3v4l.org

run code in 300+ PHP versions simultaneously
<? $yourArray = array('first_key'=> 'First', 2, 3, 4, 5); $first_key = current(array_flip($yourArray)); echo $first_key;

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)
8.3.60.0040.01118.30
8.3.50.0110.00417.85
8.3.40.0150.00018.48
8.3.30.0110.00418.49
8.3.20.0040.00420.73
8.3.10.0070.00021.59
8.3.00.0000.00820.96
8.2.180.0100.00725.92
8.2.170.0080.00818.83
8.2.160.0030.01022.25
8.2.150.0070.00024.18
8.2.140.0030.00524.66
8.2.130.0060.00326.16
8.2.120.0120.00618.97
8.2.110.0090.00021.00
8.2.100.0060.00619.32
8.2.90.0050.00319.04
8.2.80.0040.00417.97
8.2.70.0040.00417.38
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0080.00019.88
8.2.30.0090.00017.92
8.2.20.0000.00717.92
8.2.10.0000.00819.11
8.2.00.0050.00318.21
8.1.270.0120.00322.12
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00319.01
8.1.230.0070.00322.13
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0090.00017.13
8.1.190.0030.00517.10
8.1.180.0050.00318.10
8.1.170.0050.00318.52
8.1.160.0050.00318.75
8.1.150.0070.00018.62
8.1.140.0030.00518.98
8.1.130.0030.00317.30
8.1.120.0050.00217.18
8.1.110.0040.00417.34
8.1.100.0000.00917.33
8.1.90.0040.00417.32
8.1.80.0040.00417.29
8.1.70.0000.00717.28
8.1.60.0080.00017.36
8.1.50.0100.00617.31
8.1.40.0120.00417.36
8.1.30.0110.00517.44
8.1.20.0100.00517.41
8.1.10.0140.00517.35
8.1.00.0160.00517.32
8.0.300.0070.00018.77
8.0.290.0060.00316.63
8.0.280.0070.00018.32
8.0.270.0040.00416.62
8.0.260.0070.00017.18
8.0.250.0030.00316.84
8.0.240.0040.00416.69
8.0.230.0000.00716.70
8.0.220.0040.00416.76
8.0.210.0000.00716.70
8.0.200.0050.00316.79
8.0.190.0070.00016.74
8.0.180.0100.00216.73
8.0.170.0110.00516.68
8.0.160.0120.00516.69
8.0.150.0100.00716.64
8.0.140.0120.00416.63
8.0.130.0110.00616.14
8.0.120.0110.00516.64
8.0.110.0110.00516.68
8.0.100.0130.00316.66
8.0.90.0120.00516.67
8.0.80.0140.00516.67
8.0.70.0120.00616.70
8.0.60.0130.00516.64
8.0.50.0120.00516.71
8.0.30.0140.00416.71
8.0.20.0150.00516.78
8.0.10.0130.00616.76
8.0.00.0060.00716.76
7.4.330.0050.00016.67
7.4.320.0060.00016.39
7.4.300.0030.00316.46
7.4.290.0120.00316.24
7.4.280.0150.00416.36
7.4.270.0110.00816.41
7.4.260.0150.00316.35
7.4.250.0100.00616.36
7.4.240.0130.00416.28
7.4.230.0140.00416.21
7.4.220.0130.00416.34
7.4.210.0110.00616.38
7.4.200.0130.00416.36
7.4.190.0130.00516.38
7.4.180.0110.00716.35
7.4.160.0100.00716.34
7.4.150.0110.00716.31
7.4.140.0120.00616.47
7.4.130.0110.00616.20
7.4.120.0120.00616.28
7.4.110.0120.00416.28
