3v4l.org

run code in 300+ PHP versions simultaneously
<?php class utils { public static function replace_unicode_escape_sequence($str) { return preg_replace_callback('/\\\\u([0-9a-f]{4})/i', function ($match) { return mb_convert_encoding(pack('H*', $match[1]), 'iso-8859-1', 'UCS-2BE'); }, $str); } } header('Content-Type: text/plain; charset=iso-8859-1'); $str = '{"name":"F\u00f6retag: Betalning"}'; echo utils::replace_unicode_escape_sequence($str); $foo = 'This is my test string \u03b50'; echo unicode2html($foo); function unicode2html($string) { return preg_replace('/\\\\u([0-9a-z]{4})/', '&#x$1;', $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)
8.3.60.0100.01017.00
8.3.50.0050.01222.08
8.3.40.0120.00618.83
8.3.30.0080.01119.08
8.3.20.0080.00020.35
8.3.10.0070.00023.70
8.3.00.0050.00321.01
8.2.180.0160.00018.73
8.2.170.0090.00622.96
8.2.160.0170.00320.65
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00420.43
8.2.110.0000.00920.66
8.2.100.0030.00918.16
8.2.90.0060.00319.47
8.2.80.0000.00818.00
8.2.70.0080.00018.13
8.2.60.0050.00318.05
8.2.50.0000.00818.25
8.2.40.0050.00320.19
8.2.30.0030.00618.49
8.2.20.0080.00018.04
8.2.10.0040.00418.30
8.2.00.0060.00618.16
8.1.280.0040.01125.92
8.1.270.0040.00424.00
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00721.31
8.1.230.0110.00017.83
8.1.220.0080.00017.91
8.1.210.0030.00618.77
8.1.200.0050.00517.73
8.1.190.0040.00417.88
8.1.180.0050.00319.51
8.1.170.0040.00418.74
8.1.160.0040.00422.23
8.1.150.0000.00718.87
8.1.140.0030.00617.72
8.1.130.0040.00418.00
8.1.120.0030.00517.82
8.1.110.0090.00417.74
8.1.100.0040.00417.82
8.1.90.0000.00817.70
8.1.80.0000.00917.74
8.1.70.0040.00417.82
8.1.60.0050.00317.97
8.1.50.0000.00917.86
8.1.40.0030.00617.84
8.1.30.0030.00517.91
8.1.20.0050.00318.01
8.1.10.0030.00617.91
8.1.00.0050.00317.85
8.0.300.0030.00618.77
8.0.290.0040.00417.00
8.0.280.0000.00718.57
8.0.270.0030.00317.41
8.0.260.0030.00317.53
8.0.250.0000.00717.15
8.0.240.0030.00317.27
8.0.230.0040.00417.17
8.0.220.0000.00717.13
8.0.210.0070.00017.14
8.0.200.0000.00717.13
8.0.190.0040.00417.21
8.0.180.0080.00017.24
8.0.170.0040.00417.16
8.0.160.0030.00517.09
8.0.150.0040.00417.11
8.0.140.0030.00517.18
8.0.130.0030.00313.57
8.0.120.0040.00417.04
8.0.110.0040.00417.16
8.0.100.0040.00417.10
8.0.90.0040.00417.02
8.0.80.0060.00917.23
8.0.70.0000.00817.14
8.0.60.0000.00717.22
8.0.50.0000.00817.18
8.0.30.0050.01517.48
8.0.20.0070.01117.40
8.0.10.0050.00317.10
8.0.00.0100.01017.36
7.4.330.0060.00015.23
7.4.320.0000.00616.95
7.4.300.0000.00616.98
7.4.290.0030.00316.95
7.4.280.0000.00917.00
7.4.270.0000.00716.88
7.4.260.0030.00316.91
7.4.250.0000.00816.85
7.4.240.0060.00216.87
7.4.230.0070.00016.71
7.4.220.0090.00916.82
7.4.210.0090.00516.89
7.4.200.0040.00416.68
7.4.190.0030.00317.11
7.4.160.0060.01117.10
7.4.150.0030.01517.40
7.4.140.0100.00917.86
