3v4l.org

run code in 300+ PHP versions simultaneously
<?php $examples = array( 'Valid ASCII' => "a", 'Valid 2 Octet Sequence' => "\xc3\xb1", 'Invalid 2 Octet Sequence' => "\xc3\x28", 'Invalid Sequence Identifier' => "\xa0\xa1", 'Valid 3 Octet Sequence' => "\xe2\x82\xa1", 'Invalid 3 Octet Sequence (in 2nd Octet)' => "\xe2\x28\xa1", 'Invalid 3 Octet Sequence (in 3rd Octet)' => "\xe2\x82\x28", 'Surrogate pair' => "\xed\xa0\x80", 'Valid 4 Octet Sequence' => "\xf0\x90\x8c\xbc", 'Invalid 4 Octet Sequence (in 2nd Octet)' => "\xf0\x28\x8c\xbc", 'Invalid 4 Octet Sequence (in 3rd Octet)' => "\xf0\x90\x28\xbc", 'Invalid 4 Octet Sequence (in 4th Octet)' => "\xf0\x28\x8c\x28", 'Valid 5 Octet Sequence (but not Unicode!)' => "\xf8\xa1\xa1\xa1\xa1", 'Valid 6 Octet Sequence (but not Unicode!)' => "\xfc\xa1\xa1\xa1\xa1\xa1", ); foreach ($examples as $k => $v) { echo "{$k}\n"; echo var_dump((bool)preg_match("//u", $v)); 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)
8.3.70.0030.01318.43
8.3.60.0070.00716.88
8.3.50.0090.01318.38
8.3.40.0040.01118.97
8.3.30.0040.01118.92
8.3.20.0040.00418.86
8.3.10.0090.00020.65
8.3.00.0080.00019.51
8.2.180.0120.00316.88
8.2.170.0070.01022.96
8.2.160.0130.00620.69
8.2.150.0000.00825.66
8.2.140.0060.00324.66
8.2.130.0070.00026.16
8.2.120.0080.00019.02
8.2.110.0070.00321.00
8.2.100.0040.00717.97
8.2.90.0060.00319.38
8.2.80.0090.00019.40
8.2.70.0030.00617.63
8.2.60.0110.00017.78
8.2.50.0030.00618.07
8.2.40.0000.00818.16
8.2.30.0030.00718.08
8.2.20.0030.00719.56
8.2.10.0000.00717.98
8.2.00.0000.00717.97
8.1.280.0200.00025.92
8.1.270.0050.00324.66
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0090.00320.61
8.1.230.0070.00720.89
8.1.220.0030.00517.74
8.1.210.0000.00918.79
8.1.200.0030.00617.23
8.1.190.0040.00417.54
8.1.180.0090.00018.10
8.1.170.0030.00518.91
8.1.160.0030.00618.93
8.1.150.0040.00418.79
8.1.140.0050.00217.52
8.1.130.0000.00817.73
8.1.120.0040.00717.64
8.1.110.0000.00717.60
8.1.100.0000.00717.52
8.1.90.0020.00517.68
8.1.80.0000.00717.54
8.1.70.0000.00717.55
8.1.60.0080.00017.63
8.1.50.0070.00017.50
8.1.40.0000.00717.57
8.1.30.0000.00817.86
8.1.20.0000.00817.70
8.1.10.0060.00317.59
8.1.00.0080.00017.59
8.0.300.0040.00420.04
8.0.290.0000.00716.88
8.0.280.0050.00318.41
8.0.270.0000.00817.16
8.0.260.0030.00317.03
8.0.250.0040.00417.05
8.0.240.0000.01217.16
8.0.230.0030.00317.21
8.0.220.0000.00717.10
8.0.210.0000.00717.04
8.0.200.0000.00617.06
8.0.190.0060.00317.18
8.0.180.0040.00417.17
8.0.170.0070.00317.12
8.0.160.0000.00717.12
8.0.150.0080.00017.14
8.0.140.0060.00316.92
