3v4l.org

run code in 300+ PHP versions simultaneously
<?php # Forget array_merge PHP 7.4 Spread Operator in Array Expression. # ONLY FOR PHP 7.4 + #/!\ PERFORMANCE BEST PRACTIVE /!\ $args = ['foo', 'bar', 'baz']; $arr = [...$args, 'buz']; var_dump($arr); # MULTIPLE SPREAD $arr1 = [1, 2, 3]; $arr2 = [4, 5, 6]; $arr3 = [...$arr1, ...$arr2]; $arr4 = [...$arr1, ...$arr3, 7, 8, 9]; var_dump($arr4); # SPREAD WITH FUNCTION function buildArray() { return ['red', 'green', 'blue']; } $arr5 = [...buildArray(), 'pink', 'violet', 'yellow']; var_dump($arr5); # SPREAD WITH GENERATOR function generator() { for ($i = 3; $i <= 5; $i++) { yield $i; } } $arr6 = [0, 1, 2, ...generator()]; var_dump($arr6); # SPEACIAL USECASE WHEN YOU NEED TO UNPACK ELEMENT WITH REFERENCE # $arr1 = ['red', 'green', 'blue']; # $arr2 = [...&$arr1]; # This will throw a syntax error because ...& isn't supported yet # To do that you will use another way like this : $arr7 = 'red'; $arr8 = [&$arr7, 'green', 'blue']; $arr9 = ['white', ...$arr8, 'black']; var_dump($arr9);

