3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( '0' => array('xxx'), '1' => array('aaa'), '2' => array('bbb'), ); print_r(json_encode($arr));

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)
8.3.60.0160.00318.31
8.3.50.0140.00721.80
8.3.40.0120.00318.64
8.3.30.0110.00318.71
8.3.20.0000.00720.23
8.3.10.0090.00020.53
8.3.00.0040.00419.25
8.2.180.0110.00416.50
8.2.170.0100.01022.96
8.2.160.0120.00318.89
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0070.00022.23
8.2.110.0150.00321.04
8.2.100.0090.00317.72
8.2.90.0000.00819.05
8.2.80.0000.00817.97
8.2.70.0080.00017.50
8.2.60.0000.00817.93
8.2.50.0040.00418.10
8.2.40.0040.00418.03
8.2.30.0040.00419.22
8.2.20.0000.00717.71
8.2.10.0000.00717.85
8.2.00.0090.00017.65
8.1.280.0130.00725.92
8.1.270.0070.00022.05
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0070.00323.96
8.1.230.0080.00317.77
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0040.00417.22
8.1.190.0060.00316.88
8.1.180.0040.00418.10
8.1.170.0030.00518.55
8.1.160.0000.00821.98
8.1.150.0030.00518.81
8.1.140.0050.00217.29
8.1.130.0040.00417.69
8.1.120.0040.00417.38
8.1.110.0040.00417.30
8.1.100.0000.00717.28
8.1.90.0040.00417.41
8.1.80.0000.00817.38
8.1.70.0000.00717.34
8.1.60.0050.00317.54
8.1.50.0000.00817.47
8.1.40.0040.00417.40
8.1.30.0040.00417.61
8.1.20.0000.00717.55
8.1.10.0080.00017.47
8.1.00.0040.00417.38
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0000.00718.32
8.0.270.0030.00317.19
8.0.260.0030.00317.18
8.0.250.0040.00416.74
8.0.240.0040.00416.86
8.0.230.0000.00716.77
8.0.220.0050.00316.69
8.0.210.0030.00316.71
8.0.200.0030.00616.78
8.0.190.0040.00416.75
8.0.180.0000.00716.75
8.0.170.0040.00416.74
8.0.160.0000.00716.82
8.0.150.0000.00716.66
8.0.140.0040.00416.77
8.0.130.0050.00013.28
8.0.120.0080.00016.70
8.0.110.0050.00316.86
8.0.100.0000.00716.80
8.0.90.0050.00316.77
8.0.80.0090.00616.75
8.0.70.0050.00316.76
8.0.60.0040.00416.83
8.0.50.0040.00416.68
8.0.30.0100.01016.99
8.0.20.0150.00317.40
8.0.10.0050.00316.76
8.0.00.0060.01216.66
7.4.330.0030.00315.00
7.4.320.0070.00016.42
7.4.300.0000.00716.51
7.4.290.0000.00716.45
7.4.280.0040.00416.53
7.4.270.0060.00016.42
7.4.260.0060.00016.34
7.4.250.0040.00416.25
7.4.240.0030.00516.45
7.4.230.0030.00316.63
7.4.220.0110.00716.52
7.4.210.0120.00316.35
7.4.200.0040.00416.61
7.4.160.0060.00916.39
7.4.150.0110.00717.40
7.4.140.0090.00917.86
7.4.130.0120.00716.34
7.4.120.0110.00616.48
7.4.110.0030.01316.48
7.4.100.0080.00916.48
7.4.90.0030.01416.43
7.4.80.0030.01319.37
7.4.70.0070.01016.54
7.4.60.0060.01216.61
