3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "\u00c5\u00a0koda"; $str = preg_replace("/\\\\u([a-f0-9]{4})/e", "iconv('iso-8859-1','UTF-8',pack('V', hexdec('U$1')))", json_encode($str )); echo $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)
8.3.60.0110.00418.30
8.3.50.0170.00521.09
8.3.40.0070.00718.70
8.3.30.0140.00418.79
8.3.20.0060.00320.29
8.3.10.0080.00023.43
8.3.00.0030.00617.50
8.2.180.0090.00616.50
8.2.170.0070.00722.96
8.2.160.0070.00720.43
8.2.150.0030.00624.18
8.2.140.0030.00624.66
8.2.130.0040.00426.16
8.2.120.0070.00022.24
8.2.110.0080.00020.34
8.2.100.0040.00818.03
8.2.90.0060.00319.09
8.2.80.0080.00017.97
8.2.70.0060.00317.63
8.2.60.0040.00418.03
8.2.50.0090.00018.07
8.2.40.0040.00419.92
8.2.30.0000.00918.05
8.2.20.0050.00217.53
8.2.10.0050.00217.99
8.2.00.0000.00817.73
8.1.280.0110.01125.92
8.1.270.0040.00423.64
8.1.260.0000.01126.35
8.1.250.0070.00028.09
8.1.240.0040.00423.96
8.1.230.0040.00719.05
8.1.220.0000.00717.79
8.1.210.0030.00518.77
8.1.200.0050.00517.22
8.1.190.0000.00816.98
8.1.180.0050.00318.10
8.1.170.0040.00718.65
8.1.160.0080.00022.02
8.1.150.0020.00518.82
8.1.140.0040.00417.34
8.1.130.0000.00717.81
8.1.120.0000.00717.41
8.1.110.0040.00417.33
8.1.100.0060.00317.32
8.1.90.0070.00017.29
8.1.80.0000.00717.26
8.1.70.0070.00017.39
8.1.60.0000.00817.56
8.1.50.0000.00817.47
8.1.40.0070.00017.50
8.1.30.0080.00017.59
8.1.20.0040.00417.46
8.1.10.0000.00817.52
8.1.00.0040.00417.42
8.0.300.0070.00018.77
8.0.290.0000.00716.75
8.0.280.0030.00318.38
8.0.270.0080.00017.17
8.0.260.0030.00318.43
8.0.250.0040.00417.04
8.0.240.0030.00316.94
8.0.230.0040.00416.84
8.0.220.0030.00316.80
8.0.210.0000.00616.87
8.0.200.0000.00616.98
8.0.190.0050.00216.96
8.0.180.0030.00516.99
8.0.170.0000.00816.90
8.0.160.0000.00716.80
8.0.150.0040.00416.68
8.0.140.0000.00716.76
8.0.130.0030.00313.27
8.0.120.0000.00816.93
8.0.110.0070.00016.82
8.0.100.0040.00416.86
8.0.90.0000.00716.79
8.0.80.0070.00716.89
8.0.70.0080.00016.84
8.0.60.0040.00416.79
8.0.50.0020.00516.73
8.0.30.0110.00816.96
8.0.20.0090.01117.40
8.0.10.0040.00417.04
8.0.00.0090.00816.77
7.4.330.0050.00015.00
7.4.320.0030.00316.55
7.4.300.0050.00216.54
7.4.290.0040.00416.57
7.4.280.0040.00316.31
7.4.270.0030.00316.44
7.4.260.0000.00916.49
7.4.250.0080.00016.32
7.4.240.0050.00216.42
7.4.230.0000.00716.32
7.4.220.0030.01716.57
7.4.210.0050.01016.60
7.4.200.0030.00516.53
7.4.160.0130.00316.46
7.4.150.0090.01217.40
7.4.140.0090.00917.86
7.4.130.0120.00516.38
7.4.120.0080.00916.43
7.4.110.0100.01016.52
7.4.100.0080.01116.36
7.4.90.0120.00916.38
7.4.80.0030.01619.39
7.4.70.0090.01216.31