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)
8.4.130.0080.00318.85
8.4.120.0130.00723.93
8.4.110.0130.00718.69
8.4.100.0140.00617.57
8.4.90.0100.01117.85
8.4.80.0100.00522.55
8.4.70.0060.00318.00
8.4.60.0040.00618.75
8.4.50.0130.00818.51
8.4.40.0080.00017.44
8.4.30.0130.00918.59
8.4.20.0130.00719.80
8.4.10.0080.00017.87
8.3.260.0090.01016.75
8.3.250.0060.00218.88
8.3.240.0090.01017.06
8.3.230.0130.00716.32
8.3.220.0110.00917.17
8.3.210.0130.00716.64
8.3.200.0060.00316.79
8.3.190.0040.00316.91
8.3.180.0120.00616.53
8.3.170.0050.00318.91
8.3.160.0070.01016.64
8.3.150.0000.01818.90
8.3.140.0090.01218.92
8.3.130.0080.00018.60
8.3.120.0130.00319.15
8.3.110.0060.00320.94
8.3.100.0130.00324.06
8.3.90.0040.00426.77
8.3.80.0080.00316.63
8.3.70.0110.01116.58
8.3.60.0060.01018.43
8.3.50.0100.01223.56
8.3.40.0060.01020.55
8.3.30.0060.00918.84
8.3.20.0050.00320.77
8.3.10.0080.00020.26
8.3.00.0060.00320.46
8.2.290.0080.00720.30
8.2.280.0040.00420.01
8.2.270.0130.00617.11
8.2.260.0060.00316.44
8.2.250.0080.00016.75
8.2.240.0120.00616.94
8.2.230.0000.00922.58
8.2.220.0000.00937.54
8.2.210.0090.00626.77
8.2.200.0030.00616.63
8.2.190.0030.01316.75
8.2.180.0110.00416.88
8.2.170.0140.00318.91
8.2.160.0090.00622.96
8.2.150.0030.00525.66
8.2.140.0000.00724.66
8.2.130.0050.00326.16
8.2.120.0040.00426.16
8.2.110.0030.00719.30
8.2.100.0100.00317.91
8.2.90.0080.00019.20
8.2.80.0040.00417.97
8.2.70.0080.00017.63
8.2.60.0040.00417.63
8.2.50.0090.00017.50
8.2.40.0080.00417.63
8.2.30.0040.00419.50
8.2.20.0070.00018.00
8.2.10.0000.00719.26
8.2.00.0070.00019.34
8.1.330.0100.00821.98
8.1.320.0110.01016.06
8.1.310.0160.00318.50
8.1.300.0150.00418.18
8.1.290.0030.00630.84
8.1.280.0110.00725.92
8.1.270.0080.00021.96
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00623.97
8.1.230.0090.00317.64
8.1.220.0030.00717.78
8.1.210.0000.00918.77
8.1.200.0030.00717.36
8.1.190.0040.00417.36
8.1.180.0000.00818.10
8.1.170.0000.00818.64
8.1.160.0030.00618.84
8.1.150.0050.00218.85
8.1.140.0040.00418.89
8.1.130.0040.00417.45
8.1.120.0000.00917.49
8.1.110.0040.00417.28
8.1.100.0000.00717.47
8.1.90.0030.00317.50
8.1.80.0040.00417.42
8.1.70.0000.00717.50
8.1.60.0030.00617.55
8.1.50.0030.00517.52
8.1.40.0040.00417.40
8.1.30.0030.00617.61
8.1.20.0000.00817.66
8.1.10.0060.00317.54
8.1.00.0070.00317.43
8.0.300.0000.01018.77
8.0.290.0000.00716.63
8.0.280.0070.00018.43
8.0.270.0070.00017.96
8.0.260.0030.00316.88
8.0.250.0000.00716.95
8.0.240.0000.00816.82
8.0.230.0030.00316.99
8.0.220.0030.00316.79
8.0.210.0040.00416.84
8.0.200.0070.00016.97
8.0.190.0000.00816.85
8.0.180.0050.00216.90
8.0.170.0040.00416.94
8.0.160.0040.00416.82
8.0.150.0000.00716.82
8.0.140.0020.00516.71
8.0.130.0030.00313.32
8.0.120.0050.00316.86
8.0.110.0000.00716.93
8.0.100.0040.00416.93
8.0.90.0060.00316.71
8.0.80.0090.01416.91
8.0.70.0040.00416.90
8.0.60.0000.00716.73
8.0.50.0000.00816.71
8.0.30.0070.01116.89
8.0.20.0120.00816.94
8.0.10.0060.00917.03
8.0.00.0130.00916.85
7.4.330.0020.00215.55
7.4.320.0040.00416.61
7.4.300.0060.00316.66
7.4.290.0030.00516.55
7.4.280.0000.00816.43
7.4.270.0080.00016.61
7.4.260.0050.00013.30
7.4.250.0030.00516.58
7.4.240.0040.00316.51
7.4.230.0000.00716.58
7.4.220.0050.00216.46
7.4.210.0100.00916.60
7.4.200.0030.00416.64
7.4.160.0030.01616.64
7.4.150.0040.01116.61
7.4.140.0060.01116.48
7.4.130.0130.00916.51
7.4.120.0080.00916.46
7.4.110.0050.01416.54
7.4.100.0060.01016.58
7.4.90.0090.00816.54
7.4.80.0090.01017.92
7.4.70.0030.01316.44
7.4.60.0110.00616.54
7.4.50.0050.01016.36
7.4.40.0050.01016.46
7.4.30.0120.00716.41
7.4.20.0090.01016.16
7.4.10.0070.01116.16
7.4.00.0050.01116.50
7.3.330.0030.00316.12
7.3.320.0020.00213.07
7.3.310.0040.00416.07
7.3.300.0000.00716.17
7.3.290.0080.01016.14
7.3.280.0130.00216.11
7.3.270.0090.00616.16
7.3.260.0100.00716.20
7.3.250.0030.01316.11
7.3.240.0120.00316.05
7.3.230.0080.00716.21
7.3.220.0110.00316.15
7.3.210.0070.00916.09
7.3.200.0110.00416.14
7.3.190.0080.00816.19
7.3.180.0050.01216.17
7.3.170.0090.00516.16
7.3.160.0070.00916.11
7.3.150.0040.01316.11
7.3.140.0100.00716.24
7.3.130.0070.00916.16
7.3.120.0080.00716.06
7.3.110.0050.01016.15
7.3.100.0040.01216.13
7.3.90.0080.00716.20
7.3.80.0060.01116.11
7.3.70.0050.01016.22
7.3.60.0100.00816.20
7.3.50.0050.01116.16
7.3.40.0080.00916.20
7.3.30.0070.00816.17
7.3.20.0050.01216.16
7.3.10.0070.01116.14
7.3.00.0060.01016.08
7.2.340.0110.00316.05
7.2.330.0090.01016.18
7.2.320.0090.00616.12
7.2.310.0050.01016.31
7.2.300.0080.00916.28
7.2.290.0060.01216.13
7.2.280.0080.01016.11
7.2.270.0110.00716.05
7.2.260.0110.00716.29
7.2.250.0130.00616.28
7.2.240.0080.01016.30
7.2.230.0060.01016.35
7.2.220.0090.00816.32
7.2.210.0100.00816.13
7.2.200.0080.01016.20
7.2.190.0030.01516.22
7.2.180.0060.01016.32
7.2.170.0050.01216.22
7.2.160.0030.01216.33
7.2.150.0100.00716.39
7.2.140.0080.01016.17
7.2.130.0100.00716.31
7.2.120.0080.00916.42
7.2.110.0070.00916.29
7.2.100.0070.01016.31
7.2.90.0130.00616.14
7.2.80.0140.00616.24
7.2.70.0120.00916.31
7.2.60.0070.01116.30
7.2.50.0110.01216.25
7.2.40.0150.00616.36
7.2.30.0120.01216.42
7.2.20.0140.00916.34
7.2.10.0140.01116.36
7.2.00.0240.01216.31

preferences:
29.41 ms | 403 KiB | 5 Q