3v4l.org

run code in 300+ PHP versions simultaneously
<?php $headers1 = [ 'content-type' => ['application/foo'], '-1' => ['custom'], ]; $headers2 = [ 'content-type' => ['application/bar'], '-1' => ['override'], ]; var_dump($headers1); var_dump(array_merge($headers1, $headers2));

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)
8.4.140.0120.01117.59
8.4.130.0140.00717.42
8.4.120.0100.00720.54
8.4.110.0130.00818.79
8.4.100.0150.00517.69
8.4.90.0130.00620.68
8.4.80.0080.00820.60
8.4.70.0070.01018.87
8.4.60.0150.00720.59
8.4.50.0030.00622.49
8.4.40.0090.00317.45
8.4.30.0080.01217.57
8.4.20.0200.00019.27
8.4.10.0030.00619.49
8.3.270.0150.00816.58
8.3.260.0080.00716.28
8.3.250.0080.00817.26
8.3.240.0100.00816.53
8.3.230.0060.01216.65
8.3.220.0030.00518.82
8.3.210.0100.00716.66
8.3.200.0060.00316.34
8.3.190.0120.00617.05
8.3.180.0100.00718.79
8.3.170.0070.01116.79
8.3.160.0090.00918.96
8.3.150.0050.00516.93
8.3.140.0060.01216.45
8.3.130.0040.01118.51
8.3.120.0150.00420.76
8.3.110.0080.00016.36
8.3.100.0060.00316.60
8.3.90.0070.00326.77
8.3.80.0030.00619.36
8.3.70.0040.01116.58
8.3.60.0100.01018.30
8.3.50.0120.00516.54
8.3.40.0120.00318.52
8.3.30.0070.00718.46
8.3.20.0070.00021.78
8.3.10.0050.00323.48
8.3.00.0060.00323.27
8.2.290.0080.01118.66
8.2.280.0060.00919.90
8.2.270.0070.01116.42
8.2.260.0030.00717.15
8.2.250.0120.00318.59
8.2.240.0030.01316.77
8.2.230.0040.00420.94
8.2.220.0080.00024.06
8.2.210.0070.00026.77
8.2.200.0040.00418.88
8.2.190.0120.00916.58
8.2.180.0140.01018.42
8.2.170.0070.00722.96
8.2.160.0110.00318.68
8.2.150.0150.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00419.39
8.2.120.0040.00426.35
8.2.110.0040.00720.87
8.2.100.0120.00617.73
8.2.90.0040.00417.78
8.2.80.0060.00317.97
8.2.70.0000.00917.78
8.2.60.0040.00417.91
8.2.50.0040.00418.10
8.2.40.0000.00720.65
8.2.30.0040.00419.23
8.2.20.0030.00618.04
8.2.10.0040.00417.99
8.2.00.0000.00818.04
8.1.330.0100.00918.21
8.1.320.0090.01117.90
8.1.310.0060.00916.46
8.1.300.0070.00318.00
8.1.290.0090.00030.84
8.1.280.0110.00325.92
8.1.270.0070.00022.20
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0050.00520.31
8.1.230.0060.00622.75
8.1.220.0030.00517.78
8.1.210.0000.00818.77
8.1.200.0030.00717.10
8.1.190.0030.00517.10
8.1.180.0070.00018.10
8.1.170.0040.00418.51
8.1.160.0070.00018.93
8.1.150.0000.00718.72
8.1.140.0000.00719.03
8.1.130.0050.00317.55
8.1.120.0050.00317.45
8.1.110.0000.00717.44
8.1.100.0000.00817.36
8.1.90.0040.00417.37
8.1.80.0030.00517.38
8.1.70.0000.00717.43
8.1.60.0040.00417.49
8.1.50.0040.00417.34