7.4.130.0050.01216.87
7.4.120.0100.00716.91
7.4.110.0110.00816.53
7.4.100.0160.00316.75
7.4.90.0150.00616.70
7.4.80.0060.01219.39
7.4.70.0040.01516.98
7.4.60.0040.01416.71
7.4.50.0050.00016.58
7.4.40.0130.01016.91
7.4.30.0040.01216.71
7.4.00.0040.01115.35
7.3.330.0050.00013.59
7.3.320.0050.00013.67
7.3.310.0040.00416.79
7.3.300.0000.00716.62
7.3.290.0040.01616.63
7.3.280.0070.00916.63
7.3.270.0190.00317.40
7.3.260.0100.00716.75
7.3.250.0130.00716.59
7.3.240.0130.00616.87
7.3.230.0030.01416.74
7.3.210.0000.01716.61
7.3.200.0110.00619.39
7.3.190.0130.00616.70
7.3.180.0060.01116.75
7.3.170.0090.01116.79
7.3.160.0110.01216.73
7.3.120.0030.01215.39
7.3.10.0040.00716.96
7.3.00.0000.01116.94
7.2.330.0170.00016.67
7.2.320.0110.00817.01
7.2.310.0060.01216.96
7.2.300.0030.01316.75
7.2.290.0080.00817.05
7.2.130.0080.00417.32
7.2.120.0060.01217.23
7.2.110.0080.00617.08
7.2.100.0060.00917.11
7.2.90.0120.00317.38
7.2.80.0000.01017.28
7.2.70.0000.01217.27
7.2.60.0030.01317.32
7.2.50.0030.01017.31
7.2.40.0030.00917.32
7.2.30.0030.01317.24
7.2.20.0000.01217.13
7.2.10.0070.00717.36
7.2.00.0040.00918.49
7.1.250.0040.01116.18
7.1.100.0120.01218.50
7.1.70.0000.00817.46
7.1.60.0100.01419.46
7.1.50.0060.00617.39
7.1.00.0000.08022.32
7.0.200.0040.00416.73
7.0.140.0030.07322.08
7.0.100.0070.08719.90
7.0.90.0100.08019.91
7.0.80.0300.05019.92
7.0.70.0100.08719.94
7.0.60.0070.07719.98
7.0.50.0100.04320.36
7.0.40.0100.04320.05
7.0.30.0070.08320.00
7.0.20.0230.06720.14
7.0.10.0030.07019.99
7.0.00.0100.07720.18
5.6.280.0030.07020.90
5.6.250.0070.06020.63
5.6.240.0170.06320.56
5.6.230.0070.04720.60
5.6.220.0070.05020.59
5.6.210.0030.08020.57
5.6.200.0070.08721.12
5.6.190.0030.08321.09
5.6.180.0000.05320.94
5.6.170.0230.07721.03
5.6.160.0030.07721.03
5.6.150.0030.05321.05
5.6.140.0000.05021.04
5.6.130.0100.07021.02
5.6.120.0130.08021.05
5.6.110.0130.07721.10
5.6.100.0070.05021.11
5.6.90.0200.06021.01
5.6.80.0130.07020.40
5.6.70.0100.05320.39
5.6.60.0130.04020.49
5.6.50.0030.08720.57
5.6.40.0030.05720.54
5.6.30.0100.06320.45
5.6.20.0170.06320.47
5.6.10.0100.07720.38
5.6.00.0030.07720.36
5.5.380.0130.05020.37
5.5.370.0030.08320.36
5.5.360.0070.08720.36
5.5.350.0070.08320.48
5.5.340.0100.07320.89
5.5.330.0170.07320.83
5.5.320.0070.07320.88
5.5.310.0130.05020.88
5.5.300.0170.07020.90
5.5.290.0170.05320.80
5.5.280.0130.06320.85
5.5.270.0130.07320.80
5.5.260.0100.05720.64
5.5.250.0170.05020.66
5.5.240.0130.05320.32
5.5.230.0100.06720.29
5.5.220.0100.04320.30
5.5.210.0070.08320.15
5.5.200.0170.03720.10
5.5.190.0100.08020.00
5.5.180.0070.08320.18
5.5.160.0070.06320.12
5.5.150.0130.04720.25
5.5.140.0170.06720.24
5.5.130.0100.05020.14
5.5.120.0130.06320.23
5.5.110.0100.08720.28
5.5.100.0100.05720.14
5.5.90.0130.05320.08
5.5.80.0030.08019.95
5.5.70.0100.03720.16
5.5.60.0130.07020.17
5.5.50.0070.04020.07
5.5.40.0100.06320.15
5.5.30.0030.05320.06
