3v4l.org

run code in 300+ PHP versions simultaneously
<?php $json = array( "Sample" => array( "context" => "Comment appelle-t-on un petit morceau de pain long et fin que l'on trempe dans un \u0153uf \u00e0 la coque?" ) ); return preg_replace("/\\\\u([a-f0-9]{4})/e", "iconv('UCS-4LE','UTF-8',pack('V', hexdec('U$1')))", json_encode($json));

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)
8.3.40.0110.00418.72
8.3.30.0070.01119.08
8.3.20.0040.00420.25
8.3.10.0040.00423.71
8.3.00.0040.00419.13
8.2.170.0100.01022.96
8.2.160.0140.00020.34
8.2.150.0080.00024.18
8.2.140.0000.00724.66
8.2.130.0070.00026.16
8.2.120.0000.00721.09
8.2.110.0050.00322.08
8.2.100.0080.00317.72
8.2.90.0080.00019.05
8.2.80.0060.00317.97
8.2.70.0040.00417.63
8.2.60.0030.00617.91
8.2.50.0000.00918.07
8.2.40.0050.00318.03
8.2.30.0040.00418.07
8.2.20.0000.00817.77
8.2.10.0040.00417.98
8.2.00.0000.00817.59
8.1.270.0030.00623.84
8.1.260.0000.00726.35
8.1.250.0020.00528.09
8.1.240.0000.00923.64
8.1.230.0110.00019.21
8.1.220.0050.00317.74
8.1.210.0030.00618.77
8.1.200.0100.00017.23
8.1.190.0060.00317.23
8.1.180.0060.00318.10
8.1.170.0000.00818.46
8.1.160.0040.00421.96
8.1.150.0040.00418.77
8.1.140.0050.00317.30
8.1.130.0000.00717.89
8.1.120.0050.00217.29
8.1.110.0080.00017.28
8.1.100.0070.00017.43
8.1.90.0000.00717.39
8.1.80.0040.00417.38
8.1.70.0000.00717.35
8.1.60.0030.00717.41
8.1.50.0000.00817.43
8.1.40.0070.00017.34
8.1.30.0040.00417.52
8.1.20.0080.00017.58
8.1.10.0040.00417.51
8.1.00.0040.00417.27
8.0.300.0000.00818.77
8.0.290.0070.00016.75
8.0.280.0000.00718.29
8.0.270.0040.00417.07
8.0.260.0000.00617.24
8.0.250.0000.00716.88
8.0.240.0040.00717.00
8.0.230.0000.00716.96
8.0.220.0040.00416.86
8.0.210.0070.00016.96
8.0.200.0040.00416.99
8.0.190.0070.00016.96
8.0.180.0030.00316.93
8.0.170.0080.00016.88
8.0.160.0030.00316.84
8.0.150.0040.00416.93
8.0.140.0040.00416.84
8.0.130.0030.00413.32
8.0.120.0040.00416.77
8.0.110.0080.00016.84
8.0.100.0040.00416.87
8.0.90.0000.00716.68
8.0.80.0000.01416.90
8.0.70.0060.00316.77
8.0.60.0040.00416.71
8.0.50.0060.00316.91
8.0.30.0090.01016.92
8.0.20.0040.01517.40
8.0.10.0000.00816.88
8.0.00.0100.01216.80
7.4.330.0000.00615.00
7.4.320.0000.00616.51
7.4.300.0000.00616.54
7.4.290.0040.00416.44
7.4.280.0000.00816.35
7.4.270.0000.00716.37
7.4.260.0000.00816.54
7.4.250.0000.00716.41
7.4.240.0000.00716.48
7.4.230.0040.00416.46
7.4.220.0180.00616.57
7.4.210.0060.01216.58
7.4.200.0070.00016.47
7.4.160.0070.01416.20
7.4.150.0090.00917.40
7.4.140.0100.00717.86
7.4.130.0100.00716.43
7.4.120.0070.01016.52
7.4.110.0130.00316.32
7.4.100.0090.00916.46
