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)
8.3.60.0040.01016.50
8.3.50.0090.01221.82
8.3.40.0060.00918.74
8.3.30.0110.00419.04
8.3.20.0070.00020.07
8.3.10.0080.00023.71
8.3.00.0050.00319.19
8.2.180.0110.00418.66
8.2.170.0110.00422.96
8.2.160.0140.00020.21
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0070.00022.13
8.2.110.0060.00319.30
8.2.100.0060.00617.91
8.2.90.0080.00019.09
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0080.00018.04
8.2.50.0080.00018.10
8.2.40.0080.00019.84
8.2.30.0070.00018.22
8.2.20.0040.00417.74
8.2.10.0040.00418.04
8.2.00.0080.00317.61
8.1.280.0120.00325.92
8.1.270.0030.00523.96
8.1.260.0050.00326.35
8.1.250.0070.00028.09
8.1.240.0060.00322.71
8.1.230.0080.00417.52
8.1.220.0060.00317.74
8.1.210.0000.00818.77
8.1.200.0060.00317.35
8.1.190.0030.00617.22
8.1.180.0040.00418.10
8.1.170.0030.00518.41
8.1.160.0040.00422.02
8.1.150.0040.00418.52
8.1.140.0040.00417.38
8.1.130.0000.00717.69
8.1.120.0040.00417.36
8.1.110.0000.00717.21
8.1.100.0000.00717.35
8.1.90.0000.00817.35
8.1.80.0040.00417.40
8.1.70.0030.00517.25
8.1.60.0070.00317.50
8.1.50.0040.00417.46
8.1.40.0030.00617.46
8.1.30.0000.00817.64
8.1.20.0000.00817.54
8.1.10.0070.00017.47
8.1.00.0040.00417.48
8.0.300.0060.00318.77
8.0.290.0000.00816.75
8.0.280.0000.00718.36
8.0.270.0000.00717.25
8.0.260.0070.00017.26
8.0.250.0070.00017.03
8.0.240.0040.00416.84
8.0.230.0040.00416.97
8.0.220.0040.00416.77
8.0.210.0030.00316.85
8.0.200.0000.00716.91
8.0.190.0000.00816.98
8.0.180.0000.00716.81
8.0.170.0000.00816.97
8.0.160.0000.00716.83
8.0.150.0050.00216.80
8.0.140.0030.00416.88
8.0.130.0000.00513.35
8.0.120.0090.00016.81
8.0.110.0000.00816.93
8.0.100.0030.00616.75
8.0.90.0040.00416.95
8.0.80.0140.00616.95
8.0.70.0000.00816.76
8.0.60.0040.00416.77
8.0.50.0070.00016.74
8.0.30.0060.01317.11
8.0.20.0060.01217.40
8.0.10.0080.00017.07
8.0.00.0080.00916.73
7.4.330.0050.00015.00
7.4.320.0030.00316.43
7.4.300.0030.00316.55
7.4.290.0020.00516.48
7.4.280.0000.00716.48
7.4.270.0030.00316.58
7.4.260.0050.00316.43
7.4.250.0040.00416.56
7.4.240.0020.00516.46
7.4.230.0040.00416.50
7.4.220.0070.01116.61
7.4.210.0080.00916.60
7.4.200.0070.00016.57
7.4.190.0000.00716.75
7.4.160.0000.01516.37
7.4.150.0060.01217.40
7.4.140.0100.00717.86
7.4.130.0070.01016.60
7.4.120.0080.00916.36
7.4.110.0090.00616.47
7.4.100.0070.01016.39
7.4.90.0070.01016.68
7.4.80.0100.01019.39
7.4.70.0030.01916.48
7.4.60.0070.01016.39
7.4.50.0030.00616.27
