3v4l.org

run code in 300+ PHP versions simultaneously
<?php $null = null; echo 'var_export(): ' . var_export($null, true); echo "\n"; echo 'var_dump(): ' . (function($v){ ob_start(); var_dump($v); return ob_get_clean(); })($null); //echo "\n"; echo 'print_r(): ' . print_r($null, true); echo "\n"; echo 'json_encode(): ' . json_encode($null); echo "\n"; echo 'serialize(): ' . serialize($null); echo "\n"; echo 'strval(): ' . strval($null); echo "\n"; echo 'gettype(): ' . gettype($null); echo "\n"; echo 'null coalesce: ' . ($null ?? 'null'); echo "\n"; echo 'ternary: ' . ($null === null ? 'null' : $null); echo "\n"; echo 'condition: ' . (function($v) { if ($v === null) { return 'null'; }})($null);

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)
8.5.00.0120.00820.16
8.4.150.0020.00114.05
8.4.140.0100.01117.71
8.4.130.0100.01019.14
8.4.120.0060.00220.73
8.4.110.0100.01122.51
8.4.100.0110.01217.79
8.4.90.0070.00618.77
8.4.80.0170.00417.89
8.4.70.0100.01118.04
8.4.60.0110.00518.69
8.4.50.0090.00718.45
8.4.40.0030.01617.64
8.4.30.0120.00618.91
8.4.20.0160.00018.60
8.4.10.0100.00019.32
8.3.280.0130.00818.45
8.3.270.0130.00616.63
8.3.260.0100.01016.58
8.3.250.0110.00717.05
8.3.240.0030.00416.75
8.3.230.0090.00216.55
8.3.220.0120.00617.20
8.3.210.0110.00816.79
8.3.200.0090.00216.68
8.3.190.0070.00417.30
8.3.180.0130.00716.53
8.3.170.0140.00420.38
8.3.160.0110.00816.40
8.3.150.0110.00719.02
8.3.140.0080.00817.33
8.3.130.0030.00618.25
8.3.120.0030.00619.14
8.3.110.0030.00620.94
8.3.100.0030.00624.06
8.3.90.0070.00326.77
8.3.80.0030.00718.18
8.3.70.0030.01218.36
8.3.60.0120.00318.30
8.3.50.0120.00316.43
8.3.40.0110.00420.29
8.3.30.0140.00020.34
8.3.20.0040.00424.18
8.3.10.0070.01324.66
8.3.00.0060.01324.66
8.2.290.0140.00520.51
8.2.280.0080.00620.18
8.2.270.0100.01018.96
8.2.260.0110.00716.68
8.2.250.0040.00418.33
8.2.240.0050.00319.14
8.2.230.0040.00422.58
8.2.220.0080.00037.54
8.2.210.0120.00626.77
8.2.200.0070.00716.63
8.2.190.0210.00016.75
8.2.180.0110.00716.63
8.2.170.0140.00718.79
8.2.160.0100.00322.96
8.2.150.0040.00425.66
8.2.140.0140.00724.66
8.2.130.0150.00324.66
8.2.120.0170.00324.66
8.2.110.0070.00724.66
8.2.100.0150.00024.66
8.2.90.0080.00824.66
8.2.80.0120.00924.66
8.2.70.0120.00324.66
8.2.60.0070.00724.66
8.2.50.0050.00324.66
8.2.40.0080.00024.66
8.2.30.0090.00924.66
8.2.20.0080.00024.66
8.2.10.0090.00024.66
8.2.00.0120.00624.66
8.1.330.0110.00721.92
8.1.320.0150.00316.20
8.1.310.0000.00818.50
8.1.300.0050.00519.81
8.1.290.0000.00930.84
8.1.280.0090.00625.92
8.1.270.0050.00324.66
8.1.260.0080.00024.66
8.1.250.0000.00824.66
8.1.240.0080.00024.66
8.1.230.0000.01524.66
8.1.220.0080.00024.66
8.1.210.0040.01124.66
8.1.200.0000.00824.66
8.1.190.0110.00424.66
8.1.180.0090.00624.66
8.1.170.0060.00624.66
8.1.160.0040.00424.66
8.1.150.0080.00824.66
8.1.140.0000.00824.66
8.1.130.0030.00524.66
8.1.120.0150.00024.66
8.1.110.0050.00324.66
8.1.100.0000.00824.66
8.1.90.0030.00624.66
8.1.80.0090.00624.66
8.1.70.0040.00424.66
8.1.60.0080.00024.66
8.1.50.0000.01524.66
8.1.40.0000.00824.66
8.1.30.0000.00824.66
8.1.20.0040.00424.66
8.1.10.0040.00424.66
8.1.00.0080.00024.66

preferences:
40.92 ms | 403 KiB | 5 Q