3v4l.org

run code in 300+ PHP versions simultaneously
<?php $action = $_POST['action'] ?? 'default'; echo "Null coalesce with undefined variable: "; var_dump($action); if (isset($_POST['action'])) { $action = $_POST['action']; } else { $action = 'default'; } echo "If with undefined variable: "; var_dump($action); echo "\n"; // ----------------------------------------- $_POST['action'] = 'value'; $action = $_POST['action'] ?? 'default'; echo "Null coalesce with value: "; var_dump($action); $_POST['action'] = 'value'; if (isset($_POST['action'])) { $action = $_POST['action']; } else { $action = 'default'; } echo "If with value: "; var_dump($action); echo "\n"; // ----------------------------------------- $_POST['action'] = null; $action = $_POST['action'] ?? 'default'; echo "Null coalesce with explicit NULL: "; var_dump($action); // ----------------------------------------- $_POST['action'] = null; if (isset($_POST['action'])) { $action = $_POST['action']; } else { $action = 'default'; } echo "If with explicit NULL: "; var_dump($action);

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)
8.3.60.0120.00918.43
8.3.50.0110.00816.61
8.3.40.0140.00718.74
8.3.30.0140.00718.85
8.3.20.0030.00620.47
8.3.10.0000.00823.53
8.3.00.0070.00023.66
8.2.180.0120.00618.23
8.2.170.0120.00322.96
8.2.160.0040.01119.04
8.2.150.0050.00324.18
8.2.140.0030.00524.66
8.2.130.0040.00419.27
8.2.120.0070.00026.35
8.2.110.0090.00020.98
8.2.100.0000.01117.72
8.2.90.0030.00517.75
8.2.80.0050.00318.68
8.2.70.0030.00617.50
8.2.60.0000.00817.50
8.2.50.0050.00317.55
8.2.40.0040.00420.59
8.2.30.0020.00519.31
8.2.20.0040.00418.14
8.2.10.0000.00918.04
8.2.00.0040.00418.23
8.1.280.0090.00625.92
8.1.270.0070.00022.24
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0030.00619.26
8.1.230.0090.00322.82
8.1.220.0060.00318.61
8.1.210.0050.00318.77
8.1.200.0080.00017.54
8.1.190.0000.00817.36
8.1.180.0080.00018.10
8.1.170.0000.00818.24
8.1.160.0000.00718.86
8.1.150.0040.00418.90
8.1.140.0000.00719.11
8.1.130.0060.00317.76
8.1.120.0040.00417.38
8.1.110.0070.00017.36
8.1.100.0020.00517.43
8.1.90.0000.00817.43
8.1.80.0000.00817.48
8.1.70.0040.00417.50
8.1.60.0040.00417.67
8.1.50.0000.00817.48
8.1.40.0000.00817.43
8.1.30.0040.00417.71
8.1.20.0000.00817.56
8.1.10.0000.00717.57
8.1.00.0030.00617.55
8.0.300.0040.00420.09
8.0.290.0040.00416.75
8.0.280.0030.00318.39
8.0.270.0000.00817.26
8.0.260.0030.00317.27
8.0.250.0070.00016.83
8.0.240.0070.00016.86
8.0.230.0060.00316.99
8.0.220.0040.00416.78
8.0.210.0040.00416.81
8.0.200.0060.00016.95
8.0.190.0030.00517.00
8.0.180.0000.00916.93
8.0.170.0030.00516.81
8.0.160.0070.00016.80
8.0.150.0040.00416.95
8.0.140.0000.00716.92
8.0.130.0030.00313.39
8.0.120.0000.00816.74
8.0.110.0000.00716.84
8.0.100.0000.00716.84
8.0.90.0080.00016.93
8.0.80.0090.00616.80
8.0.70.0040.00416.87
8.0.60.0000.00816.89
8.0.50.0070.00016.99
8.0.30.0070.01017.06
8.0.20.0100.01117.40
8.0.10.0040.00417.03
8.0.00.0090.00916.92
7.4.330.0000.00516.77
7.4.320.0060.00016.66
7.4.300.0030.00316.57
7.4.290.0030.00316.54
7.4.280.0040.00416.50
7.4.270.0040.00416.63
7.4.260.0030.00316.50
7.4.250.0040.00416.57
7.4.240.0000.00716.51
7.4.230.0000.00716.67
7.4.220.0000.00816.51
7.4.210.0070.00716.66
7.4.200.0070.00016.60
7.4.160.0100.00816.53
7.4.150.0110.00817.40
7.4.140.0110.00917.86
7.4.130.0120.00916.51
7.4.120.0150.00716.52
7.4.110.0120.01216.54
7.4.100.0100.00716.54
7.4.90.0070.01416.48
7.4.80.0000.01719.39
7.4.70.0070.01116.45
7.4.60.0090.00616.41
7.4.50.0040.01116.14
7.4.40.0030.01316.45
7.4.00.0030.00914.83
7.3.330.0020.00213.18
7.3.320.0060.00013.10
7.3.310.0040.00416.42
7.3.300.0070.00016.33
7.3.290.0070.00016.31
7.3.280.0090.00716.28
7.3.270.0120.00617.40
7.3.260.0100.00716.37
7.3.250.0120.00516.51
7.3.240.0120.00616.33
7.3.230.0060.00916.30
7.3.210.0120.00416.30
7.3.200.0090.01416.58
7.3.190.0100.00716.23
7.3.180.0040.01116.52
7.3.170.0120.00916.23
7.3.160.0030.01316.34
7.2.330.0130.01016.89
7.2.320.0090.00916.45
7.2.310.0070.01016.42
7.2.300.0100.00616.79
7.2.290.0110.01116.78
7.2.60.0070.00316.82
7.2.10.0380.00717.95
7.2.00.0240.01017.82
7.1.200.0080.00415.71
7.1.120.0320.00416.86
7.1.110.0230.01415.96
7.1.100.0230.01216.19
7.1.90.0310.00915.90
7.1.80.0450.01015.92
7.1.70.1250.01015.23
7.1.60.0430.00732.98
7.1.50.0380.01632.86
7.1.40.0520.00632.43
7.1.30.0630.01432.66
7.1.20.0670.01132.67
7.1.10.0470.01214.79
7.1.00.0340.00314.79

preferences:
61.04 ms | 400 KiB | 5 Q