3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = []; if (@$array[elm]) { echo 'foo'; } if (@$array[$elm]) { echo 'foo'; } if (!empty($array[$elm])) { echo 'foo'; } if ($array[$elm] ?? false) { echo 'foo'; }

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)
8.3.60.0060.00916.63
8.3.50.0150.00616.55
8.3.40.0210.00018.75
8.3.30.0140.00718.79
8.3.20.0040.00420.84
8.3.10.0040.00423.67
8.3.00.0040.00421.85
8.2.180.0070.01418.29
8.2.170.0070.00722.96
8.2.160.0030.01022.13
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0050.00226.16
8.2.110.0060.00321.03
8.2.100.0090.00317.91
8.2.90.0030.00617.88
8.2.80.0080.00018.91
8.2.70.0040.00417.75
8.2.60.0000.00817.63
8.2.50.0050.00318.05
8.2.40.0000.00718.22
8.2.30.0050.00219.35
8.2.20.0070.00018.14
8.2.10.0040.00419.33
8.2.00.0100.00019.30
8.1.280.0110.00425.92
8.1.270.0040.00420.52
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0000.00919.54
8.1.230.0040.00720.85
8.1.220.0040.00418.68
8.1.210.0040.00418.77
8.1.200.0000.00817.25
8.1.190.0000.00817.35
8.1.180.0030.00618.10
8.1.170.0050.00317.62
8.1.160.0020.00518.82
8.1.150.0000.00819.02
8.1.140.0000.00720.76
8.1.130.0030.00320.19
8.1.120.0030.00317.35
8.1.110.0050.00317.47
8.1.100.0070.00017.43
8.1.90.0040.00417.42
8.1.80.0000.00817.36
8.1.70.0000.00717.41
8.1.60.0000.00817.63
8.1.50.0080.00017.52
8.1.40.0030.00517.51
8.1.30.0060.00317.66
8.1.20.0100.00017.58
8.1.10.0080.00017.45
8.1.00.0020.00517.43
8.0.300.0000.00718.77
8.0.290.0070.00017.04
8.0.280.0000.00718.45
8.0.270.0070.00018.06
8.0.260.0000.00819.98
8.0.250.0040.00416.91
8.0.240.0000.00717.06
8.0.230.0000.00817.00
8.0.220.0050.00216.98
8.0.210.0030.00316.92
8.0.200.0000.00617.00
8.0.190.0030.00716.90
8.0.180.0030.00516.85
8.0.170.0030.00816.88
8.0.160.0000.00716.89
8.0.150.0000.00716.85
8.0.140.0040.00416.93
8.0.130.0000.00513.40
8.0.120.0020.00516.80
8.0.110.0000.00716.89
8.0.100.0000.00817.01
8.0.90.0060.00316.77
8.0.80.0060.01316.93
8.0.70.0080.00017.01
8.0.60.0000.00717.02
8.0.50.0040.00416.91
8.0.30.0130.00316.99
8.0.20.0090.00917.28
8.0.10.0030.00516.95
8.0.00.0120.00616.57
7.4.330.0000.00516.72
7.4.320.0030.00316.54
7.4.300.0000.00816.51
7.4.290.0030.00316.64
7.4.280.0000.00816.35
7.4.270.0000.00716.45
7.4.260.0050.00013.27
7.4.250.0000.00716.36
7.4.240.0020.00516.44
7.4.230.0040.00416.70
7.4.220.0000.00716.64
7.4.210.0080.01016.53
7.4.200.0030.00316.41
7.4.130.0070.01116.73
7.4.120.0110.01116.38
7.4.110.0100.00616.34
7.4.100.0120.00916.59
7.4.90.0100.00716.43
7.4.80.0140.00419.39
7.4.70.0140.00716.62
7.4.60.0060.01016.32
7.4.50.0150.00016.55
7.4.40.0030.01316.48
7.4.10.0060.01116.45
7.4.00.0030.01316.29
7.3.330.0000.00716.48
7.3.320.0050.00013.22
7.3.310.0000.00716.44
7.3.300.0000.00716.33
7.3.290.0060.01216.45
7.3.280.0170.00716.29
7.3.260.0090.01016.31
7.3.240.0080.00916.36
7.3.230.0100.01116.28
7.3.210.0140.00316.34
7.3.200.0130.00716.45
7.3.190.0030.01816.39
7.3.180.0070.01016.36
7.3.170.0070.01016.35
7.3.160.0030.01316.42
7.3.130.0160.00316.24
7.3.120.0160.00316.27
7.3.110.0070.01016.29
7.3.100.0220.00016.34
7.3.90.0110.00316.37
7.3.80.0120.00316.34
7.3.70.0060.00916.37
7.3.60.0060.00916.37
7.3.50.0100.00716.27
7.3.40.0090.00616.25
7.3.30.0040.01116.41
7.3.20.0120.00316.36
7.3.10.0120.00316.38
7.3.00.0040.01116.39
7.2.330.0060.01716.47
7.2.320.0150.00716.72
7.2.310.0080.00816.72
7.2.300.0090.00916.23
7.2.290.0090.00916.71
7.2.260.0050.01116.32
7.2.250.0140.00716.68
7.2.240.0120.01116.53
7.2.230.0060.00916.37
7.2.220.0120.00316.39
7.2.210.0060.00916.38
7.2.200.0060.00916.51
7.2.190.0070.01116.41
7.2.180.0130.00416.54
7.2.170.0060.01216.46
7.2.160.0060.00916.55
7.2.150.0260.01016.63
7.2.140.0070.01316.69
7.2.130.0140.00316.51
7.2.120.0090.00616.68
7.2.110.0120.00616.59
7.2.100.0140.00516.58
7.2.90.0100.00616.50
7.2.80.0090.00616.57
7.2.70.0100.00616.50
7.2.60.0050.01016.57
7.2.50.0170.00016.46
7.2.40.0040.01216.39
7.2.30.0030.01216.64
7.2.20.0110.00416.59
7.2.10.0060.01016.63
7.2.00.0090.00616.29

preferences:
67.43 ms | 401 KiB | 5 Q