3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; $a['b']['c']['d'] = 1; $a['b']['c']['d2'] = new stdclass(); $a['b']['c']['d3'] = []; var_dump(isset($a['b']['c']['d'])); // as expected, and within type var_dump(isset($a['b']['c']['f'])); // as expected, and within type var_dump(isset($a['b']['c']['d']['g'])); // as expected, because 'd' is 1 var_dump(isset($a['b']['c']['d']->g)); // as expected, because 'd' is 1 var_dump(isset($a['b']['c']['d3']->f)); // as expected, because 'd' is an array var_dump(isset($a['b']['c']['d3']['f'])); // as expected, because 'd' is an array var_dump(isset($a['b']['c']['d2']->f)); // as expected, because 'd' is an object var_dump(isset($a['b']['c']['d2']['f'])); // fatal error!! var_dump(isset($a['b']['c']['D']['g']->f)); // as expected, because 'D' is actually null var_dump(isset($a['b']['c']['D']['g']['f'])); // as expected, because 'D' is actually null // isset($a['b']['c']['d']) is set so following are true and within type var_dump(isset($a['b']['c'])); var_dump(isset($a['b'])); $i = 1; echo $i[3]; // error,

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)
8.5.30.0130.00418.17
8.5.20.0090.00819.97
8.5.10.0110.00716.94
8.5.00.0100.01322.98
8.4.180.0090.00219.80
8.4.170.0150.00723.71
8.4.160.0120.00923.94
8.4.150.0060.00617.01
8.4.140.0090.01118.00
8.4.130.0100.00517.98
8.4.120.0390.00917.87
8.4.110.0410.01018.04
8.4.100.0270.00817.83
8.4.90.0430.00717.84
8.4.80.0440.00818.03
8.4.70.0430.00817.85
8.4.60.0410.00617.95
8.4.50.0420.01017.80
8.4.40.0350.00817.65
8.4.30.0360.00717.56
8.4.20.0260.00517.57
8.4.10.0270.00517.65
8.3.300.0110.01018.60
8.3.290.0100.01020.76
8.3.280.0100.01018.51
8.3.270.0090.01016.75
8.3.260.0260.00716.54
8.3.250.0280.00616.60
8.3.240.0370.00816.44
8.3.230.0420.00716.66
8.3.220.0300.00616.61
8.3.210.0300.01016.73
8.3.200.0330.01016.67
8.3.190.0290.00616.56
8.3.180.0360.00716.84
8.3.170.0330.00516.52
8.3.160.0450.00816.78
8.3.150.0410.01016.25
8.3.140.0400.01016.55
8.3.130.0370.00816.70
8.3.120.0360.00916.61
8.3.110.0450.00716.61
8.3.100.0420.00916.80
8.3.90.0360.00716.59
8.3.80.0340.00816.79
8.3.70.0300.00716.44
8.3.60.0460.00816.29
8.3.50.0310.00716.48
8.3.40.0430.00717.66
8.3.30.0350.00917.48
8.3.20.0360.00717.38
8.3.10.0270.01017.60
8.3.00.0370.00917.48
8.2.300.0130.00718.26
8.2.290.0340.00516.53
8.2.280.0320.00816.92
8.2.270.0330.00916.53
8.2.260.0320.00816.68
8.2.250.0330.00916.62
8.2.240.0340.00916.53
8.2.230.0340.00816.40
8.2.220.0320.00916.50
8.2.210.0280.00816.51
8.2.200.0240.00916.61
8.2.190.0300.00616.49
8.2.180.0300.00816.29
8.2.170.0370.00917.55
8.2.160.0370.00717.69
8.2.150.0390.00617.57
8.2.140.0380.00717.57
8.2.130.0390.00517.37
8.2.120.0340.01017.53
8.2.110.0220.00817.63
8.2.100.0340.00717.48
8.2.90.0380.00817.59
8.2.80.0350.00717.53
8.2.70.0360.00817.52
8.2.60.0300.00717.45
8.2.50.0380.00617.44
8.2.40.0320.01017.52
8.2.30.0310.00717.57
8.2.20.0340.00617.46
8.2.10.0320.00817.42
8.2.00.0310.00817.63
8.1.340.0060.00217.82

preferences:
45.51 ms | 870 KiB | 5 Q