.3.200.0060.01216.52
7.3.190.0160.00316.52
7.3.180.0130.00316.46
7.3.170.0070.01016.71
7.3.160.0080.00716.53
7.3.120.0030.01414.92
7.2.330.0060.01316.68
7.2.320.0060.01016.70
7.2.310.0090.01216.70
7.2.300.0090.00616.67
7.2.290.0070.01416.86
7.2.00.0060.00619.66
7.1.100.0040.01418.53
7.1.70.0030.00517.34
7.1.60.0060.01919.40
7.1.50.0090.01216.98
7.1.00.0070.07322.34
7.0.200.0140.01414.88
7.0.140.0070.06721.95
7.0.60.0100.04719.93
7.0.50.0070.05017.88
7.0.40.0070.06717.71
7.0.30.0070.06017.79
7.0.20.0130.07317.80
7.0.10.0100.05017.71
7.0.00.0070.04717.69
5.6.280.0000.07721.10
5.6.210.0170.07020.68
5.6.200.0070.08718.13
5.6.190.0100.08018.16
5.6.180.0100.07718.18
5.6.170.0030.08318.05
5.6.160.0100.06018.22
5.6.150.0170.07318.13
5.6.140.0030.08318.07
5.6.130.0070.09018.18
5.6.120.0070.06718.21
5.6.110.0130.08018.23
5.6.100.0100.03718.19
5.6.90.0000.04718.19
5.6.80.0100.04717.59
5.6.70.0070.03717.50
5.6.60.0030.06717.59
5.6.50.0030.04017.48
5.6.40.0070.07717.50
5.6.30.0130.05317.44
5.6.20.0070.05017.45
5.6.10.0000.08317.50
5.6.00.0000.05317.50
5.5.350.0300.06720.41
5.5.340.0130.07717.95
5.5.330.0130.07317.97
5.5.320.0070.06718.00
5.5.310.0070.06717.95
5.5.300.0100.04717.98
5.5.290.0100.04717.95
5.5.280.0130.04718.00
5.5.270.0170.07317.98
5.5.260.0130.04717.95
5.5.250.0030.04317.74
5.5.240.0070.03717.35
5.5.230.0100.07717.25
5.5.220.0130.04017.28
5.5.210.0130.06717.37
5.5.200.0130.08017.37
5.5.190.0030.08717.22
5.5.180.0170.03017.37
5.5.160.0130.07017.34
5.5.150.0000.05717.23
5.5.140.0030.04017.31
5.5.130.0030.04717.37
5.5.120.0070.04017.36
5.5.110.0070.07717.35
5.5.100.0030.07017.14
5.5.90.0100.07017.23
5.5.80.0130.07017.16
5.5.70.0030.07717.15
5.5.60.0130.05717.23
5.5.50.0030.08017.16
5.5.40.0130.05017.26
5.5.30.0130.07017.21
5.5.20.0100.07317.22
5.5.10.0130.06717.15
5.5.00.0030.05017.27
5.4.450.0070.08019.40
5.4.440.0070.07719.42
5.4.430.0070.05019.35
5.4.420.0170.03319.31
5.4.410.0100.05319.16
5.4.400.0100.04019.02
5.4.390.0030.04019.01
5.4.380.0100.05719.04
5.4.370.0070.03718.89
5.4.360.0130.07019.12
5.4.350.0100.04719.14
5.4.340.0170.06718.89
5.4.320.0070.07719.10
5.4.310.0170.06319.13
5.4.300.0100.07719.09
5.4.290.0030.06019.05
5.4.280.0100.03318.98
5.4.270.0100.03718.90
5.4.260.0000.05319.12
5.4.250.0100.04319.01
5.4.240.0100.04019.06
5.4.230.0130.03018.96
5.4.220.0170.03319.08
5.4.210.0000.04318.81
5.4.200.0130.06018.98
5.4.190.0100.07718.97
5.4.180.0100.04019.08
5.4.170.0100.05718.88
5.4.160.0070.04018.95
5.4.150.0030.08719.05
5.4.140.0070.07716.24
5.4.130.0130.02716.32
5.4.120.0070.07716.47
5.4.110.0070.06716.25
5.4.100.0100.07716.29
5.4.90.0030.04016.29
5.4.80.0070.07016.31
5.4.70.0100.04016.28
5.4.60.0100.07016.50
5.4.50.0000.07716.15
5.4.40.0130.03016.32
5.4.30.0030.07016.50
5.4.20.0030.06716.26
5.4.10.0030.08016.25
5.4.00.0070.07315.70
5.3.290.0070.06714.62
5.3.280.0100.07714.42
5.3.270.0070.07714.69
5.3.260.0070.07014.57
5.3.250.0030.05014.54
5.3.240.0100.06314.57
5.3.230.0000.04314.67
5.3.220.0000.08314.35
5.3.210.0030.08314.53
5.3.200.0100.06714.56
5.3.190.0070.04014.53
5.3.180.0070.06314.50
5.3.170.0030.04014.52
5.3.160.0030.06014.50
5.3.150.0100.05314.53
5.3.140.0030.07014.53
5.3.130.0100.05714.52
5.3.120.0130.07314.51
5.3.110.0100.07014.50
5.3.100.0100.06014.01
5.3.90.0000.05013.95
5.3.80.0200.06313.97
5.3.70.0070.05014.09
5.3.60.0130.07013.85
5.3.50.0070.06313.91
5.3.40.0100.06013.86
5.3.30.0030.05313.68
5.3.20.0170.06713.47
5.3.10.0100.04013.62
5.3.00.0100.03713.58
5.2.170.0070.06010.93
5.2.160.0070.04311.29
5.2.150.0130.05710.92
5.2.140.0030.06311.13
5.2.130.0130.03710.94
5.2.120.0030.05011.13
5.2.110.0100.05311.08
5.2.100.0030.04711.07
5.2.90.0070.06011.10
5.2.80.0070.05010.91
5.2.70.0100.04011.09
5.2.60.0000.04311.05
5.2.50.0130.03711.18
5.2.40.0070.05710.84
5.2.30.0070.04010.96
5.2.20.0000.06010.84
5.2.10.0130.03310.84
5.2.00.0070.04710.64
5.1.60.0030.05710.00
5.1.50.0030.0539.95
5.1.40.0070.0509.91
5.1.30.0030.06010.25
5.1.20.0000.04710.39
5.1.10.0070.05310.05
5.1.00.0030.0609.98
5.0.50.0070.0338.57
5.0.40.0070.0338.37
5.0.30.0070.0608.20
5.0.20.0030.0478.26
5.0.10.0030.0238.20
5.0.00.0030.0408.12
4.4.90.0000.0277.86
4.4.80.0030.0377.86
4.4.70.0070.0307.86
4.4.60.0000.0377.86
4.4.50.0030.0237.86
4.4.40.0100.0177.86
4.4.30.0030.0377.86
4.4.20.0030.0337.86
4.4.10.0000.0307.86
4.4.00.0070.0537.86
4.3.110.0000.0307.86
4.3.100.0000.0237.86
4.3.90.0000.0237.86
4.3.80.0000.0307.86
4.3.70.0030.0377.86
4.3.60.0030.0337.86
4.3.50.0030.0277.86
4.3.40.0000.0337.86
4.3.30.0030.0237.86
4.3.20.0000.0407.86
4.3.10.0000.0407.86
4.3.00.0000.0377.86

preferences:
41.06 ms | 400 KiB | 5 Q