7.4.40.0060.01016.46
7.4.30.0120.00916.68
7.4.00.0070.00814.92
7.3.330.0030.00313.24
7.3.320.0030.00313.26
7.3.310.0000.00716.13
7.3.300.0000.00716.11
7.3.290.0120.00316.25
7.3.280.0060.01216.23
7.3.270.0130.00317.40
7.3.260.0110.00616.46
7.3.250.0120.00616.52
7.3.240.0110.01116.50
7.3.230.0110.00516.42
7.3.210.0150.00616.32
7.3.200.0090.01319.39
7.3.190.0070.01416.27
7.3.180.0100.00716.26
7.3.170.0110.00416.27
7.3.160.0080.00816.27
7.3.120.0070.01014.71
7.3.110.0040.00714.66
7.3.100.0120.00614.76
7.3.90.0000.01914.64
7.3.80.0120.00314.82
7.3.70.0030.00714.90
7.3.60.0040.00714.80
7.3.50.0000.01114.73
7.3.40.0000.01614.59
7.3.30.0100.01014.74
7.3.20.0000.01016.70
7.3.10.0000.01616.52
7.3.00.0090.00616.27
7.2.330.0120.00616.37
7.2.320.0120.00816.61
7.2.310.0120.00916.31
7.2.300.0080.00816.35
7.2.290.0110.00616.41
7.2.250.0090.00914.93
7.2.240.0070.01314.89
7.2.230.0000.01714.93
7.2.220.0090.00914.89
7.2.210.0070.01014.57
7.2.200.0000.01215.12
7.2.190.0180.00014.85
7.2.180.0070.00715.13
7.2.170.0060.00314.89
7.2.60.0090.00316.70
7.2.00.0100.00319.38
7.1.330.0100.00315.86
7.1.320.0030.00615.67
7.1.310.0100.00315.79
7.1.300.0030.01115.59
7.1.290.0090.00615.71
7.1.280.0130.00615.69
7.1.270.0100.00315.71
7.1.260.0050.00515.50
7.1.200.0000.01115.78
7.1.100.0190.00915.90
7.1.70.0030.01217.25
7.1.60.0110.01119.46
7.1.50.0140.01016.89
7.1.00.0030.07722.32
7.0.200.0080.00016.84
7.0.140.0100.06722.21
7.0.60.0000.09319.99
7.0.50.0000.04317.95
7.0.40.0070.08320.18
7.0.30.0200.08720.18
7.0.20.0400.07720.33
7.0.10.0070.09020.30
7.0.00.0100.08020.22
5.6.280.0030.07321.07
5.6.210.0100.07720.77
5.6.200.0030.08718.29
5.6.190.0030.04320.42
5.6.180.0200.04020.50
5.6.170.0370.07020.46
5.6.160.0100.08720.55
5.6.150.0100.07318.23
5.6.140.0100.07718.23
5.6.130.0070.08018.13
5.6.120.0030.06721.04
5.6.110.0130.05320.97
5.6.100.0000.09721.14
5.6.90.0170.07321.13
5.6.80.0170.07020.42
5.5.350.0300.07320.36
5.5.340.0100.08017.98
5.5.330.0070.06320.27
5.5.320.0270.05020.28
5.5.310.0300.05320.34
5.5.300.0100.06718.07
5.5.290.0000.06018.03
5.5.280.0100.04720.85
5.5.270.0070.04020.77
5.5.260.0070.05020.92
5.5.250.0070.07020.57
5.5.240.0000.06720.36
5.4.450.3630.04719.39
5.4.440.3500.03319.64
5.4.430.3770.03319.17
5.4.420.3600.03719.52
5.4.410.3600.04319.03
5.4.400.4170.03718.98
5.4.390.2700.04719.22
5.4.380.3970.05019.14
5.4.370.3300.03319.22
5.4.360.3070.03019.15
5.4.350.3500.04019.08
5.4.340.3400.04019.08
5.4.320.3400.03719.08
5.4.310.3270.03319.00
