3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['foo' => 'bar']; print_r(serialize($array)); echo '<br>'; print_r(json_array($array));

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)
8.3.60.0040.01116.50
8.3.50.0120.00722.11
8.3.40.0070.01018.84
8.3.30.0120.00318.63
8.3.20.0050.00320.25
8.3.10.0050.00323.68
8.3.00.0100.00019.38
8.2.180.0100.01018.25
8.2.170.0030.01022.96
8.2.160.0100.00320.39
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0030.00917.75
8.2.120.0040.00426.35
8.2.110.0090.00020.88
8.2.100.0120.00017.80
8.2.90.0060.00319.26
8.2.80.0000.00817.97
8.2.70.0050.00317.36
8.2.60.0050.00317.80
8.2.50.0080.00018.07
8.2.40.0070.00019.34
8.2.30.0030.00520.61
8.2.20.0070.00017.77
8.2.10.0050.00217.92
8.2.00.0000.00717.93
8.1.280.0030.01425.92
8.1.270.0120.00621.92
8.1.260.0080.00028.09
8.1.250.0000.00728.09
8.1.240.0100.00722.62
8.1.230.0110.00017.64
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0000.00917.25
8.1.190.0040.00717.13
8.1.180.0090.00018.10
8.1.170.0000.00818.84
8.1.160.0000.00822.04
8.1.150.0050.00218.82
8.1.140.0000.00819.53
8.1.130.0040.00417.63
8.1.120.0070.00017.30
8.1.110.0000.00817.25
8.1.100.0040.00417.39
8.1.90.0040.00417.34
8.1.80.0040.00417.29
8.1.70.0030.00317.22
8.1.60.0030.00617.48
8.1.50.0060.00317.47
8.1.40.0080.00317.52
8.1.30.0060.00317.56
8.1.20.0040.00417.65
8.1.10.0000.00817.54
8.1.00.0000.00817.46
8.0.300.0000.00818.77
8.0.290.0070.00016.75
8.0.280.0050.00318.44
8.0.270.0040.00417.16
8.0.260.0050.00218.37
8.0.250.0070.00016.84
8.0.240.0040.00716.82
8.0.230.0000.00716.80
8.0.220.0000.00816.89
8.0.210.0000.00716.74
8.0.200.0000.00616.84
8.0.190.0000.00716.88
8.0.180.0060.00316.91
8.0.170.0080.00016.78
8.0.160.0030.00516.81
8.0.150.0020.00516.80
8.0.140.0060.00316.66
8.0.130.0000.00613.26
8.0.120.0080.00016.78
8.0.110.0000.00816.96
8.0.100.0020.00516.76
8.0.90.0000.00716.84
8.0.80.0070.01016.77
8.0.70.0050.00316.78
8.0.60.0040.00416.77
8.0.50.0000.00716.77
8.0.30.0140.00616.94
8.0.20.0080.01217.40
8.0.10.0040.00417.00
8.0.00.0090.01016.81
7.4.330.0020.00215.08
7.4.320.0030.00316.45
7.4.300.0060.00016.50
7.4.290.0040.00416.50
7.4.280.0050.00316.34
7.4.270.0000.00716.60
7.4.260.0040.00416.53
7.4.250.0000.00916.60
7.4.240.0030.00516.45
7.4.230.0000.00716.59
7.4.220.0140.01016.43
7.4.210.0090.00716.48
7.4.200.0040.00216.43
7.4.160.0040.01216.61
7.4.150.0160.01017.40
7.4.140.0110.01017.86
7.4.130.0040.01416.64
7.4.120.0080.00816.56
7.4.110.0120.00916.59
7.4.100.0120.00616.55
7.4.90.0180.00016.48
7.4.80.0060.01619.39
7.4.70.0130.00316.48
