3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '{"name":"Vanliga fr\u00e5gor"}'; function replace_unicode_escape_sequence($match) { return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE'); } print json_decode($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)
8.3.40.0070.01118.93
8.3.30.0060.00819.01
8.3.20.0040.00420.30
8.3.10.0080.00023.65
8.3.00.0050.00320.95
8.2.170.0140.00022.96
8.2.160.0100.00320.35
8.2.150.0020.00524.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0080.00020.52
8.2.110.0090.00022.25
8.2.100.0070.00417.91
8.2.90.0050.00319.05
8.2.80.0050.00317.97
8.2.70.0030.00517.50
8.2.60.0060.00317.93
8.2.50.0040.00418.07
8.2.40.0070.00417.79
8.2.30.0000.00718.25
8.2.20.0080.00017.68
8.2.10.0030.00517.87
8.2.00.0000.00917.79
8.1.270.0080.00023.82
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0030.00623.82
8.1.230.0100.00019.10
8.1.220.0030.00517.74
8.1.210.0030.00518.77
8.1.200.0030.00617.23
8.1.190.0080.00017.23
8.1.180.0050.00418.10
8.1.170.0000.00818.46
8.1.160.0000.00721.94
8.1.150.0050.00218.44
8.1.140.0040.00417.28
8.1.130.0000.01017.74
8.1.120.0070.00017.47
8.1.110.0080.00017.35
8.1.100.0000.00717.40
8.1.90.0040.00417.41
8.1.80.0040.00417.34
8.1.70.0090.00017.39
8.1.60.0040.00817.46
8.1.50.0040.00417.50
8.1.40.0070.00317.51
8.1.30.0040.00417.54
8.1.20.0000.00817.61
8.1.10.0040.00417.45
8.1.00.0040.00417.36
8.0.300.0020.00520.64
8.0.290.0040.00417.18
8.0.280.0070.00018.31
8.0.270.0040.00317.16
8.0.260.0030.00317.16
8.0.250.0000.00717.03
8.0.240.0060.00316.82
8.0.230.0040.00416.88
8.0.220.0040.00416.89
8.0.210.0000.00716.92
8.0.200.0060.00016.98
8.0.190.0070.00016.84
8.0.180.0040.00416.79
8.0.170.0040.00416.82
8.0.160.0040.00416.86
8.0.150.0030.00316.71
8.0.140.0030.00516.71
8.0.130.0030.00313.30
8.0.120.0060.00316.78
8.0.110.0040.00416.78
8.0.100.0030.00616.91
8.0.90.0000.00716.68
8.0.80.0120.00916.84
8.0.70.0000.00816.78
8.0.60.0050.00216.93
8.0.50.0040.00416.75
8.0.30.0120.00616.94
8.0.20.0120.00717.40
8.0.10.0040.00417.06
8.0.00.0120.00516.98
7.4.330.0050.00015.00
7.4.320.0060.00016.51
7.4.300.0000.00716.49
7.4.290.0000.00716.43
7.4.280.0000.00716.49
7.4.270.0030.00316.62
7.4.260.0040.00416.53
7.4.250.0040.00416.56
7.4.240.0030.00316.48
7.4.230.0000.00716.68
7.4.220.0030.01416.63
7.4.210.0040.00916.55
7.4.200.0040.00416.62
7.4.190.0030.00316.56
7.4.160.0080.00816.38
7.4.150.0030.01417.40
7.4.140.0050.01117.86
7.4.130.0050.01516.48
7.4.120.0110.00816.69
7.4.110.0080.01216.30
7.4.100.0100.00716.70
7.4.90.0070.01016.53