7.4.100.0100.00616.37
7.4.90.0100.00516.31
7.4.80.0120.00416.68
7.4.70.0120.00516.27
7.4.60.0100.00716.17
7.4.50.0120.00516.18
7.4.40.0110.00516.17
7.4.30.0120.00616.16
7.4.20.0100.00416.17
7.4.10.0080.00516.20
7.4.00.0100.00415.84
7.3.330.0130.00415.70
7.3.320.0120.00515.62
7.3.310.0140.00316.05
7.3.300.0140.00516.08
7.3.290.0120.00416.08
7.3.280.0140.00416.05
7.3.270.0130.00616.04
7.3.260.0130.00616.16
7.3.250.0140.00516.04
7.3.240.0130.00616.13
7.3.230.0140.00516.08
7.3.220.0150.00316.04
7.3.210.0120.00816.12
7.3.200.0140.00616.09
7.3.190.0140.00516.02
7.3.180.0130.00616.07
7.3.170.0140.00416.08
7.3.160.0130.00716.06
7.3.150.0150.00416.02
7.3.140.0140.00516.02
7.3.130.0150.00416.01
7.3.120.0150.00416.03
7.3.110.0160.00315.92
7.3.100.0170.00215.98
7.3.90.0160.00316.32
7.3.80.0130.00515.97
7.3.70.0150.00316.12
7.3.60.0150.00316.27
7.3.50.0120.00516.20
7.3.40.0130.00516.25
7.3.30.0120.00515.92
7.3.20.0170.00317.04
7.3.10.0170.00416.87
7.3.00.2570.00316.96
7.2.340.0160.00316.16
7.2.330.0120.00716.18
7.2.320.0140.00516.16
7.2.310.0120.00616.21
7.2.300.0140.00416.22
7.2.290.0140.00416.10
7.2.280.0150.00316.10
7.2.270.0140.00516.12
7.2.260.0160.00316.13
7.2.250.0120.00616.09
7.2.240.0130.00616.12
7.2.230.0150.00316.18
7.2.220.0140.00416.21
7.2.210.0130.00516.16
7.2.200.0170.00416.34
7.2.190.0110.00816.21
7.2.180.0150.00316.23
7.2.170.0140.00416.35
7.2.160.0140.00616.16
7.2.150.0150.00617.14
7.2.140.0190.00317.21
7.2.130.2310.00317.24
7.2.120.1480.00617.28
7.2.110.2310.00417.22
7.2.100.2240.00517.22
7.2.90.1830.00417.13
7.2.80.1050.00717.18
7.2.70.0170.00317.11
7.2.60.0150.00517.26
7.2.50.0170.00617.15
7.2.40.0490.00417.29
7.2.30.0160.00417.19
7.2.20.0150.00517.18
7.2.10.0170.00417.27
7.2.00.0190.00317.22
7.1.330.0130.00416.51
7.1.320.0110.00616.57
7.1.310.0120.00516.55
7.1.300.0110.00616.54
7.1.290.0120.00616.50
7.1.280.0130.00416.50
7.1.270.0120.00716.01
7.1.260.0140.00516.10
7.1.250.1920.00415.99
7.1.240.0130.00416.35
7.1.230.0130.00516.45
7.1.220.0160.00416.39
7.1.210.0140.00416.46
7.1.200.0150.00316.50
7.1.190.0140.00416.46
7.1.180.0140.00316.44
7.1.170.0150.00316.44
7.1.160.0160.00216.50
7.1.150.0120.00616.46
7.1.140.0140.00316.43
7.1.130.0170.00516.47
7.1.120.0130.00516.36
7.1.110.0120.00516.33
7.1.100.0140.00316.41
7.1.90.0130.00516.35
7.1.80.0120.00516.44
7.1.70.0140.00416.23
7.1.60.0150.00316.44
7.1.50.0150.00416.44
7.1.40.0150.00416.51
7.1.30.0090.00916.51
7.1.20.0120.00616.40
7.1.10.0110.00616.39
7.1.00.0160.00316.33

preferences:
56.05 ms | 400 KiB | 5 Q