8.0.130.0000.00613.60
8.0.120.0000.00817.10
8.0.110.0040.00417.02
8.0.100.0080.00017.01
8.0.90.0000.00817.00
8.0.80.0040.01117.10
8.0.70.0070.00017.06
8.0.60.0050.00216.98
8.0.50.0030.00617.13
8.0.30.0060.01117.18
8.0.20.0090.01017.47
8.0.10.0000.00717.15
8.0.00.0120.01117.11
7.4.330.0000.00513.19
7.4.320.0030.00316.88
7.4.300.0070.00016.87
7.4.290.0000.00616.63
7.4.280.0040.00416.77
7.4.270.0070.00016.81
7.4.260.0000.00613.50
7.4.250.0050.00316.82
7.4.240.0030.00316.87
7.4.230.0030.00316.92
7.4.220.0100.01316.79
7.4.210.0070.00716.67
7.4.200.0050.00216.98
7.4.190.0030.00317.00
7.4.160.0130.00816.78
7.4.150.0090.00916.61
7.4.140.0140.01016.84
7.4.130.0150.00316.74
7.4.120.0090.00916.75
7.4.110.0090.00916.83
7.4.100.0140.00416.69
7.4.90.0120.01216.72
7.4.80.0120.00619.39
7.4.70.0140.00416.65
7.4.60.0090.00616.68
7.4.50.0050.00516.67
7.4.40.0120.00316.75
7.4.30.0060.01216.71
7.4.00.0120.00315.25
7.3.330.0030.00313.32
7.3.320.0030.00313.20
7.3.310.0030.00316.42
7.3.300.0000.00716.46
7.3.290.0070.01116.48
7.3.280.0060.01116.48
7.3.270.0100.01016.36
7.3.260.0000.01816.81
7.3.250.0110.00616.73
7.3.240.0170.00016.53
7.3.230.0100.00716.51
7.3.210.0060.01216.81
7.3.200.0110.00616.55
7.3.190.0120.01216.50
7.3.180.0030.01416.80
7.3.170.0070.01116.51
7.3.160.0050.01116.55
7.3.120.0050.00815.19
7.2.330.0100.00716.68
7.2.320.0130.00616.88
7.2.310.0190.00716.66
7.2.300.0100.00716.78
7.2.290.0030.01916.64
7.2.00.0040.00719.57
7.1.100.0090.00018.34
7.1.70.0160.00317.35
7.1.60.0030.02019.31
7.1.50.0040.01817.19
7.1.00.0030.03722.55
7.0.200.0100.00016.67
7.0.140.0130.06322.15
7.0.120.0000.05322.14
7.0.60.0070.06720.01
7.0.50.0100.08017.87
7.0.40.0070.06020.42
7.0.30.0300.07320.20
7.0.20.0300.07720.32
7.0.10.0300.06320.19
7.0.00.0030.05320.10
5.6.280.0070.06721.10
5.6.210.0070.04320.66
5.6.200.0070.08018.09
5.6.190.0000.05020.67
5.6.180.0300.08020.42
5.6.170.0230.06720.33
5.6.160.0030.04720.37
5.6.150.0000.08018.12
5.6.140.0230.06018.11
5.6.130.0000.04718.21
5.6.120.0100.04020.99
5.6.110.0200.07721.08
5.6.100.0100.08321.00
5.6.90.0100.05321.07
5.6.80.0130.05320.41
5.6.70.0270.04720.39
5.5.350.0400.07020.44
5.5.340.0100.07018.02
5.5.330.0070.08720.57
5.5.320.0270.08020.23
5.5.310.0300.07720.27
5.5.300.0100.07717.86
5.5.290.0070.08017.98
5.5.280.0030.05720.88
5.5.270.0030.07720.80
5.5.260.0170.07320.87
5.5.250.0030.09320.58
5.5.240.0130.02720.35
5.4.450.0030.04019.50
5.4.440.0000.04319.48
5.4.430.0030.03719.50
5.4.420.0030.04019.40
5.4.410.0100.06019.41
5.4.400.0070.07718.79
5.4.390.0030.05018.80
5.4.380.0130.07019.08
5.4.370.0000.07019.14
