3v4l.org

run code in 300+ PHP versions simultaneously
<?php $examples = array( 'Valid ASCII' => "a", 'Valid 2 Octet Sequence' => "\xc3\xb1", 'Invalid 2 Octet Sequence' => "\xc3\x28", 'Invalid Sequence Identifier' => "\xa0\xa1", 'Valid 3 Octet Sequence' => "\xe2\x82\xa1", 'Invalid 3 Octet Sequence (in 2nd Octet)' => "\xe2\x28\xa1", 'Invalid 3 Octet Sequence (in 3rd Octet)' => "\xe2\x82\x28", 'Invalid 3 Octet Sequence (surrogate pair)' => "\xed\xa0\x80", 'Valid 4 Octet Sequence' => "\xf0\x90\x8c\xbc", 'Invalid 4 Octet Sequence (in 2nd Octet)' => "\xf0\x28\x8c\xbc", 'Invalid 4 Octet Sequence (in 3rd Octet)' => "\xf0\x90\x28\xbc", 'Invalid 4 Octet Sequence (in 4th Octet)' => "\xf0\x28\x8c\x28", 'Valid 5 Octet Sequence (but not Unicode!)' => "\xf8\xa1\xa1\xa1\xa1", 'Valid 6 Octet Sequence (but not Unicode!)' => "\xfc\xa1\xa1\xa1\xa1\xa1", ); foreach ($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)
8.3.70.0100.00616.63
8.3.60.0100.01318.58
8.3.50.0250.00521.21
8.3.40.0100.00718.85
8.3.30.0070.00720.39
8.3.20.0000.00720.13
8.3.10.0090.00021.97
8.3.00.0080.00022.39
8.2.180.0140.00716.50
8.2.170.0120.00322.96
8.2.160.0130.00720.38
8.2.150.0000.00824.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0080.00021.05
8.2.110.0090.00022.25
8.2.100.0070.00418.03
8.2.90.0040.00419.08
8.2.80.0030.00619.37
8.2.70.0060.00317.75
8.2.60.0060.00317.68
8.2.50.0030.00618.07
8.2.40.0030.00618.21
8.2.30.0070.00019.40
8.2.20.0040.00417.76
8.2.10.0040.00417.88
8.2.00.0030.00617.84
8.1.280.0060.01025.92
8.1.270.0040.00423.99
8.1.260.0060.00326.35
8.1.250.0080.00028.09
8.1.240.0030.00623.64
8.1.230.0040.00819.05
8.1.220.0090.00017.76
8.1.210.0000.00818.77
8.1.200.0040.00417.23
8.1.190.0040.00417.45
8.1.180.0030.00618.10
8.1.170.0070.00318.78
8.1.160.0040.00418.84
8.1.150.0000.00818.80
8.1.140.0040.00417.48
8.1.130.0000.00717.86
8.1.120.0000.00717.51
8.1.110.0040.00417.63
8.1.100.0000.00717.52
8.1.90.0000.00817.53
8.1.80.0040.00417.60
8.1.70.0000.00817.57
8.1.60.0030.00617.67
8.1.50.0040.00417.68
8.1.40.0040.00817.58
8.1.30.0000.00817.73
8.1.20.0000.00817.71
8.1.10.0000.00717.67
8.1.00.0000.00817.62
8.0.300.0040.00418.77
8.0.290.0040.00417.18
8.0.280.0040.00418.49
8.0.270.0040.00417.20
8.0.260.0030.00317.09
8.0.250.0080.00017.05
8.0.240.0000.00717.07
8.0.230.0070.00017.05
8.0.220.0000.00716.97
8.0.210.0070.00017.13
8.0.200.0000.00817.21
8.0.190.0000.00717.13
8.0.180.0000.00717.01
8.0.170.0080.00016.98
8.0.160.0000.00717.00
8.0.150.0040.00417.07
8.0.140.0030.00717.12
