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);

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)
8.3.60.0070.01016.50
8.3.50.0110.00522.03
8.3.40.0000.01518.93
8.3.30.0000.01819.21
8.3.20.0000.00720.21
8.3.10.0000.00823.48
8.3.00.0040.00419.27
8.2.180.0090.00618.49
8.2.170.0120.00322.96
8.2.160.0030.01020.66
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0000.00720.58
8.2.110.0030.00622.63
8.2.100.0080.00420.14
8.2.90.0050.00619.13
8.2.80.0050.00318.13
8.2.70.0060.00318.00
8.2.60.0050.00318.18
8.2.50.0030.00618.13
8.2.40.0050.00320.13
8.2.30.0000.00818.33
8.2.20.0000.00818.15
8.2.10.0060.00318.48
8.2.00.0060.00318.14
8.1.280.0140.00425.92
8.1.270.0000.00922.27
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0060.00323.91
8.1.230.0070.00419.06
8.1.220.0000.00817.89
8.1.210.0040.00418.77
8.1.200.0000.00917.73
8.1.190.0000.00817.73
8.1.180.0000.00819.63
8.1.170.0030.00618.98
8.1.160.0070.00022.12
8.1.150.0050.00319.00
8.1.140.0030.00617.80
8.1.130.0030.00317.98
8.1.120.0030.00517.74
8.1.110.0000.00917.71
8.1.100.0000.00717.85
8.1.90.0030.00517.64
8.1.80.0000.00717.78
8.1.70.0020.00517.75
8.1.60.0110.00317.79
8.1.50.0050.00317.71
8.1.40.0000.00817.76
8.1.30.0040.00418.01
8.1.20.0040.00418.00
8.1.10.0040.00417.91
8.1.00.0000.00717.89
8.0.300.0000.00718.77
8.0.290.0040.00417.29
8.0.280.0000.00718.52
8.0.270.0030.00317.38
8.0.260.0020.00517.42
8.0.250.0030.00317.23
8.0.240.0030.00317.23
8.0.230.0000.00717.12
8.0.220.0000.00717.15
8.0.210.0070.00017.10
8.0.200.0000.00717.20
8.0.190.0000.00817.28
8.0.180.0040.00417.22
8.0.170.0000.00817.25
8.0.160.0040.00417.27
8.0.150.0000.00817.10
8.0.140.0020.00517.09
8.0.130.0060.00013.54
8.0.120.0030.00517.16
8.0.110.0040.00417.12
8.0.100.0040.00416.98
8.0.90.0040.00417.14
8.0.80.0080.01117.11
8.0.70.0070.00017.05
8.0.60.0040.00416.98
8.0.50.0040.00417.12
8.0.30.0120.00717.60
8.0.20.0180.00417.49
8.0.10.0000.01017.35
8.0.00.0070.01017.05
7.4.330.0030.00315.23
7.4.320.0030.00316.80
7.4.300.0000.00616.94
7.4.290.0030.00316.85
7.4.280.0040.00416.86
7.4.270.0080.00016.86
7.4.260.0070.00016.85
7.4.250.0070.00016.81
7.4.240.0020.00516.94
7.4.230.0040.00416.94
7.4.220.0070.01016.75
7.4.210.0060.00916.83
7.4.200.0040.00417.06
7.4.190.0000.00717.02
7.4.160.0060.00916.64
7.4.150.0100.00717.40
7.4.140.0060.01217.86
7.4.130.0100.00716.70
7.4.120.0100.01116.83
7.4.110.0100.00716.61
7.4.100.0100.01016.82
7.4.90.0110.00716.73
7.4.80.0060.01219.39
7.4.70.0140.01016.70
7.4.60.0140.00416.59
7.4.50.0000.01016.83
7.4.40.0150.00316.93
7.4.30.0070.01016.96
7.4.00.0030.00915.18