5.5.20.0130.05020.12
5.5.10.0070.06320.14
5.5.00.0070.05020.14
5.4.450.0100.05019.49
5.4.440.0030.05719.41
5.4.430.0200.06319.27
5.4.420.0000.08319.53
5.4.410.0070.03719.31
5.4.400.0130.06319.21
5.4.390.0030.04719.12
5.4.380.0170.05019.04
5.4.370.0030.04319.18
5.4.360.0130.07319.12
5.4.350.0030.06019.13
5.4.340.0000.04719.24
5.4.320.0170.06719.22
5.4.310.0070.07319.04
5.4.300.0000.08019.02
5.4.290.0100.03719.23
5.4.280.0030.07719.04
5.4.270.0100.06019.17
5.4.260.0070.05719.02
5.4.250.0030.06719.04
5.4.240.0030.04318.93
5.4.230.0030.05019.03
5.4.220.0170.06019.02
5.4.210.0100.05018.89
5.4.200.0000.05718.89
5.4.190.0130.03319.02
5.4.180.0100.05718.83
5.4.170.0170.06719.12
5.4.160.0100.05019.16
5.4.150.0070.05019.02
5.4.140.0100.03716.48
5.4.130.0000.04016.39
5.4.120.0000.04016.46
5.4.110.0100.06016.52
5.4.100.0030.03716.52
5.4.90.0070.04016.32
5.4.80.0170.05016.52
5.4.70.0000.04316.53
5.4.60.0070.03716.41
5.4.50.0030.04016.44
5.4.40.0030.07716.36
5.4.30.0030.04316.43
5.4.20.0070.03316.36
5.4.10.0070.05316.29
5.4.00.0000.04315.64
5.3.290.0130.07314.75
5.3.280.0130.05314.69
5.3.270.0000.05014.74
5.3.260.0030.04314.62
5.3.250.0030.04314.75
5.3.240.0070.04714.72
5.3.230.0030.04314.70
5.3.220.0030.04714.57
5.3.210.0070.05314.55
5.3.200.0070.04014.58
5.3.190.0070.04714.66
5.3.180.0070.07314.52
5.3.170.0000.05014.58
5.3.160.0170.03714.63
5.3.150.0070.04314.60
5.3.140.0100.03314.56
5.3.130.0030.05714.49
5.3.120.0070.06314.56
5.3.110.0030.04314.67
5.3.100.0070.06314.09
5.3.90.0100.05314.05
5.3.80.0070.07014.13
5.3.70.0000.04313.95
5.3.60.0070.03314.14
5.3.50.0200.03014.08
5.3.40.0000.04313.89
5.3.30.0170.06014.04
5.3.20.0030.05713.79
5.3.10.0100.04713.68
5.3.00.0100.05013.78
5.2.170.0130.05312.35
5.2.160.0030.03312.35
5.2.150.0000.05312.35
5.2.140.0070.02712.35
5.2.130.0000.04012.35
5.2.120.0030.06312.35
5.2.110.0070.06012.35
5.2.100.0030.04312.35
5.2.90.0130.02312.35
5.2.80.0100.05012.35
5.2.70.0100.06012.35
5.2.60.0070.07012.35
5.2.50.0000.03712.35
5.2.40.0070.05012.35
5.2.30.0030.03012.35
5.2.20.0130.04712.35
5.2.10.0030.05012.35
5.2.00.0100.05012.35
5.1.60.0000.04012.35
5.1.50.0030.04012.35
5.1.40.0100.04712.35
5.1.30.0030.04012.35
5.1.20.0070.05312.35
5.1.10.0030.03012.35
5.1.00.0030.05012.35
5.0.50.0070.02012.35
5.0.40.0070.02012.35
5.0.30.0070.06012.35
5.0.20.0000.02312.35
5.0.10.0070.03712.35
5.0.00.0000.06012.35
4.4.90.0000.02312.35
4.4.80.0000.03712.35
4.4.70.0030.03312.35
4.4.60.0030.02012.35
4.4.50.0100.02712.35
4.4.40.0000.04012.35
4.4.30.0000.02012.35
4.4.20.0000.03312.35
4.4.10.0070.03012.35
4.4.00.0000.05312.35
4.3.110.0000.03712.35
4.3.100.0000.02312.35
4.3.90.0030.03312.35
4.3.80.0030.04312.35
4.3.70.0030.01712.35
4.3.60.0100.03012.35
4.3.50.0070.02712.35
4.3.40.0000.04712.35
4.3.30.0000.03012.35
4.3.20.0000.01712.35
4.3.10.0000.02012.35
4.3.00.0000.01712.35

preferences:
44.3 ms | 401 KiB | 5 Q