8.0.130.0050.00013.58
8.0.120.0000.00817.00
8.0.110.0070.00017.12
8.0.100.0070.00016.98
8.0.90.0070.00017.23
8.0.80.0030.01117.16
8.0.70.0040.00417.17
8.0.60.0040.00416.98
8.0.50.0030.00516.95
8.0.30.0090.00917.08
8.0.20.0090.01417.40
8.0.10.0000.00717.17
8.0.00.0120.00716.84
7.4.330.0050.00016.83
7.4.320.0030.00316.72
7.4.300.0000.00716.79
7.4.290.0000.00716.83
7.4.280.0070.00016.80
7.4.270.0000.00716.78
7.4.260.0030.00313.46
7.4.250.0080.00016.68
7.4.240.0030.00316.69
7.4.230.0070.00016.66
7.4.220.0040.01516.91
7.4.210.0080.00916.83
7.4.200.0030.00316.77
7.4.190.0000.00716.89
7.4.160.0040.01816.88
7.4.150.0130.00717.40
7.4.140.0050.01217.86
7.4.130.0120.00516.70
7.4.120.0100.00916.64
7.4.110.0090.00916.77
7.4.100.0030.02016.77
7.4.90.0150.00316.67
7.4.80.0190.00019.39
7.4.70.0040.01216.54
7.4.60.0080.00816.69
7.4.50.0030.00616.76
7.4.40.0000.01822.77
7.4.30.0060.01216.82
7.4.00.0150.00315.04
7.3.330.0030.00313.39
7.3.320.0000.00513.32
7.3.310.0070.00016.49
7.3.300.0070.00016.50
7.3.290.0070.00716.48
7.3.280.0050.01016.46
7.3.270.0090.00917.40
7.3.260.0120.00616.42
7.3.250.0100.00716.54
7.3.240.0130.00616.48
7.3.230.0070.01016.80
7.3.210.0100.01016.76
7.3.200.0160.00719.39
7.3.190.0100.00716.46
7.3.180.0110.01316.48
7.3.170.0150.00316.95
7.3.160.0120.00916.77
7.3.120.0070.00714.99
7.3.00.0000.01417.00
7.2.330.0090.00916.82
7.2.320.0170.00616.79
7.2.310.0040.01316.57
7.2.300.0070.01016.77
7.2.290.0080.00816.77
7.2.130.0070.00717.11
7.2.120.0030.00616.95
7.2.110.0060.00316.75
7.2.100.0060.01017.15
7.2.90.0080.00417.11
7.2.80.0030.00917.17
7.2.70.0040.00817.09
7.2.60.0090.00317.04
7.2.50.0060.00916.79
7.2.40.0120.00317.18
7.2.30.0000.01416.91
7.2.20.0080.00517.22
7.2.10.0040.00816.69
7.2.00.0020.00918.38
7.1.250.0080.00415.87
7.1.240.0070.00716.10
7.1.230.0030.00716.19
7.1.220.0100.00315.82
7.1.210.0070.00715.71
7.1.200.0090.00615.92
7.1.190.0070.01015.88
7.1.180.0030.00915.91
7.1.170.0030.00716.11
7.1.160.0000.00815.95
7.1.150.0090.00616.09
7.1.140.0000.01415.96
7.1.130.0060.00616.00
7.1.120.0030.01316.02
7.1.110.0060.00915.61
7.1.100.0050.00817.13
7.1.90.0030.00716.21
7.1.80.0090.00016.09
7.1.70.0020.01016.74
7.1.60.0080.00717.58
7.1.50.0040.01416.67
7.1.40.0080.00416.12
7.1.30.0070.00715.99
7.1.20.0030.01015.71
7.1.10.0130.00315.93
7.1.00.0040.02919.19
7.0.330.0030.00615.51
7.0.320.0000.01415.38
7.0.310.0130.00015.36
7.0.300.0030.01015.59
7.0.290.0060.00315.30
7.0.280.0070.00315.13
7.0.270.0060.00615.32
7.0.260.0070.00715.38
7.0.250.0030.00915.45
7.0.240.0030.01015.67