5.4.360.0100.06719.15
5.4.350.0100.06719.20
5.4.340.0030.05718.81
5.4.320.0030.06018.81
5.4.310.0100.07319.13
5.4.300.0100.07018.91
5.4.290.0000.08319.09
5.4.280.0030.08019.13
5.4.270.0100.07319.08
5.4.260.0070.04318.91
5.4.250.0070.07318.91
5.4.240.0030.04019.15
5.4.230.0030.05018.80
5.4.220.0030.08019.17
5.4.210.0100.07319.15
5.4.200.0070.08319.16
5.4.190.0070.03718.78
5.4.180.0100.04319.14
5.4.170.0030.08019.14
5.4.160.0170.06718.77
5.4.150.0070.07018.89
5.4.140.0070.07016.44
5.4.130.0100.03716.21
5.4.120.0130.05716.19
5.4.110.0100.06316.36
5.4.100.0070.07316.36
5.4.90.0030.05016.34
5.4.80.0070.07716.31
5.4.70.0000.07316.59
5.4.60.0070.05716.37
5.4.50.0070.03716.25
5.4.40.0070.03316.21
5.4.30.0030.07316.37
5.4.20.0030.03316.27
5.4.10.0070.03316.13
5.4.00.0000.04015.70
5.3.290.0030.04014.60
5.3.280.0100.05314.57
5.3.270.0070.08314.54
5.3.260.0070.05014.69
5.3.250.0030.03714.56
5.3.240.0030.06714.53
5.3.230.0100.03314.61
5.3.220.0070.07714.49
5.3.210.0100.05014.54
5.3.200.0170.06314.46
5.3.190.0030.08014.38
5.3.180.0100.07314.46
5.3.170.0130.04014.52
5.3.160.0100.06014.44
5.3.150.0000.04014.46
5.3.140.0030.03714.43
5.3.130.0130.06714.43
5.3.120.0100.03314.47
5.3.110.0100.03014.44
5.3.100.0030.07713.96
5.3.90.0030.03713.94
5.3.80.0030.06313.95
5.3.70.0030.04313.98
5.3.60.0030.04013.79
5.3.50.0070.03313.88
5.3.40.0130.03313.77
5.3.30.0070.04313.85
5.3.20.0000.04313.78
5.3.10.0030.07313.58
5.3.00.0000.04013.59
5.2.170.0000.03011.23
5.2.160.0000.05711.04
5.2.150.0030.06311.14
5.2.140.0070.03311.07
5.2.130.0000.03311.10
5.2.120.0100.06310.93
5.2.110.0070.02711.00
5.2.100.0070.05311.04
5.2.90.0070.03711.04
5.2.80.0000.03711.09
5.2.70.0000.04310.98
5.2.60.0070.03311.04
5.2.50.0030.03710.96
5.2.40.0030.05710.82
5.2.30.0030.06010.90
5.2.20.0000.05710.78
5.2.10.0030.06010.86
5.2.00.0000.03310.67
5.1.60.0000.0279.90
5.1.50.0030.02310.07
5.1.40.0130.0439.97
5.1.30.0030.02710.38
5.1.20.0070.05310.38
5.1.10.0030.0309.97
5.1.00.0030.03010.13
5.0.50.0030.0308.39
5.0.40.0000.0278.42
5.0.30.0070.0538.24
5.0.20.0000.0308.21
5.0.10.0000.0238.31
5.0.00.0000.0308.20
4.4.90.0070.0207.66
4.4.80.0030.0337.66
4.4.70.0030.0137.66
4.4.60.0000.0207.66
4.4.50.0000.0177.66
4.4.40.0030.0237.66
4.4.30.0070.0307.66
4.4.20.0030.0137.66
4.4.10.0030.0377.66
4.4.00.0030.0277.66
4.3.110.0030.0307.66
4.3.100.0030.0337.66
4.3.90.0030.0277.66
4.3.80.0000.0277.66
4.3.70.0000.0177.66
4.3.60.0000.0277.66
4.3.50.0000.0177.66
4.3.40.0000.0277.66
4.3.30.0030.0177.66
4.3.20.0000.0177.66
4.3.10.0000.0137.66
4.3.00.0000.0277.66

preferences:
47.71 ms | 401 KiB | 5 Q