3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(json_encode("this is a string"));

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)
8.3.60.0080.00616.50
8.3.50.0090.01021.96
8.3.40.0110.00718.42
8.3.30.0100.00318.82
8.3.20.0000.00720.16
8.3.10.0080.00023.48
8.3.00.0040.00419.07
8.2.180.0110.00418.04
8.2.170.0100.00722.96
8.2.160.0070.01420.52
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0000.00820.86
8.2.110.0030.00622.16
8.2.100.0070.00717.78
8.2.90.0070.00019.09
8.2.80.0080.00017.97
8.2.70.0000.00917.38
8.2.60.0030.00617.68
8.2.50.0090.00318.07
8.2.40.0080.00019.88
8.2.30.0040.00418.17
8.2.20.0030.00617.50
8.2.10.0070.00017.92
8.2.00.0000.00717.45
8.1.280.0140.00725.92
8.1.270.0040.00423.80
8.1.260.0000.00826.35
8.1.250.0140.00428.09
8.1.240.0060.00323.73
8.1.230.0040.00819.09
8.1.220.0000.00717.74
8.1.210.0030.00618.77
8.1.200.0060.00317.23
8.1.190.0000.00917.23
8.1.180.0040.00418.10
8.1.170.0030.00518.21
8.1.160.0040.00421.90
8.1.150.0040.00418.50
8.1.140.0040.00417.32
8.1.130.0030.00317.66
8.1.120.0030.00417.32
8.1.110.0030.00617.31
8.1.100.0030.00517.23
8.1.90.0030.00417.28
8.1.80.0060.00317.38
8.1.70.0040.00417.22
8.1.60.0030.00617.45
8.1.50.0040.00417.24
8.1.40.0050.00317.41
8.1.30.0050.00317.56
8.1.20.0030.00617.35
8.1.10.0040.00417.27
8.1.00.0000.00817.29
8.0.300.0040.00418.77
8.0.290.0050.00317.05
8.0.280.0030.00318.32
8.0.270.0040.00417.01
8.0.260.0000.00617.05
8.0.250.0030.00316.83
8.0.240.0000.00716.75
8.0.230.0060.00316.83
8.0.220.0000.00716.79
8.0.210.0080.00016.79
8.0.200.0000.00616.70
8.0.190.0000.00716.77
8.0.180.0000.00816.75
8.0.170.0000.00816.80
8.0.160.0030.00316.74
8.0.150.0030.00316.70
8.0.140.0080.00016.70
8.0.130.0030.00313.21
8.0.120.0050.00316.70
8.0.110.0030.00316.65
8.0.100.0030.00516.77
8.0.90.0000.00716.85
8.0.80.0040.01116.73
8.0.70.0000.00716.86
8.0.60.0070.00016.71
8.0.50.0040.00416.74
8.0.30.0140.00817.04
8.0.20.0130.00517.40
8.0.10.0080.00016.87
8.0.00.0080.01216.70
7.4.330.0020.00215.00
7.4.320.0040.00216.36
7.4.300.0000.00716.35
7.4.290.0000.00716.34
7.4.280.0030.00316.49
7.4.270.0050.00216.39
7.4.260.0030.00316.43
7.4.250.0040.00416.46
7.4.240.0030.00316.43
7.4.230.0000.00716.49
7.4.220.0080.01016.39
7.4.210.0080.00716.36
7.4.200.0040.00416.35
7.4.190.0000.00716.62
7.4.160.0080.00816.59
7.4.150.0030.01317.40
7.4.140.0140.00317.86
7.4.130.0070.00916.33
7.4.120.0040.01416.39
7.4.110.0070.01016.30
7.4.100.0140.00316.24
7.4.90.0000.01716.25
7.4.80.0060.01119.39
7.4.70.0070.01016.32
7.4.60.0070.01016.40
7.4.50.0060.00316.23
7.4.40.0060.01116.38
7.4.30.0090.01016.31
7.4.00.0060.00614.84
7.3.330.0070.00012.92
7.3.320.0020.00213.05
7.3.310.0030.00316.23
7.3.300.0000.00815.99
7.3.290.0030.01216.16
7.3.280.0090.00916.15
7.3.270.0030.01517.40
7.3.260.0140.00316.32
7.3.250.0070.01016.18
7.3.240.0130.00316.36
7.3.230.0110.00516.39
7.3.210.0060.01216.22
7.3.200.0100.01319.39