7.4.90.0100.01016.53
7.4.80.0140.01019.39
7.4.70.0040.01616.64
7.4.60.0090.00616.39
7.4.50.0020.00216.23
7.4.40.0000.01616.62
7.4.30.0060.01016.47
7.4.00.0070.01114.70
7.3.330.0000.00613.13
7.3.320.0000.00513.04
7.3.310.0030.00316.04
7.3.300.0070.00016.18
7.3.290.0070.00716.25
7.3.280.0080.00916.20
7.3.270.0090.01717.40
7.3.260.0060.01016.25
7.3.250.0100.00716.30
7.3.240.0180.00416.25
7.3.230.0140.00716.39
7.3.210.0140.00416.20
7.3.200.0070.01619.39
7.3.190.0060.01616.25
7.3.180.0060.00916.25
7.3.170.0130.00316.39
7.3.160.0060.00916.39
7.2.330.0160.00316.53
7.2.320.0100.01316.59
7.2.310.0060.01216.61
7.2.300.0070.01016.56
7.2.290.0100.00716.66
7.2.60.0040.00716.91
7.1.200.0070.00315.90
7.1.70.0000.00817.16
7.1.60.0130.01019.40
7.1.50.0120.00634.73
7.1.00.0030.07322.28
7.0.200.0000.00916.94
7.0.140.0070.07322.12
7.0.90.0370.05719.89
7.0.80.0200.07719.92
7.0.70.0200.06719.86
7.0.60.0200.06020.07
7.0.50.0170.05720.34
7.0.40.0030.08320.05
7.0.30.0030.08020.13
7.0.20.0070.06020.09
7.0.10.0130.07019.95
7.0.00.0030.08720.13
5.6.280.0030.07721.14
5.6.240.0030.08320.64
5.6.230.0000.09020.71
5.6.220.0130.07320.49
5.6.210.0100.08720.66
5.6.200.0070.09021.09
5.6.190.0070.07721.17
5.6.180.0100.05021.13
5.6.170.0130.05321.08
5.6.160.0100.08721.16
5.6.150.0100.08021.24
5.6.140.0270.06021.23
5.6.130.0200.03721.18
5.6.120.0100.04021.13
5.6.110.0070.08021.14
5.6.100.0170.07021.14
5.6.90.0130.08021.13
5.6.80.0070.07720.58
5.6.70.0130.07320.64
5.6.60.0030.08320.46
5.6.50.0070.05720.60
5.6.40.0070.08320.57
5.6.30.0170.06020.55
5.6.20.0130.05720.53
5.6.10.0100.05020.49
5.6.00.0100.07720.57
5.5.380.0100.05720.45
5.5.370.0070.05020.49
5.5.360.0100.07720.40
5.5.350.0070.07720.47
5.5.340.0170.04021.05
5.5.330.0100.08020.91
5.5.320.0130.07321.05
5.5.310.0100.07021.05
5.5.300.0070.06021.04
5.5.290.0170.07320.86
5.5.280.0030.09020.82
5.5.270.0100.08320.89
5.5.260.0170.06020.76
5.5.250.0130.04320.81
5.5.240.0300.06020.43
5.5.230.0070.07020.38
5.5.220.0130.05720.38
5.5.210.0100.08020.34
5.5.200.0170.05320.13
5.5.190.0130.05320.34
5.5.180.0100.08020.33
5.5.160.0170.07720.40
5.5.150.0100.07720.31
5.5.140.0030.05720.30
5.5.130.0030.05020.30
5.5.120.0200.06020.35
5.5.110.0100.07720.38
5.5.100.0100.07720.27
5.5.90.0070.08020.20
5.5.80.0070.05020.26
5.5.70.0030.08320.22
5.5.60.0000.08320.22
5.5.50.0070.05720.18
5.5.40.0000.08020.28
5.5.30.0100.06720.08
5.5.20.0030.05020.02
5.5.10.0070.04020.23
5.5.00.0170.06320.07
5.4.450.0030.04719.51
5.4.440.0000.07319.45
5.4.430.0100.08019.60
5.4.420.0070.08019.55
5.4.410.0070.08019.16
5.4.400.0100.07719.39
5.4.390.0030.08019.18
5.4.380.0170.06319.19
