3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( 'a' => array('w'=>'d','c'=>'q','v'=>'g','f' => 'h'), 'b' => 'v' ); echo json_encode($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)
8.3.40.0110.00418.73
8.3.30.0120.00318.46
8.3.20.0040.00420.26
8.3.10.0030.00718.88
8.3.00.0080.00020.55
8.2.170.0040.01122.96
8.2.160.0140.00319.32
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00422.25
8.2.120.0040.00426.35
8.2.110.0000.01121.06
8.2.100.0040.00817.78
8.2.90.0040.00417.84
8.2.80.0060.00319.82
8.2.70.0040.00417.50
8.2.60.0080.00017.63
8.2.50.0030.00618.10
8.2.40.0080.00019.48
8.2.30.0000.00719.22
8.2.20.0040.00417.92
8.2.10.0070.00017.90
8.2.00.0030.00717.65
8.1.270.0040.00423.83
8.1.260.0070.00028.09
8.1.250.0060.00328.09
8.1.240.0090.00020.75
8.1.230.0070.00322.12
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0000.00817.10
8.1.190.0090.00017.10
8.1.180.0000.00818.10
8.1.170.0000.00820.59
8.1.160.0040.00422.13
8.1.150.0000.00718.86
8.1.140.0040.00419.37
8.1.130.0000.00717.59
8.1.120.0070.00017.46
8.1.110.0040.00417.31
8.1.100.0070.00017.33
8.1.90.0000.00717.26
8.1.80.0040.00317.33
8.1.70.0080.00017.36
8.1.60.0040.00417.48
8.1.50.0040.00417.45
8.1.40.0080.00017.48
8.1.30.0000.00817.55
8.1.20.0000.00717.57
8.1.10.0020.00517.50
8.1.00.0040.00417.47
8.0.300.0000.00819.95
8.0.290.0040.00416.75
8.0.280.0000.00718.35
8.0.270.0070.00017.17
8.0.260.0030.00317.38
8.0.250.0000.00716.93
8.0.240.0000.00716.81
8.0.230.0080.00016.86
8.0.220.0030.00316.82
8.0.210.0030.00316.83
8.0.200.0060.00016.73
8.0.190.0100.00316.80
8.0.180.0000.00816.87
8.0.170.0000.00716.87
8.0.160.0050.00216.79
8.0.150.0030.00316.76
8.0.140.0000.00816.77
8.0.130.0000.00513.32
8.0.120.0000.00716.80
8.0.110.0040.00416.71
8.0.100.0000.00716.84
8.0.90.0050.00216.74
8.0.80.0030.01116.87
8.0.70.0050.00516.77
8.0.60.0000.00816.79
8.0.50.0040.00416.67
8.0.30.0090.01016.79
8.0.20.0100.00817.40
8.0.10.0030.00316.88
8.0.00.0080.00916.55
7.4.330.0020.00215.14
7.4.320.0030.00316.41
7.4.300.0030.00316.38
7.4.290.0030.00316.43
7.4.280.0080.00016.41
7.4.270.0060.00016.34
7.4.260.0000.00716.36
7.4.250.0050.00216.47
7.4.240.0040.00416.16
7.4.230.0040.00416.63
7.4.220.0130.00316.59
7.4.210.0100.00316.59
7.4.200.0030.00316.27
7.4.160.0040.01216.37
7.4.150.0080.00817.40
7.4.140.0090.00817.86
7.4.130.0090.00816.45
7.4.120.0120.00516.39
7.4.110.0100.01316.37
7.4.100.0110.00616.29
7.4.90.0060.01616.31
7.4.80.0060.01219.39
7.4.70.0130.00616.34
7.4.60.0090.00616.62
7.4.50.0100.00716.21
7.4.40.0150.00616.29
7.4.30.0070.01416.28
7.4.00.0060.01115.07
7.3.330.0030.00312.89
7.3.320.0000.00512.89
7.3.310.0000.00715.96
7.3.300.0070.00016.03
7.3.290.0080.00616.17
7.3.280.0080.00916.11
7.3.270.0030.01917.40
7.3.260.0120.01216.30
7.3.250.0070.01016.19
7.3.240.0030.01416.19
7.3.230.0060.01316.39
7.3.210.0060.00916.36
7.3.200.0100.00716.32
7.3.190.0110.00516.14
7.3.180.0100.01016.13
7.3.170.0140.00316.32
7.3.160.0070.01016.43
7.3.120.0070.01014.63
7.3.110.0030.01514.83
7.3.100.0060.00614.66
7.3.90.0070.00714.54
7.3.80.0000.01114.38
7.3.70.0040.00814.69
7.3.60.0070.00314.69
7.3.50.0040.00814.41
7.3.40.0070.00714.57
7.3.30.0070.00314.74
7.3.20.0100.00316.58
7.3.10.0070.01016.49
7.3.00.0000.01016.38
7.2.330.0030.01416.62
7.2.320.0060.01116.43
7.2.310.0100.00716.56
7.2.300.0100.01016.41
7.2.290.0090.00616.57
7.2.250.0100.01015.10
7.2.240.0070.01115.03
7.2.230.0040.01114.89
7.2.220.0090.00615.04
7.2.210.0000.01514.97
7.2.200.0060.01014.81
7.2.190.0100.00714.60
7.2.180.0000.01414.76
7.2.170.0030.01314.78
7.2.60.0340.01016.88
7.2.50.0100.00316.62
7.2.00.0270.00819.16
7.1.330.0070.00715.64
7.1.320.0040.01115.59
7.1.310.0030.00915.84
7.1.300.0120.00415.40
7.1.290.0100.00315.46
7.1.280.0060.00615.77
7.1.270.0040.00815.55
7.1.260.0060.00315.53
7.1.200.0070.00515.18
7.1.70.0000.00817.09
7.1.60.0040.00717.21
7.1.50.0120.00916.86
7.1.00.0100.07022.41
7.0.200.0070.01016.73
7.0.110.0270.07320.13
7.0.100.0400.05020.27
7.0.90.0300.05320.26
7.0.80.0370.05020.28
7.0.70.0700.06020.29
7.0.60.0370.05320.15
7.0.50.0500.05320.25
7.0.40.0470.04720.34
7.0.30.0330.05720.13
7.0.20.0330.05020.29
7.0.10.0330.05720.30
7.0.00.0270.05320.21
5.6.260.0230.06020.89
5.6.250.0030.06721.04
5.6.240.0130.05320.84
5.6.230.0030.06320.93
5.6.220.0170.05321.06
5.6.210.0200.05021.03
5.6.200.0170.07720.93
5.6.190.0200.06720.88
5.6.180.0100.05720.85
5.6.170.0270.04021.08
5.6.160.0170.05320.85
5.6.150.0200.04720.80
5.6.140.0070.05721.00
5.6.130.0130.07020.81
5.6.120.0230.04720.81
5.6.110.0130.05720.98
5.6.100.0170.05321.07
5.6.90.0100.06020.95
5.6.80.0230.04320.12
5.6.70.0270.04020.21
5.6.60.0170.05720.45
5.6.50.0170.04720.21
5.6.40.0130.05020.27
5.6.30.0070.06320.31
5.6.20.0200.07020.17
5.6.10.0130.05020.18
5.6.00.0130.05320.14

preferences:
87.8 ms | 400 KiB | 5 Q