3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = NULL; echo "print_r of x:\n"; print_r($x); echo "\n\nis_null of x:\n"; print_r(is_null($x)); echo "\n\nisset of x:\n"; print_r(isset($x)); echo "\n\nprint_r of y:\n"; print_r($y); echo "\n\nis_null of y:\n"; print_r(is_null($y)); echo "\n\nisset of y:\n"; print_r(isset($y));

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)
8.3.60.0140.00318.68
8.3.50.0110.00718.21
8.3.40.0130.00318.85
8.3.30.0100.00318.68
8.3.20.0050.00319.16
8.3.10.0080.00021.73
8.3.00.0080.00020.68
8.2.180.0060.00918.55
8.2.170.0110.00322.96
8.2.160.0090.00622.11
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0050.00318.09
8.2.120.0040.00426.35
8.2.110.0030.00620.98
8.2.100.0060.00617.84
8.2.90.0030.00618.03
8.2.80.0100.00017.97
8.2.70.0040.00418.03
8.2.60.0000.00817.97
8.2.50.0060.00318.10
8.2.40.0040.00419.14
8.2.30.0000.00819.18
8.2.20.0040.00417.90
8.2.10.0030.00517.89
8.2.00.0060.00317.56
8.1.280.0110.00825.92
8.1.270.0040.00420.71
8.1.260.0050.00326.35
8.1.250.0070.00028.09
8.1.240.0040.00422.14
8.1.230.0040.00722.81
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0130.00017.23
8.1.190.0000.00817.23
8.1.180.0080.00018.10
8.1.170.0030.00518.67
8.1.160.0020.00518.81
8.1.150.0000.00718.73
8.1.140.0040.00422.18
8.1.130.0060.00020.16
8.1.120.0070.00017.42
8.1.110.0050.00517.43
8.1.100.0000.00717.39
8.1.90.0040.00417.41
8.1.80.0040.00417.37
8.1.70.0040.00717.43
8.1.60.0040.00417.53
8.1.50.0000.00817.38
8.1.40.0060.00317.44
8.1.30.0040.00417.52
8.1.20.0000.00717.59
8.1.10.0000.00817.50
8.1.00.0000.00717.49
8.0.300.0070.00019.73
8.0.290.0050.00516.75
8.0.280.0040.00418.39
8.0.270.0000.00817.19
8.0.260.0030.00318.51
8.0.250.0040.00416.91
8.0.240.0030.00516.86
8.0.230.0030.00316.95
8.0.220.0000.00716.91
8.0.210.0000.00716.74
8.0.200.0030.00316.94
8.0.190.0070.00016.90
8.0.180.0080.00016.78
8.0.170.0000.00916.78
8.0.160.0070.00016.88
8.0.150.0040.00416.77
8.0.140.0000.00716.68
8.0.130.0000.00613.30
8.0.120.0030.00516.76
8.0.110.0050.00316.69
8.0.100.0000.00716.83
8.0.90.0030.00516.86
8.0.80.0080.01016.88
8.0.70.0050.00216.87
8.0.60.0040.00416.87
8.0.50.0050.00216.87
8.0.30.0080.01016.87
8.0.20.0090.00917.40
8.0.10.0040.00417.05
8.0.00.0100.00916.72
7.4.330.0050.00015.55
7.4.320.0060.00016.52
7.4.300.0070.00016.41
7.4.290.0000.00716.53
7.4.280.0030.00616.43
7.4.270.0040.00416.54
7.4.260.0000.00716.44
7.4.250.0050.00316.39
7.4.240.0030.00316.46
7.4.230.0030.00316.47
7.4.220.0000.00716.55
7.4.210.0040.01316.51
7.4.200.0030.00316.32
7.4.160.0090.01016.48
7.4.140.0080.01217.86
7.4.130.0130.01016.70
7.4.120.0110.00916.43
7.4.110.0060.01316.43
7.4.100.0090.00816.41
7.4.90.0090.00916.41
7.4.80.0090.01119.39
7.4.70.0100.00616.39
7.4.60.0060.00916.44
7.4.50.0040.01116.51
7.4.40.0120.00416.17
7.3.330.0000.00513.03
7.3.320.0050.00012.95
7.3.310.0030.00616.27
7.3.300.0000.00715.99
7.3.290.0070.00016.20
7.3.280.0090.00916.10
7.3.260.0080.00916.33
7.3.240.0110.00616.34
7.3.230.0060.01216.37
7.3.210.0030.01316.52
7.3.200.0130.00316.48
7.3.190.0030.01416.57
7.3.180.0090.00916.10
7.3.170.0070.01116.30
7.3.160.0090.00616.33
7.2.330.0060.01016.44
7.2.320.0070.01516.50
7.2.310.0100.01416.52
7.2.300.0040.01216.35
7.2.290.0100.00716.37

preferences:
49.79 ms | 401 KiB | 5 Q