7.4.60.0090.00616.25
7.4.50.0060.00316.48
7.4.40.0120.00916.41
7.4.30.0130.00916.60
7.4.00.0060.00814.63
7.3.330.0030.00313.13
7.3.320.0000.00612.94
7.3.310.0070.00016.08
7.3.300.0040.00416.17
7.3.290.0070.00716.24
7.3.280.0090.00616.24
7.3.270.0110.00717.40
7.3.260.0030.01316.66
7.3.250.0080.01316.38
7.3.240.0100.00716.28
7.3.230.0100.00716.39
7.3.210.0130.00316.21
7.3.200.0070.01319.39
7.3.190.0090.00616.36
7.3.180.0110.00716.46
7.3.170.0090.01316.60
7.3.160.0170.00316.29
7.2.330.0090.00916.86
7.2.320.0110.01116.68
7.2.310.0130.01016.86
7.2.300.0110.00716.67
7.2.290.0000.01816.78
7.2.80.0060.00616.48
7.2.60.0040.01117.15
7.2.00.0000.01319.71
7.1.200.0100.00315.97
7.1.100.0270.00917.59
7.1.70.0000.00817.32
7.1.60.0150.00619.32
7.1.50.0130.01017.17
7.1.00.0030.07722.38
7.0.200.0070.00316.86
7.0.140.0030.07321.98
7.0.90.0330.04019.95
7.0.80.0470.06719.96
7.0.70.0570.07319.88
7.0.60.0470.05719.99
7.0.50.0530.07720.39
7.0.40.0130.07720.12
7.0.30.0070.05020.05
7.0.20.0130.08320.14
7.0.10.0070.05720.05
7.0.00.0130.07320.02
5.6.280.0100.07021.07
5.6.240.0070.07720.59
5.6.230.0270.06020.74
5.6.220.0100.08320.61
5.6.210.0100.04020.63
5.6.200.0130.08721.27
5.6.190.0130.04721.32
5.6.180.0130.07721.33
5.6.170.0030.04321.26
5.6.160.0030.07721.17
5.6.150.0100.06021.14
5.6.140.0130.08321.29
5.6.130.0030.05321.32
5.6.120.0070.08721.18
5.6.110.0070.08021.28
5.6.100.0130.07721.18
5.6.90.0100.08321.19
5.6.80.0130.08320.60
5.6.70.0070.08020.55
5.6.60.0200.06720.56
5.6.50.0030.08020.68
5.6.40.0200.06020.54
5.6.30.0100.03720.47
5.6.20.0070.08020.64
5.6.10.0030.04720.52
5.6.00.0070.07020.63
5.5.380.0100.06720.45
5.5.370.0070.04020.41
5.5.360.0200.07020.33
5.5.350.0070.08020.41
5.5.340.0100.08320.89
5.5.330.0170.08020.92
5.5.320.0200.06720.93
5.5.310.0100.05020.97
5.5.300.0070.08320.98
5.5.290.0130.08320.93
5.5.280.0070.05721.05
5.5.270.0030.08321.07
5.5.260.0130.08321.00
5.5.250.0100.08020.83
5.5.240.0100.04720.29
5.5.230.0030.08320.31
5.5.220.0100.05720.42
5.5.210.0070.05720.40
5.5.200.0130.06020.22
5.5.190.0130.06720.43
5.5.180.0130.06020.44
5.5.160.0070.06720.39
5.5.150.0100.07020.23
5.5.140.0030.07020.26
5.5.130.0100.07720.29
5.5.120.0070.08020.33
5.5.110.0000.05720.37
5.5.100.0100.07320.23
5.5.90.0100.07720.22
5.5.80.0100.07020.09
5.5.70.0030.08320.24
5.5.60.0100.07320.21
5.5.50.0000.07720.21
5.5.40.0000.05020.15
5.5.30.0030.08320.20
5.5.20.0200.05320.20
5.5.10.0100.08020.18
5.5.00.0070.06720.29
5.4.450.0070.08719.56
5.4.440.0030.08719.31
5.4.430.0100.08319.57
5.4.420.0100.08319.73
5.4.410.0070.08319.51
5.4.400.0100.07719.30
5.4.390.0170.07319.20
5.4.380.0100.07719.09