8.1.40.0070.00017.49
8.1.30.0050.00317.57
8.1.20.0040.00417.47
8.1.10.0050.00217.46
8.1.00.0090.00017.39
8.0.300.0090.00019.42
8.0.290.0040.00416.58
8.0.280.0000.00718.43
8.0.270.0000.01017.13
8.0.260.0000.00616.74
8.0.250.0030.00316.90
8.0.240.0030.00316.81
8.0.230.0000.00716.86
8.0.220.0070.00016.79
8.0.210.0070.00016.84
8.0.200.0000.00716.92
8.0.190.0030.00516.91
8.0.180.0030.00416.82
8.0.170.0000.00916.84
8.0.160.0050.00316.77
8.0.150.0050.00216.76
8.0.140.0030.00516.75
8.0.130.0030.00313.24
8.0.120.0040.00416.70
8.0.110.0040.00416.71
8.0.100.0000.00716.80
8.0.90.0040.00416.68
8.0.80.0030.01816.86
8.0.70.0060.00316.80
8.0.60.0070.00016.87
8.0.50.0040.00416.64
8.0.30.0070.01016.97
8.0.20.0080.01117.40
8.0.10.0000.00717.05
8.0.00.0110.00716.86
7.4.330.0050.00016.78
7.4.320.0030.00316.46
7.4.300.0030.00316.52
7.4.290.0050.00216.48
7.4.280.0040.00416.46
7.4.270.0000.00716.50
7.4.260.0000.00716.31
7.4.250.0000.00716.32
7.4.240.0020.00516.53
7.4.230.0070.00016.59
7.4.220.0000.00816.53
7.4.210.0090.00916.48
7.4.200.0040.00416.42
7.4.160.0090.00716.37
7.4.150.0110.00617.40
7.4.140.0110.00917.86
7.4.130.0130.01016.37
7.4.120.0080.01316.43
7.4.110.0100.00716.58
7.4.100.0060.01016.59
7.4.90.0140.00416.47
7.4.80.0040.01219.39
7.4.70.0120.00816.27
7.4.60.0120.00416.23
7.4.50.0090.00916.38
7.4.40.0100.00716.29
7.4.00.0030.01015.05
7.3.330.0050.00012.88
7.3.320.0000.00512.97
7.3.310.0000.00716.27
7.3.300.0070.00016.17
7.3.290.0040.00316.09
7.3.280.0090.00716.12
7.3.270.0110.00617.40
7.3.260.0070.01116.30
7.3.250.0140.00816.24
7.3.240.0110.00916.37
7.3.230.0130.01016.35
7.3.210.0130.00316.26
7.3.200.0110.00716.30
7.3.190.0140.00716.17
7.3.180.0120.00316.39
7.3.170.0040.01216.50
7.3.160.0080.00816.07
7.3.10.0030.01216.45
7.3.00.0040.00916.34
7.2.330.0090.00916.52
7.2.320.0100.01016.17
7.2.310.0170.00016.33
7.2.300.0080.00816.44
7.2.290.0060.00916.46
7.2.130.0130.00316.65
7.2.120.0000.01316.43
7.2.110.0190.00016.47
7.2.100.0080.00416.51
7.2.90.0200.00716.67
7.2.80.0050.00516.82
7.2.70.0040.00416.53
7.2.60.0040.01016.78
7.2.50.0100.00316.67
7.2.40.0030.01416.42
7.2.30.0090.00916.33
7.2.20.0100.00016.69
7.2.10.0140.00917.02
7.2.00.0120.01117.03
7.1.250.0060.00615.27
7.1.200.0100.00315.56
7.1.120.0180.01116.34
7.1.110.0300.00316.25
7.1.100.0230.00716.33
7.1.90.0200.01216.34
7.1.80.0320.01215.89
7.1.70.0240.01215.24
7.1.60.0310.01333.29
7.1.50.0350.01432.63
7.1.40.0430.00332.55
7.1.30.0470.01132.63
7.1.20.0400.01232.70
7.1.10.0330.01014.79
7.1.00.0210.01114.97

preferences:
28.89 ms | 403 KiB | 5 Q