7.0.230.0030.01015.43
7.0.220.0100.00015.66
7.0.210.0120.00315.34
7.0.200.0020.00916.34
7.0.190.0000.01415.38
7.0.180.0070.00715.46
7.0.170.0070.00715.75
7.0.160.0090.00615.54
7.0.150.0030.00615.64
7.0.140.0020.04318.95
7.0.130.0040.01115.70
7.0.120.0100.00315.54
7.0.110.0080.00315.38
7.0.100.0070.02517.73
7.0.90.0220.04317.66
7.0.80.0140.04217.68
7.0.70.0050.04217.71
7.0.60.0100.03017.71
7.0.50.0130.04317.95
7.0.40.0060.04716.93
7.0.30.0050.04116.81
7.0.20.0050.04716.89
7.0.10.0000.04116.74
7.0.00.0050.03216.95
5.6.380.0030.00714.54
5.6.370.0070.01114.52
5.6.360.0030.01214.22
5.6.350.0060.00314.47
5.6.340.0080.00814.31
5.6.330.0070.00314.21
5.6.320.0030.00614.61
5.6.310.0030.00614.29
5.6.300.0040.00414.38
5.6.290.0070.00714.56
5.6.280.0040.04017.75
5.6.270.0100.00314.38
5.6.260.0030.00914.32
5.6.250.0040.02517.53
5.6.240.0080.03817.65
5.6.230.0090.04117.39
5.6.220.0020.04717.50
5.6.210.0050.02417.58
5.6.200.0100.04217.60
5.6.190.0060.04617.68
5.6.180.0050.04617.84
5.6.170.0150.04017.82
5.6.160.0030.02817.81
5.6.150.0130.03217.75
5.6.140.0080.04017.86
5.6.130.0170.03717.78
5.6.120.0030.02717.69
5.6.110.0080.02017.73
5.6.100.0140.03217.63
5.6.90.0070.04517.67
5.6.80.0150.02017.27
5.6.70.0030.03017.43
5.6.60.0030.03517.32
5.6.50.0050.04217.45
5.6.40.0030.04717.39
5.6.30.0050.03717.30
5.6.20.0080.04217.35
5.6.10.0100.03317.25
5.6.00.0080.04017.30
5.5.380.0060.04215.88
5.5.370.0080.05415.73
5.5.360.0130.02315.86
5.5.350.0080.04415.79
5.5.340.0050.04015.93
5.5.330.0020.02716.00
5.5.320.0030.04216.12
5.5.310.0050.05016.09
5.5.300.0030.03315.97
5.5.290.0050.04216.04
5.5.280.0020.03815.83
5.5.270.0080.02315.88
5.5.260.0050.02916.01
5.5.250.0090.04315.81
5.5.240.0080.04115.60
5.5.230.0050.04515.66
5.5.220.0060.03315.67
5.5.210.0050.04415.59
5.5.200.0030.04715.63
5.5.190.0020.04415.59
5.5.180.0090.04015.67
5.5.170.0030.00311.30
5.5.160.0070.02315.75
5.5.150.0110.02015.73
5.5.140.0120.03515.72
5.5.130.0070.04215.72
5.5.120.0050.03815.59
5.5.110.0030.02515.71
5.5.100.0070.02815.60
5.5.90.0100.02015.64
5.5.80.0080.04015.52
5.5.70.0070.04015.56
5.5.60.0060.04115.64
5.5.50.0090.04015.59
5.5.40.0070.03315.51
5.5.30.0040.03515.64
5.5.20.0050.05015.62
5.5.10.0110.03815.58
5.5.00.0090.02815.57
5.4.450.0050.02615.19
5.4.440.0080.04115.29
5.4.430.0110.03515.06
5.4.420.0060.04015.08
5.4.410.0060.03615.05
5.4.400.0030.04014.95
5.4.390.0060.03914.97
5.4.380.0080.03815.03
5.4.370.0080.04115.10
5.4.360.0030.04714.97
5.4.350.0070.03815.03
5.4.340.0040.02615.00
5.4.330.0030.00711.23