7.3.190.0110.01116.06
7.3.180.0120.00416.16
7.3.170.0140.00316.30
7.3.160.0040.01116.25
7.3.120.0070.01014.46
7.3.110.0060.00914.30
7.3.100.0120.00314.83
7.3.90.0040.01114.48
7.3.80.0040.01114.95
7.3.70.0060.00314.62
7.3.60.0100.00314.68
7.3.50.0060.00914.58
7.3.40.0150.00014.48
7.3.30.0040.01114.43
7.3.20.0160.00016.54
7.3.10.0090.00616.30
7.3.00.0110.00316.49
7.2.330.0100.01016.42
7.2.320.0030.01716.28
7.2.310.0090.00916.36
7.2.300.0100.00616.13
7.2.290.0100.01016.41
7.2.240.0060.00915.04
7.2.230.0100.00714.84
7.2.220.0160.00014.89
7.2.210.0100.00614.86
7.2.200.0030.01314.66
7.2.190.0040.00714.75
7.2.180.0040.01114.98
7.2.170.0150.00014.96
7.2.160.0030.00914.82
7.2.150.0000.01216.66
7.2.140.0000.01716.57
7.2.130.0110.00716.78
7.2.120.0070.01016.88
7.2.110.0070.01016.63
7.2.100.0090.00616.78
7.2.90.0000.01216.67
7.2.80.0100.00616.68
7.2.70.0040.01216.75
7.2.60.0060.00816.87
7.2.50.0000.01416.72
7.2.40.0090.00916.81
7.2.30.0090.00016.66
7.2.20.0030.01216.56
7.2.10.0060.00916.69
7.2.00.0040.01017.83
7.1.330.0040.01115.75
7.1.320.0030.01015.53
7.1.310.0100.00315.63
7.1.300.0040.01115.79
7.1.290.0060.00615.62
7.1.280.0090.00315.55
7.1.270.0110.00415.59
7.1.260.0030.00615.64
7.1.250.0120.00415.73
7.1.200.0030.00715.60
7.1.100.0030.00818.07
7.1.70.0040.00416.74
7.1.60.0000.01519.46
7.1.50.0200.01734.43
7.1.00.0000.08022.48
7.0.200.0070.00316.57
7.0.140.0030.07321.99
7.0.90.0530.05719.87
7.0.80.0530.08719.88
7.0.70.0470.09019.85
7.0.60.0530.04719.83
7.0.50.0500.04320.38
7.0.40.0100.03720.08
7.0.30.0170.07319.95
7.0.20.0100.05720.06
7.0.10.0100.06719.99
7.0.00.0100.08020.09
5.6.280.0000.07721.06
5.6.240.0100.08320.72
5.6.230.0130.04720.64
5.6.220.0100.07320.66
5.6.210.0070.08020.45
5.6.200.0130.08020.96
5.6.190.0170.07021.02
5.6.180.0130.04320.95
5.6.170.0070.06021.04
5.6.160.0000.09020.88
5.6.150.0100.04721.16
5.6.140.0130.07320.93
5.6.130.0030.05020.95
5.6.120.0100.08320.94
5.6.110.0070.07021.02
5.6.100.0100.07020.92
5.6.90.0070.08020.99
5.6.80.0130.07020.36
5.6.70.0100.04720.31
5.6.60.0070.08320.40
5.6.50.0100.07720.43
5.6.40.0030.04020.31
5.6.30.0030.04020.36
5.6.20.0100.03320.43
5.6.10.0200.06320.39
5.6.00.0030.04020.36
5.5.380.0070.04320.38
5.5.370.0000.06320.41
5.5.360.0000.09320.33
5.5.350.0030.06020.41
5.5.340.0070.05720.73
5.5.330.0030.04720.85
5.5.320.0100.07720.85
5.5.310.0070.04320.79
5.5.300.0100.08320.88
5.5.290.0030.08720.88
5.5.280.0100.08320.82
5.5.270.0100.08320.81
5.5.260.0070.05320.91
5.5.250.0100.05320.69
5.5.240.0130.05320.20
5.5.230.0070.07720.28
5.5.220.0100.05020.17
5.5.210.0130.05320.27
5.5.200.0030.04020.21
5.5.190.0000.04320.10
5.5.180.0070.04320.22
5.5.160.0070.03720.23
5.5.150.0070.03320.12
5.5.140.0070.05020.10
5.5.130.0030.03020.12
5.5.120.0100.03320.17
5.5.110.0030.04020.17
5.5.100.0130.03320.11
5.5.90.0030.04720.14
5.5.80.0030.03720.12
5.5.70.0100.06020.05
5.5.60.0000.04020.05
5.5.50.0000.04020.13