5.4.370.0070.07319.39
5.4.360.0070.08019.03
5.4.350.0200.06719.20
5.4.340.0130.06319.13
5.4.320.0030.08019.14
5.4.310.0000.08019.30
5.4.300.0070.05019.21
5.4.290.0130.06019.12
5.4.280.0070.08019.27
5.4.270.0070.04019.39
5.4.260.0070.07319.23
5.4.250.0130.04719.26
5.4.240.0100.07319.25
5.4.230.0000.08319.05
5.4.220.0070.04019.22
5.4.210.0030.08019.18
5.4.200.0030.07319.18
5.4.190.0100.06019.26
5.4.180.0070.06018.95
5.4.170.0130.07319.18
5.4.160.0130.05019.09
5.4.150.0030.08018.92
5.4.140.0000.08716.50
5.4.130.0070.07316.46
5.4.120.0070.04316.49
5.4.110.0070.04316.45
5.4.100.0000.04016.55
5.4.90.0200.06316.59
5.4.80.0130.03316.50
5.4.70.0100.06716.54
5.4.60.0100.06716.50
5.4.50.0070.06716.63
5.4.40.0000.04016.54
5.4.30.0070.05016.54
5.4.20.0170.06316.56
5.4.10.0100.07716.62
5.4.00.0100.04315.98
5.3.290.0170.07014.68
5.3.280.0030.06714.75
5.3.270.0000.06314.61
5.3.260.0170.07314.77
5.3.250.0000.07714.77
5.3.240.0070.08014.76
5.3.230.0070.08014.73
5.3.220.0130.06714.68
5.3.210.0130.07014.71
5.3.200.0100.07014.66
5.3.190.0070.04314.68
5.3.180.0130.06014.63
5.3.170.0070.04714.59
5.3.160.0070.07314.70
5.3.150.0130.03714.63
5.3.140.0070.04714.72
5.3.130.0070.04714.56
5.3.120.0000.07314.67
5.3.110.0000.05714.62
5.3.100.0000.04714.19
5.3.90.0070.07714.04
5.3.80.0100.08014.03
5.3.70.0100.06713.94
5.3.60.0130.07014.07
5.3.50.0100.04013.96
5.3.40.0070.07713.96
5.3.30.0100.07713.84
5.3.20.0100.06013.84
5.3.10.0070.04013.67
5.3.00.0170.05713.75
5.2.170.0030.03711.26
5.2.160.0070.06011.26
5.2.150.0070.03311.31
5.2.140.0070.03011.36
5.2.130.0070.07011.33
5.2.120.0070.05311.30
5.2.110.0030.03311.20
5.2.100.0030.03711.25
5.2.90.0100.03711.09
5.2.80.0000.04011.21
5.2.70.0100.03011.30
5.2.60.0030.06311.24
5.2.50.0070.05710.99
5.2.40.0070.03011.07
5.2.30.0000.05711.16
5.2.20.0070.06011.14
5.2.10.0070.03011.07
5.2.00.0000.06310.86
5.1.60.0030.0239.99
5.1.50.0030.0609.84
5.1.40.0030.0539.81
5.1.30.0000.05710.28
5.1.20.0070.04710.41
5.1.10.0030.05310.14
5.1.00.0030.04710.13
5.0.50.0000.0379.79
5.0.40.0070.0379.79
5.0.30.0000.0639.79
5.0.20.0030.0479.79
5.0.10.0030.0479.79
5.0.00.0000.0739.79
4.4.90.0030.0179.79
4.4.80.0030.0309.79
4.4.70.0000.0409.79
4.4.60.0030.0339.79
4.4.50.0030.0239.79
4.4.40.0070.0479.79
4.4.30.0030.0379.79
4.4.20.0070.0309.79
4.4.10.0070.0339.79
4.4.00.0100.0479.79
4.3.110.0000.0179.79
4.3.100.0070.0279.79
4.3.90.0000.0379.79
4.3.80.0030.0509.79
4.3.70.0030.0279.79
4.3.60.0070.0339.79
4.3.50.0000.0279.79
4.3.40.0000.0379.79
4.3.30.0000.0379.79
4.3.20.0000.0339.79
4.3.10.0000.0379.79
4.3.00.0000.0279.79

preferences:
38.21 ms | 400 KiB | 5 Q