7.4.80.0150.00619.39
7.4.70.0000.01716.66
7.4.60.0130.00616.36
7.4.50.0000.00716.48
7.4.40.0030.01416.59
7.4.30.0130.01016.38
7.4.00.0120.00314.96
7.3.330.0000.00513.26
7.3.320.0000.00513.05
7.3.310.0040.00416.19
7.3.300.0070.00016.09
7.3.290.0140.00716.23
7.3.280.0110.00516.25
7.3.270.0090.01517.40
7.3.260.0040.01316.49
7.3.250.0160.00216.25
7.3.240.0140.00716.45
7.3.230.0090.00916.42
7.3.210.0160.00016.30
7.3.200.0170.00019.39
7.3.190.0110.01116.37
7.3.180.0150.00016.50
7.3.170.0080.00816.38
7.3.160.0040.01216.30
7.3.120.0080.00914.91
7.3.110.0130.00614.91
7.3.100.0040.01114.69
7.3.90.0030.00914.71
7.3.80.0080.00314.79
7.3.70.0060.00314.61
7.3.60.0040.01114.73
7.3.50.0060.00314.67
7.3.40.0070.01014.81
7.3.30.0000.00914.66
7.3.20.0060.00616.66
7.3.10.0030.00916.52
7.3.00.0060.00616.46
7.2.330.0080.00816.31
7.2.320.0130.00916.58
7.2.310.0070.01016.25
7.2.300.0100.01416.27
7.2.290.0110.01116.72
7.2.250.0040.01214.95
7.2.240.0030.01314.97
7.2.230.0070.00414.97
7.2.220.0000.01114.74
7.2.210.0070.01015.02
7.2.200.0030.00714.88
7.2.190.0040.00814.91
7.2.180.0030.00915.01
7.2.170.0060.00914.95
7.2.60.0030.01416.76
7.2.00.0030.00719.31
7.1.330.0070.01015.57
7.1.320.0030.01015.62
7.1.310.0040.00415.86
7.1.300.0030.01015.54
7.1.290.0030.00815.70
7.1.280.0040.01115.63
7.1.270.0070.00415.61
7.1.260.0110.00415.69
7.1.200.0110.00015.65
7.1.100.0000.01317.77
7.1.70.0070.00716.81
7.1.60.0100.01419.46
7.1.50.0070.01416.96
7.1.00.0070.07322.35
7.0.200.0050.00216.56
7.0.140.0000.07321.95
7.0.60.0070.07321.75
7.0.50.0100.07717.87
7.0.40.0100.08720.10
7.0.30.0300.07720.23
7.0.20.0370.06720.11
7.0.10.0070.08720.23
7.0.00.0070.08320.10
5.6.280.0030.07021.11
5.6.210.0000.07320.51
5.6.200.0030.08718.15
5.6.190.0070.09020.61
5.6.180.0300.08320.61
5.6.170.0330.08020.55
5.6.160.0070.08320.55
5.6.150.0030.04318.25
5.6.140.0100.06718.18
5.6.130.0100.08318.24
5.6.120.0030.04721.12
5.6.110.0070.05721.00
5.6.100.0070.07721.04
5.6.90.0130.08321.13
5.6.80.0070.08320.44
5.5.350.4100.03720.41
5.5.340.0030.08317.95
5.5.330.0170.08020.19
5.5.320.0600.07320.30
5.5.310.0200.06720.41
5.5.300.0100.08318.01
5.5.290.0100.07318.08
5.5.280.0170.04320.88
5.5.270.0300.06720.85
5.5.260.0130.07020.84
5.5.250.0100.08720.68
5.5.240.0030.08020.27
5.4.450.3800.03719.50
5.4.440.3970.03019.47
5.4.430.3870.03319.29
5.4.420.3900.03019.29
5.4.410.3800.04019.30
5.4.400.3930.03319.23
5.4.390.3800.04019.17
5.4.380.4000.03719.20
5.4.370.3770.04019.13
5.4.360.3670.03319.13
5.4.350.1100.04019.23
5.4.340.0030.07718.93