5.5.40.0030.05320.10
5.5.30.0000.05320.13
5.5.20.0030.04020.04
5.5.10.0030.04020.00
5.5.00.0070.03720.05
5.4.450.0130.04319.11
5.4.440.0070.04019.44
5.4.430.0200.06319.37
5.4.420.0030.08019.49
5.4.410.0070.08019.24
5.4.400.0100.07319.07
5.4.390.0030.05019.06
5.4.380.0030.05318.78
5.4.370.0170.06018.90
5.4.360.0130.07018.83
5.4.350.0070.03318.81
5.4.340.0070.03719.07
5.4.320.0030.05018.90
5.4.310.0070.03719.10
5.4.300.0030.03718.90
5.4.290.0000.03319.09
5.4.280.0000.04019.05
5.4.270.0070.04318.81
5.4.260.0100.05719.02
5.4.250.0030.04018.95
5.4.240.0030.03718.80
5.4.230.0070.03719.09
5.4.220.0000.04018.95
5.4.210.0000.04019.02
5.4.200.0070.05318.80
5.4.190.0030.03718.80
5.4.180.0000.04018.97
5.4.170.0030.04018.96
5.4.160.0070.03719.01
5.4.150.0030.04718.78
5.4.140.0030.03016.20
5.4.130.0070.03316.23
5.4.120.0030.03316.07
5.4.110.0030.04016.23
5.4.100.0070.04716.44
5.4.90.0000.03716.43
5.4.80.0030.03716.16
5.4.70.0030.03316.24
5.4.60.0030.03316.33
5.4.50.0030.03316.18
5.4.40.0030.03716.34
5.4.30.0030.03316.39
5.4.20.0000.04016.37
5.4.10.0070.03016.30
5.4.00.0000.03315.77
5.3.290.0000.04014.64
5.3.280.0070.03014.59
5.3.270.0030.03714.59
5.3.260.0070.04014.58
5.3.250.0000.04014.58
5.3.240.0100.02714.44
5.3.230.0070.03714.57
5.3.220.0000.05714.42
5.3.210.0030.04314.55
5.3.200.0070.02714.56
5.3.190.0070.03714.54
5.3.180.0000.04014.39
5.3.170.0030.04014.46
5.3.160.0000.05314.42
5.3.150.0030.03714.54
5.3.140.0030.03714.54
5.3.130.0100.03714.53
5.3.120.0030.06314.53
5.3.110.0030.04014.38
5.3.100.0070.07013.89
5.3.90.0100.05313.83
5.3.80.0100.06014.00
5.3.70.0000.06013.97
5.3.60.0130.06713.98
5.3.50.0000.07013.95
5.3.40.0000.05713.79
5.3.30.0000.05013.77
5.3.20.0070.06713.62
5.3.10.0000.04313.51
5.3.00.0130.06713.57
5.2.170.0070.06711.13
5.2.160.0070.04311.17
5.2.150.0030.06311.10
5.2.140.0070.04011.18
5.2.130.0030.04311.15
5.2.120.0000.03310.92
5.2.110.0030.06011.01
5.2.100.0030.03711.16
5.2.90.0100.02710.93
5.2.80.0100.06011.14
5.2.70.0000.04711.16
5.2.60.0030.03311.09
5.2.50.0030.05010.86
5.2.40.0030.06710.90
5.2.30.0070.05010.79
5.2.20.0030.03010.80
5.2.10.0030.06310.71
5.2.00.0030.05010.57
5.1.60.0000.04310.03
5.1.50.0100.05010.05
5.1.40.0100.0479.98
5.1.30.0030.05710.24
5.1.20.0100.05310.41
5.1.10.0030.04310.13
5.1.00.0030.03710.14
5.0.50.0030.0378.39
5.0.40.0100.0378.23
5.0.30.0100.0638.20
5.0.20.0030.0478.22
5.0.10.0070.0438.22
5.0.00.0070.0608.18
4.4.90.0070.0137.32
4.4.80.0000.0207.32
4.4.70.0100.0307.32
4.4.60.0000.0237.32
4.4.50.0030.0337.32
4.4.40.0030.0577.32
4.4.30.0000.0307.32
4.4.20.0000.0277.32
4.4.10.0030.0337.32
4.4.00.0000.0407.32
4.3.110.0030.0377.32
4.3.100.0030.0237.32
4.3.90.0030.0277.32
4.3.80.0030.0437.32
4.3.70.0000.0277.32
4.3.60.0030.0307.32
4.3.50.0000.0237.32
4.3.40.0000.0277.32
4.3.30.0000.0177.32
4.3.20.0000.0377.32
4.3.10.0000.0307.32
4.3.00.0030.0337.32

preferences:
41.57 ms | 400 KiB | 5 Q