7.4.50.0040.00416.39
7.4.40.0030.01316.53
7.4.30.0030.01216.39
7.4.00.0070.01114.83
7.3.330.0030.00313.04
7.3.320.0000.00612.89
7.3.310.0070.00016.08
7.3.300.0040.00316.16
7.3.290.0050.00816.16
7.3.280.0060.01316.13
7.3.270.0190.00617.40
7.3.260.0180.00616.41
7.3.250.0140.00516.42
7.3.240.0120.01216.33
7.3.230.0090.01116.39
7.3.210.0070.01016.33
7.3.200.0130.00719.39
7.3.190.0140.00316.18
7.3.180.0090.00616.16
7.3.170.0060.01416.27
7.3.160.0090.00916.09
7.2.330.0080.00816.54
7.2.320.0060.01016.30
7.2.310.0110.00516.18
7.2.300.0180.00416.25
7.2.290.0150.00616.26
7.2.60.0230.00516.56
7.2.00.0100.00319.23
7.1.200.0150.00615.50
7.1.100.0220.01217.48
7.1.70.0040.00417.01
7.1.60.0170.00719.32
7.1.50.0060.00616.73
7.1.00.0030.07722.29
7.0.200.0000.00716.80
7.0.140.0000.07322.05
7.0.90.0030.06019.91
7.0.80.0070.07319.91
7.0.70.0430.04019.93
7.0.60.0300.04719.89
7.0.50.0570.07720.30
7.0.40.0200.07019.99
7.0.30.0170.06320.13
7.0.20.0100.08020.19
7.0.10.0170.07020.10
7.0.00.0130.07320.04
5.6.280.0100.06721.05
5.6.230.0070.05720.50
5.6.220.0070.05020.59
5.6.210.0030.05320.77
5.6.200.0130.04021.08
5.6.190.0100.07721.04
5.6.180.0100.04721.03
5.6.170.0000.04721.10
5.6.160.0000.06321.05
5.6.150.0070.05721.07
5.6.140.0070.06721.02
5.6.130.0070.08321.09
5.6.120.0070.08720.92
5.6.110.0070.05020.94
5.6.100.0000.06321.08
5.6.90.0030.04721.11
5.6.80.0100.07320.39
5.6.70.0100.07320.39
5.6.60.0100.07720.45
5.6.50.0030.07720.47
5.6.40.0030.08020.29
5.6.30.0070.05320.31
5.6.20.0130.05020.38
5.6.10.0070.08320.46
5.6.00.0070.07720.35
5.5.370.0070.04020.34
5.5.360.0100.08720.40
5.5.350.0070.08020.33
5.5.340.0070.08320.92
5.5.330.0170.07720.92
5.5.320.0170.07320.77
5.5.310.0070.04020.89
5.5.300.0070.07320.89
5.5.290.0030.05320.90
5.5.280.0070.07020.63
5.5.270.0030.08720.86
5.5.260.0000.05320.82
5.5.250.0100.07720.57
5.5.240.0070.04720.28
5.5.230.0100.07320.29
5.5.220.0030.08320.16
5.5.210.0130.07020.20
5.5.200.0070.07020.24
5.5.190.0130.06020.17
5.5.180.0000.06020.14
5.5.160.0070.04320.07
5.5.150.0000.08320.22
5.5.140.0200.06720.25
5.5.130.0070.04720.16
5.5.120.0070.05020.21
5.5.110.0070.04720.25
5.5.100.0100.07020.04
5.5.90.0170.07020.14
5.5.80.0130.07020.12
5.5.70.0130.07320.15
5.5.60.0130.06319.99
5.5.50.0030.08320.08
5.5.40.0030.05720.04
5.5.30.0030.04020.07
5.5.20.0070.05020.04
5.5.10.0100.07720.13
5.5.00.0070.07020.04
5.4.450.0130.07019.08
5.4.440.0030.04719.55
5.4.430.0070.05719.36
5.4.420.0030.07719.39
5.4.410.0030.04019.10
5.4.400.0100.07318.82
5.4.390.0070.06018.98
5.4.380.0000.04319.00
5.4.370.0000.08719.06
5.4.360.0170.06318.94