5.4.300.3530.03319.15
5.4.290.3130.03719.21
5.4.280.3270.03719.22
5.4.270.4400.03719.24
5.4.260.3230.03319.06
5.4.250.3600.03018.85
5.4.240.3630.03018.87
5.4.230.3600.03319.21
5.4.220.3230.04019.13
5.4.210.3570.03718.85
5.4.200.3670.03319.14
5.4.190.3500.04019.30
5.4.180.3530.04019.09
5.4.170.3500.04319.21
5.4.160.3270.03719.18
5.4.150.2870.04019.29
5.4.140.3530.02716.50
5.4.130.3570.03016.34
5.4.120.3170.04016.36
5.4.110.3530.03716.45
5.4.100.3330.03316.27
5.4.90.3430.03316.45
5.4.80.3270.04016.53
5.4.70.3300.03716.43
5.4.60.3400.04016.52
5.4.50.3530.03716.39
5.4.40.3330.03016.45
5.4.30.3470.03716.53
5.4.20.3430.03316.33
5.4.10.3430.03716.53
5.4.00.3370.03315.95
5.3.290.3230.03714.78
5.3.280.3500.03714.75
5.3.270.3370.03714.61
5.3.260.3230.03714.50
5.3.250.3330.03714.61
5.3.240.3500.04014.57
5.3.230.3370.03714.49
5.3.220.3570.04014.48
5.3.210.3430.03314.60
5.3.200.3570.03314.79
5.3.190.3770.04014.57
5.3.180.3470.03714.48
5.3.170.3400.04014.78
5.3.160.3470.03714.67
5.3.150.3430.03014.68
5.3.140.3470.03314.57
5.3.130.3270.03314.46
5.3.120.3200.03714.70
5.3.110.4170.03314.66
5.3.100.3500.04314.04
5.3.90.3470.03314.07
5.3.80.3470.04014.02
5.3.70.3630.03014.09
5.3.60.3630.03713.93
5.3.50.3430.03714.11
5.3.40.4130.04013.95
5.3.30.3870.03713.96
5.3.20.4100.03313.77
5.3.10.3500.03713.59
5.3.00.3430.03313.64
5.2.170.2970.02711.36
5.2.160.3130.03011.10
5.2.150.3570.02711.15
5.2.140.3600.02311.14
5.2.130.2730.03311.03
5.2.120.2700.02711.03
5.2.110.2770.03311.15
5.2.100.2900.03311.10
5.2.90.2730.02711.18
5.2.80.2930.03011.17
5.2.70.3030.02711.01
5.2.60.3370.03310.98
5.2.50.3000.02310.97
5.2.40.2370.03011.04
5.2.30.2400.03011.02
5.2.20.2500.02311.04
5.2.10.2130.02710.83
5.2.00.2430.02310.68
5.1.60.2170.0279.92
5.1.50.2400.02710.08
5.1.40.2530.0239.90
5.1.30.2570.02010.41
5.1.20.2570.02710.30
5.1.10.2770.0309.97
5.1.00.2570.0239.97
5.0.50.1700.0208.42
5.0.40.1300.0238.29
5.0.30.1570.0308.11
5.0.20.1570.0238.10
5.0.10.1570.0178.07
5.0.00.1600.0308.09
4.4.90.1370.0177.55
4.4.80.1470.0307.55
4.4.70.1330.0207.55
4.4.60.1170.0207.55
4.4.50.1200.0137.55
4.4.40.1270.0307.55
4.4.30.1370.0137.55
4.4.20.1500.0177.55
4.4.10.1630.0137.55
4.4.00.1570.0307.55
4.3.110.1600.0177.55
4.3.100.1570.0177.55
4.3.90.1600.0207.55
4.3.80.1630.0237.55
4.3.70.1630.0177.55
4.3.60.1470.0177.55
4.3.50.1330.0137.55
4.3.40.1600.0237.55
4.3.30.0730.0107.55
4.3.20.0870.0277.55
4.3.10.0800.0207.55
4.3.00.0870.0277.55

preferences:
53.97 ms | 401 KiB | 5 Q