7.3.330.0050.00013.61
7.3.320.0050.00013.57
7.3.310.0040.00416.68
7.3.300.0000.00716.76
7.3.290.0030.01716.61
7.3.280.0100.00716.59
7.3.270.0140.00717.40
7.3.260.0130.00716.70
7.3.250.0120.00616.78
7.3.240.0070.01316.72
7.3.230.0030.01316.87
7.3.210.0040.01316.79
7.3.200.0100.00716.89
7.3.190.0060.01216.80
7.3.180.0090.00616.72
7.3.170.0070.01016.77
7.3.160.0110.00516.85
7.3.120.0030.01015.35
7.2.330.0090.01516.77
7.2.320.0180.00016.85
7.2.310.0060.01817.08
7.2.300.0130.00316.98
7.2.290.0030.01416.89
7.2.60.0350.00516.91
7.2.00.0040.01219.95
7.1.200.0040.00816.05
7.1.100.0070.01118.61
7.1.70.0030.00517.61
7.1.60.0030.02319.46
7.1.50.0090.01217.28
7.1.00.0130.06322.44
7.0.200.0050.00517.02
7.0.140.0030.07321.96
7.0.100.0170.07019.95
7.0.90.0070.04719.87
7.0.80.0170.07019.88
7.0.70.0300.08320.13
7.0.60.0300.07719.98
7.0.50.0270.05320.32
7.0.40.0100.04320.18
7.0.30.0030.07020.14
7.0.20.0030.07720.10
7.0.10.0130.03320.13
7.0.00.0070.04320.10
5.6.280.0000.06721.11
5.6.250.0100.04720.61
5.6.240.0100.08020.70
5.6.230.0030.08720.53
5.6.220.0070.08720.48
5.6.210.0030.06020.62
5.6.200.0070.07721.12
5.6.190.0130.05721.18
5.6.180.0070.07721.09
5.6.170.0070.08321.09
5.6.160.0130.07720.96
5.6.150.0100.04721.11
5.6.140.0170.06021.18
5.6.130.0200.07721.02
5.6.120.0100.07720.96
5.6.110.0130.06721.17
5.6.100.0030.04321.00
5.6.90.0070.04021.05
5.6.80.0100.03320.42
5.6.70.0100.04020.32
5.6.60.0070.03320.54
5.6.50.0070.03720.56
5.6.40.0070.04020.38
5.6.30.0030.03720.41
5.6.20.0070.03720.42
5.6.10.0070.03720.41
5.6.00.0100.05020.48
5.5.380.0000.06020.42
5.5.370.0170.07320.46
5.5.360.0070.08320.56
5.5.350.0030.04720.42
5.5.340.0170.06720.80
5.5.330.0070.08020.74
5.5.320.0130.04320.93
5.5.310.0070.05020.88
5.5.300.0030.04320.86
5.5.290.0130.07720.80
5.5.280.0030.04720.83
5.5.270.0030.04720.88
5.5.260.0100.06020.63
5.5.250.0170.06720.69
5.5.240.0130.03320.32
5.5.230.0000.04320.16
5.5.220.0030.04020.21
5.5.210.0100.03320.30
5.5.200.0100.03720.21
5.5.190.0070.03720.14
5.5.180.0070.03720.27
5.5.160.0130.03020.25
5.5.150.0070.04320.26
5.5.140.0030.04020.27
5.5.130.0030.04020.29
5.5.120.0000.04320.21
5.5.110.0000.04319.99
5.5.100.0070.03719.96
5.5.90.0030.04020.07
5.5.80.0230.02320.04
5.5.70.0000.04319.94
5.5.60.0000.04320.05
5.5.50.0070.03720.09
5.5.40.0030.04020.16
5.5.30.0030.04320.13
5.5.20.0070.03720.05
5.5.10.0070.03720.12
5.5.00.0030.04319.97
5.4.450.0100.08019.38
5.4.440.0030.04719.27
5.4.430.0100.05719.41
5.4.420.0070.04319.36
5.4.410.0130.07719.24
5.4.400.0030.04019.03
5.4.390.0070.04019.02
5.4.380.0100.05018.88
5.4.370.0070.03318.96