7.4.60.0060.01016.49
7.4.50.0030.00616.54
7.4.40.0130.00316.45
7.4.30.0160.00916.54
7.4.00.0060.00615.05
7.3.330.0030.00313.09
7.3.320.0050.00013.10
7.3.310.0030.00316.34
7.3.300.0030.00316.28
7.3.290.0040.00416.24
7.3.280.0090.01116.28
7.3.270.0040.01417.40
7.3.260.0090.00916.22
7.3.250.0100.00816.27
7.3.240.0130.00716.28
7.3.230.0130.00316.39
7.3.210.0060.00916.38
7.3.200.0070.01416.36
7.3.190.0100.00716.29
7.3.180.0120.00316.43
7.3.170.0210.00016.38
7.3.160.0130.00616.48
7.3.120.0080.00614.68
7.3.110.0070.00514.78
7.3.100.0050.00914.93
7.3.90.0070.00714.56
7.3.80.0030.00714.71
7.3.70.0070.00814.58
7.3.60.0060.00714.73
7.3.50.0040.01114.80
7.3.40.0060.00814.79
7.3.30.0100.00514.84
7.3.20.0070.00816.58
7.3.10.0080.00516.52
7.3.00.0050.00616.52
7.2.330.0070.01016.71
7.2.320.0120.01216.65
7.2.310.0070.01016.39
7.2.300.0060.01516.36
7.2.290.0100.00916.64
7.2.240.0060.00814.99
7.2.230.0040.01114.83
7.2.220.0070.00614.87
7.2.210.0030.00714.89
7.2.200.0050.01014.81
7.2.190.0080.00314.90
7.2.180.0050.00514.87
7.2.170.0050.00914.90
7.2.160.0020.01015.03
7.2.150.0050.00716.85
7.2.140.0090.00516.79
7.2.130.0060.00716.66
7.2.120.0030.01016.84
7.2.110.0050.00716.65
7.2.100.0090.00516.82
7.2.90.0080.00716.82
7.2.80.0050.00916.82
7.2.70.0020.01216.79
7.2.60.0040.00816.86
7.2.50.0080.00616.83
7.2.40.0090.00516.81
7.2.30.0070.00716.94
7.2.20.0080.00516.75
7.2.10.0040.00616.80
7.2.00.0040.01117.40
7.1.330.0070.00915.88
7.1.320.0050.00815.84
7.1.310.0040.00815.62
7.1.300.0030.00915.65
7.1.290.0030.01215.74
7.1.280.0050.01015.54
7.1.270.0050.00915.65
7.1.260.0080.00615.67
7.1.250.0060.00315.58
7.1.200.0000.01015.56
7.1.100.0000.00918.01
7.1.70.0030.00517.05
7.1.60.0100.01319.48
7.1.50.0100.01016.73
7.1.00.0030.07722.47
7.0.200.0300.00014.51
7.0.60.0070.08319.75
7.0.50.0030.04017.79
7.0.40.0130.05720.09
7.0.30.0000.07720.09
7.0.20.0330.07020.16
7.0.10.0030.05720.31
7.0.00.0070.04020.13
5.6.280.0000.07721.09
5.6.210.0030.04720.66
5.6.200.0130.08018.09
5.6.190.0130.07720.63
5.6.180.0230.08020.58
5.6.170.0170.04720.50
5.6.160.0200.06720.38
5.6.150.0070.03318.07
5.6.140.0100.08018.20
5.6.130.0030.04318.21
5.6.120.0130.07721.01
5.6.110.0030.04321.00
5.6.100.0100.08020.96
5.6.90.0070.06721.07
5.6.80.0030.03720.56
5.5.350.4300.04020.39
5.5.340.0130.07718.00
5.5.330.0100.08020.14
5.5.320.0500.04720.34
5.5.310.0300.03720.26
5.5.300.0030.08317.98
5.5.290.0100.07717.95
5.5.280.0070.04020.67
5.5.270.0070.05020.78
5.5.260.0070.07720.88
5.5.250.0100.07320.65
5.5.240.0200.05320.16

preferences:
40.03 ms | 401 KiB | 5 Q