5.4.320.4500.03719.06
5.4.310.3670.04019.25
5.4.300.3900.03719.14
5.4.290.4070.03018.98
5.4.280.3770.04719.20
5.4.270.3830.03719.23
5.4.260.3800.04019.15
5.4.250.2170.03719.10
5.4.240.0070.06718.94
5.4.230.4230.03319.10
5.4.220.3630.03718.92
5.4.210.3330.03719.23
5.4.200.4800.03719.06
5.4.190.3470.04019.12
5.4.180.3530.04019.12
5.4.170.3370.03019.25
5.4.160.3600.03318.93
5.4.150.4000.04019.21
5.4.140.3700.03716.43
5.4.130.3930.03016.41
5.4.120.3570.03316.41
5.4.110.3870.03316.63
5.4.100.3870.03316.56
5.4.90.4100.04016.55
5.4.80.3230.02716.50
5.4.70.4070.03016.21
5.4.60.3900.03716.59
5.4.50.4270.02716.42
5.4.40.4430.03716.45
5.4.30.3970.02716.41
5.4.20.3670.03016.45
5.4.10.3670.03716.48
5.4.00.3770.03715.84
5.3.290.3730.04014.82
5.3.280.3370.03314.51
5.3.270.3600.03314.61
5.3.260.3500.03714.66
5.3.250.3730.03314.61
5.3.240.3600.03314.49
5.3.230.3870.04014.74
5.3.220.3770.04314.61
5.3.210.3600.04714.56
5.3.200.3900.03314.58
5.3.190.3830.04014.62
5.3.180.3830.03714.59
5.3.170.3870.04014.65
5.3.160.3870.03714.59
5.3.150.4470.03014.58
5.3.140.3930.03014.55
5.3.130.3570.04014.59
5.3.120.3700.03714.71
5.3.110.3900.03314.54
5.3.100.4770.03014.09
5.3.90.4100.04714.07
5.3.80.3830.04014.03
5.3.70.3770.03714.07
5.3.60.3230.03714.02
5.3.50.3630.03713.99
5.3.40.3600.03714.02
5.3.30.3870.03714.05
5.3.20.4200.04013.72
5.3.10.4170.03313.58
5.3.00.4230.03013.60
5.2.170.3170.02711.29
5.2.160.3300.02311.18
5.2.150.3370.02711.31
5.2.140.3100.03011.30
5.2.130.3800.02711.09
5.2.120.3630.03311.12
5.2.110.3500.02711.13
5.2.100.3430.03011.13
5.2.90.3200.02311.07
5.2.80.3100.03311.14
5.2.70.3570.02710.98
5.2.60.3630.03011.12
5.2.50.3530.03011.17
5.2.40.3030.03311.00
5.2.30.3170.03010.91
5.2.20.2800.03010.97
5.2.10.3000.02710.82
5.2.00.3070.03310.76
5.1.60.3070.02310.04
5.1.50.2570.02710.05
5.1.40.2700.0179.92
5.1.30.3130.02010.39
5.1.20.3100.02710.39
5.1.10.3130.02310.11
5.1.00.2800.0239.98
5.0.50.1770.0238.52
5.0.40.1730.0238.47
5.0.30.1800.0308.22
5.0.20.1730.0238.22
5.0.10.1400.0238.22
5.0.00.1800.0278.21
4.4.90.1630.0136.55
4.4.80.0870.0176.55
4.4.70.1700.0136.55
4.4.60.1730.0176.55
4.4.50.1700.0176.55
4.4.40.1400.0236.55
4.4.30.1270.0206.55
4.4.20.1630.0176.55
4.4.10.1730.0176.55
4.4.00.1900.0306.55
4.3.110.1730.0176.55
4.3.100.1070.0176.55
4.3.90.1670.0176.55
4.3.80.1730.0236.55
4.3.70.1500.0136.55
4.3.60.1530.0136.55
4.3.50.1600.0106.55
4.3.40.1530.0176.55
4.3.30.0700.0176.55
4.3.20.0830.0206.55
4.3.10.0770.0206.55
4.3.00.0930.0206.55

preferences:
42.13 ms | 400 KiB | 5 Q