5.4.360.0030.04319.03
5.4.350.0100.03019.16
5.4.340.0000.04019.04
5.4.320.0070.03718.85
5.4.310.0070.03318.91
5.4.300.0030.03719.09
5.4.290.0030.04019.12
5.4.280.0000.04019.12
5.4.270.0070.03319.13
5.4.260.0030.03719.13
5.4.250.0000.04719.22
5.4.240.0030.03719.02
5.4.230.0000.04018.84
5.4.220.0070.04319.11
5.4.210.0000.04718.89
5.4.200.0070.03319.15
5.4.190.0070.03319.17
5.4.180.0100.03018.86
5.4.170.0100.02318.86
5.4.160.0000.03319.11
5.4.150.0030.04319.02
5.4.140.0030.03316.55
5.4.130.0100.02716.50
5.4.120.0030.03716.38
5.4.110.0000.03716.56
5.4.100.0100.03016.49
5.4.90.0030.03016.42
5.4.80.0030.03716.38
5.4.70.0000.04716.47
5.4.60.0000.07716.48
5.4.50.0030.06016.36
5.4.40.0000.03716.37
5.4.30.0100.06716.36
5.4.20.0030.04716.30
5.4.10.0000.04316.45
5.4.00.0070.05315.85
5.3.290.0000.04014.77
5.3.280.0000.04014.66
5.3.270.0000.04014.63
5.3.260.0000.04014.66
5.3.250.0100.03314.61
5.3.240.0070.03314.59
5.3.230.0030.03714.57
5.3.220.0100.03714.54
5.3.210.0070.03314.62
5.3.200.0030.03714.62
5.3.190.0030.03014.50
5.3.180.0030.04314.55
5.3.170.0000.05014.59
5.3.160.0030.05014.66
5.3.150.0070.06314.67
5.3.140.0030.03314.68
5.3.130.0000.04314.66
5.3.120.0030.05714.60
5.3.110.0100.04014.62
5.3.100.0070.05314.15
5.3.90.0030.06714.14
5.3.80.0100.07314.00
5.3.70.0070.06314.08
5.3.60.0030.05014.03
5.3.50.0000.04714.02
5.3.40.0030.03314.02
5.3.30.0070.07314.05
5.3.20.0100.07013.70
5.3.10.0000.08013.71
5.3.00.0030.04313.67
5.2.170.0030.04011.04
5.2.160.0100.03011.20
5.2.150.0100.05711.16
5.2.140.0030.06311.25
5.2.130.0000.03011.14
5.2.120.0030.03011.18
5.2.110.0070.03711.18
5.2.100.0000.03010.98
5.2.90.0000.03711.13
5.2.80.0030.02711.21
5.2.70.0030.06310.99
5.2.60.0030.03010.96
5.2.50.0070.05310.93
5.2.40.0100.05310.91
5.2.30.0100.04311.06
5.2.20.0030.06711.02
5.2.10.0100.05310.77
5.2.00.0100.05310.65
5.1.60.0100.0439.99
5.1.50.0030.03010.00
5.1.40.0070.03710.01
5.1.30.0100.04310.39
5.1.20.0070.03010.41
5.1.10.0070.05010.10
5.1.00.0070.04710.08
5.0.50.0000.0439.22
5.0.40.0100.0409.22
5.0.30.0030.0639.22
5.0.20.0030.0379.22
5.0.10.0030.0379.22
5.0.00.0030.0609.22
4.4.90.0000.0179.22
4.4.80.0000.0379.22
4.4.70.0070.0139.22
4.4.60.0070.0339.22
4.4.50.0000.0379.22
4.4.40.0070.0479.22
4.4.30.0000.0379.22
4.4.20.0030.0379.22
4.4.10.0000.0379.22
4.4.00.0030.0579.22
4.3.110.0000.0379.22
4.3.100.0030.0179.22
4.3.90.0000.0309.22
4.3.80.0000.0579.22
4.3.70.0030.0139.22
4.3.60.0000.0179.22
4.3.50.0100.0239.22
4.3.40.0070.0409.22
4.3.30.0070.0279.22
4.3.20.0000.0379.22
4.3.10.0030.0279.22
4.3.00.0000.0279.22

preferences:
50.51 ms | 401 KiB | 5 Q