5.4.370.0070.07719.08
5.4.360.0070.04318.96
5.4.350.0000.05319.20
5.4.340.0100.04019.21
5.4.320.0070.04319.24
5.4.310.0070.07319.30
5.4.300.0130.07019.29
5.4.290.0170.07019.14
5.4.280.0100.07718.95
5.4.270.0070.07719.20
5.4.260.0130.07718.96
5.4.250.0170.06718.98
5.4.240.0030.08319.21
5.4.230.0100.06319.13
5.4.220.0100.06719.07
5.4.210.0000.05318.95
5.4.200.0000.08319.24
5.4.190.0070.07019.28
5.4.180.0100.07319.29
5.4.170.0100.07019.21
5.4.160.0130.07019.30
5.4.150.0070.05719.19
5.4.140.0130.06716.55
5.4.130.0100.07016.55
5.4.120.0030.04316.53
5.4.110.0030.06316.54
5.4.100.0100.07316.67
5.4.90.0130.06316.57
5.4.80.0030.08016.57
5.4.70.0070.04316.54
5.4.60.0070.06716.51
5.4.50.0030.05316.60
5.4.40.0030.06316.44
5.4.30.0130.06316.40
5.4.20.0100.07016.43
5.4.10.0070.04716.42
5.4.00.0070.03315.90
5.3.290.0000.08714.83
5.3.280.0130.04014.76
5.3.270.0130.06714.66
5.3.260.0070.08014.69
5.3.250.0070.04714.79
5.3.240.0070.07714.72
5.3.230.0000.04714.77
5.3.220.0030.06014.66
5.3.210.0130.05314.69
5.3.200.0100.06714.61
5.3.190.0000.05714.75
5.3.180.0070.07314.56
5.3.170.0100.06714.67
5.3.160.0030.04314.68
5.3.150.0070.07714.56
5.3.140.0070.07314.72
5.3.130.0100.07314.72
5.3.120.0100.07714.64
5.3.110.0100.04714.73
5.3.100.0070.06714.21
5.3.90.0000.05714.06
5.3.80.0100.05314.19
5.3.70.0000.04714.05
5.3.60.0070.07314.16
5.3.50.0100.07713.90
5.3.40.0100.06314.13
5.3.30.0100.03713.91
5.3.20.0070.06713.86
5.3.10.0130.04313.70
5.3.00.0030.04713.84
5.2.170.0070.06711.31
5.2.160.0000.07311.34
5.2.150.0030.05711.38
5.2.140.0030.04711.30
5.2.130.0070.06011.20
5.2.120.0100.03311.11
5.2.110.0100.05311.27
5.2.100.0000.05011.22
5.2.90.0100.05311.09
5.2.80.0030.03311.12
5.2.70.0100.06311.28
5.2.60.0000.05311.23
5.2.50.0070.05710.98
5.2.40.0030.03311.13
5.2.30.0000.04310.99
5.2.20.0170.04010.97
5.2.10.0030.06311.05
5.2.00.0130.05010.89
5.1.60.0070.05310.00
5.1.50.0070.0539.97
5.1.40.0030.05010.00
5.1.30.0170.03710.38
5.1.20.0000.04010.40
5.1.10.0030.06010.14
5.1.00.0070.04010.08
5.0.50.0130.0308.53
5.0.40.0070.0438.39
5.0.30.0000.0608.25
5.0.20.0070.0438.28
5.0.10.0000.0478.22
5.0.00.0030.0538.23
4.4.90.0030.0337.48
4.4.80.0030.0207.48
4.4.70.0000.0337.48
4.4.60.0000.0307.48
4.4.50.0000.0207.48
4.4.40.0000.0407.48
4.4.30.0000.0277.48
4.4.20.0030.0277.48
4.4.10.0000.0407.48
4.4.00.0030.0407.48
4.3.110.0000.0377.48
4.3.100.0070.0307.48
4.3.90.0130.0207.48
4.3.80.0000.0377.48
4.3.70.0030.0207.48
4.3.60.0070.0337.48
4.3.50.0070.0337.48
4.3.40.0000.0537.48
4.3.30.0030.0377.48
4.3.20.0070.0337.48
4.3.10.0030.0207.48
4.3.00.0000.0337.48

preferences:
41.6 ms | 401 KiB | 5 Q