5.4.350.0000.05319.23
5.4.340.0130.07019.12
5.4.320.0100.03318.95
5.4.310.0070.04019.07
5.4.300.0100.03718.97
5.4.290.0030.08019.07
5.4.280.0030.07719.14
5.4.270.0100.03718.78
5.4.260.0070.07019.14
5.4.250.0100.06719.14
5.4.240.0070.07318.94
5.4.230.0100.06319.11
5.4.220.0230.04718.80
5.4.210.0100.07719.16
5.4.200.0070.07719.14
5.4.190.0000.05019.05
5.4.180.0130.07319.13
5.4.170.0030.07318.97
5.4.160.0030.07718.79
5.4.150.0030.08019.01
5.4.140.0070.07716.28
5.4.130.0130.06716.27
5.4.120.0030.05316.33
5.4.110.0070.04316.41
5.4.100.0100.07016.38
5.4.90.0000.07316.44
5.4.80.0070.03716.25
5.4.70.0070.04316.31
5.4.60.0030.07716.40
5.4.50.0000.07316.33
5.4.40.0030.05316.38
5.4.30.0030.07716.39
5.4.20.0030.06016.40
5.4.10.0030.07316.30
5.4.00.0070.05715.77
5.3.290.0070.04014.61
5.3.280.0100.05714.55
5.3.270.0100.07014.54
5.3.260.0000.04714.56
5.3.250.0070.08014.57
5.3.240.0170.06714.42
5.3.230.0130.07014.54
5.3.220.0170.06314.56
5.3.210.0070.08314.42
5.3.200.0070.07014.53
5.3.190.0070.04314.38
5.3.180.0100.07314.49
5.3.170.0070.07314.52
5.3.160.0000.07314.55
5.3.150.0100.07314.56
5.3.140.0200.06014.50
5.3.130.0070.07014.53
5.3.120.0100.06714.53
5.3.110.0100.07014.37
5.3.100.0100.07314.00
5.3.90.0130.06013.84
5.3.80.0030.06713.92
5.3.70.0030.05313.96
5.3.60.0130.06313.95
5.3.50.0170.06313.95
5.3.40.0000.08313.79
5.3.30.0030.04713.90
5.3.20.0030.07313.54
5.3.10.0000.07313.66
5.3.00.0070.06713.49
5.2.170.0070.04711.19
5.2.160.0030.06311.16
5.2.150.0070.06011.06
5.2.140.0000.03311.21
5.2.130.0070.02710.89
5.2.120.0000.04711.09
5.2.110.0030.06711.11
5.2.100.0030.06011.15
5.2.90.0070.06011.06
5.2.80.0070.05011.04
5.2.70.0100.05711.18
5.2.60.0000.04010.91
5.2.50.0070.05311.06
5.2.40.0030.03310.79
5.2.30.0100.05010.80
5.2.20.0030.06310.84
5.2.10.0100.04710.91
5.2.00.0000.05310.66
5.1.60.0030.05310.03
5.1.50.0100.04710.05
5.1.40.0070.05310.05
5.1.30.0000.06010.41
5.1.20.0030.06010.39
5.1.10.0030.05710.13
5.1.00.0030.05710.07
5.0.50.0000.0538.58
5.0.40.0100.0378.45
5.0.30.0000.0678.30
5.0.20.0000.0438.10
5.0.10.0070.0208.24
5.0.00.0030.0408.24
4.4.90.0100.0137.43
4.4.80.0030.0337.43
4.4.70.0000.0377.43
4.4.60.0000.0277.43
4.4.50.0070.0337.43
4.4.40.0000.0377.43
4.4.30.0030.0377.43
4.4.20.0070.0277.43
4.4.10.0030.0207.43
4.4.00.0030.0507.43
4.3.110.0000.0407.43
4.3.100.0030.0177.43
4.3.90.0030.0337.43
4.3.80.0030.0507.43
4.3.70.0030.0207.43
4.3.60.0000.0237.43
4.3.50.0000.0407.43
4.3.40.0030.0477.43
4.3.30.0070.0337.43
4.3.20.0030.0177.43
4.3.10.0000.0207.43
4.3.00.0070.0307.43

preferences:
47.99 ms | 401 KiB | 5 Q