5.4.320.0080.03515.06
5.4.310.0050.03215.17
5.4.300.0050.04414.96
5.4.290.0040.02314.97
5.4.280.0050.04215.04
5.4.270.0080.02014.97
5.4.260.0070.02014.86
5.4.250.0100.03115.01
5.4.240.0030.03714.97
5.4.230.0030.02814.98
5.4.220.0020.04614.81
5.4.210.0060.03815.00
5.4.200.0050.04214.80
5.4.190.0070.03214.95
5.4.180.0110.03215.19
5.4.170.0100.01815.21
5.4.160.0070.03815.03
5.4.150.0120.03214.94
5.4.140.0020.04413.79
5.4.130.0090.02813.81
5.4.120.0070.03813.55
5.4.110.0090.02713.75
5.4.100.0060.03313.61
5.4.90.0080.03313.64
5.4.80.0080.02013.80
5.4.70.0070.02813.61
5.4.60.0040.03813.66
5.4.50.0080.03013.54
5.4.40.0080.03613.55
5.4.30.0100.03713.61
5.4.20.0060.03313.64
5.4.10.0060.03413.56
5.4.00.0070.03913.48
5.3.290.0080.03612.50
5.3.280.0100.02512.52
5.3.270.0030.03812.59
5.3.260.0030.03712.50
5.3.250.0050.04112.55
5.3.240.0050.03512.42
5.3.230.0070.02512.56
5.3.220.0030.03712.44
5.3.210.0030.04012.50
5.3.200.0070.03412.50
5.3.190.0050.03012.43
5.3.180.0020.03912.60
5.3.170.0060.03512.53
5.3.160.0020.03112.55
5.3.150.0050.02712.48
5.3.140.0050.03212.60
5.3.130.0090.02112.45
5.3.120.0050.03912.51
5.3.110.0090.03912.49
5.3.100.0050.04412.22
5.3.90.0050.02812.32
5.3.80.0020.03912.25
5.3.70.0030.03612.13
5.3.60.0030.04012.14
5.3.50.0050.03912.13
5.3.40.0070.03612.08
5.3.30.0100.03412.13
5.3.20.0000.04311.98
5.3.10.0060.03611.99
5.3.00.0030.03811.93
5.2.170.0050.03310.60
5.2.160.0080.02810.65
5.2.150.0030.03510.69
5.2.140.0070.01310.66
5.2.130.0030.03010.66
5.2.120.0030.03310.63
5.2.110.0030.03010.56
5.2.100.0030.03310.66
5.2.90.0020.03310.65
5.2.80.0050.02710.66
5.2.70.0040.03410.70
5.2.60.0020.03610.54
5.2.50.0050.01810.59
5.2.40.0060.03110.61
5.2.30.0050.02710.60
5.2.20.0050.02110.61
5.2.10.0020.03510.56
5.2.00.0030.02010.44
5.1.60.0030.02310.15
5.1.50.0050.02510.12
5.1.40.0050.02110.11
5.1.30.0050.03010.25
5.1.20.0040.03010.24
5.1.10.0070.02710.17
5.1.00.0070.02210.14
5.0.50.0030.0259.38
5.0.40.0050.0239.35
5.0.30.0030.0349.17
5.0.20.0000.0269.23
5.0.10.0010.0239.20
5.0.00.0030.0369.20
4.4.90.0020.0209.02
4.4.80.0000.0209.02
4.4.70.0010.0199.02
4.4.60.0030.0199.02
4.4.50.0050.0189.02
4.4.40.0010.0269.02
4.4.30.0020.0189.02
4.4.20.0000.0109.02
4.4.10.0040.0129.02
4.4.00.0010.0269.02
4.3.110.0030.0189.02
4.3.100.0020.0139.02
4.3.90.0000.0129.02
4.3.80.0030.0279.02
4.3.70.0000.0209.02
4.3.60.0070.0179.02
4.3.50.0030.0199.02
4.3.40.0020.0209.02
4.3.30.0030.0159.02
4.3.20.0020.0179.02
4.3.10.0020.0189.02
4.3.00.0000.0209.02

preferences:
86.76 ms | 401 KiB | 5 Q