3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [1,2]; foreach($array as &$a) { if ($a == 1) { $array[] = 3; } echo $a . "\n"; } var_dump($array); unset($a); echo "----------\n"; foreach($array as $a) { var_dump($a); echo $a . "\n"; }

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)
8.3.60.0090.00618.56
8.3.50.0140.00318.38
8.3.40.0040.01118.67
8.3.30.0070.00718.84
8.3.20.0050.00220.34
8.3.10.0030.00520.86
8.3.00.0080.00021.02
8.2.180.0110.00416.63
8.2.170.0040.01122.96
8.2.160.0070.00720.35
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0090.00018.09
8.2.120.0050.00326.35
8.2.110.0030.00622.25
8.2.100.0070.00417.75
8.2.90.0040.00419.17
8.2.80.0030.00517.97
8.2.70.0040.00417.63
8.2.60.0000.00717.93
8.2.50.0090.00018.10
8.2.40.0000.00822.32
8.2.30.0040.00419.18
8.2.20.0040.00418.07
8.2.10.0040.00418.18
8.2.00.0000.00718.05
8.1.280.0110.01525.92
8.1.270.0050.00520.64
8.1.260.0070.00026.35
8.1.250.0050.00328.09
8.1.240.0030.00620.84
8.1.230.0090.00318.80
8.1.220.0000.00717.78
8.1.210.0030.00618.77
8.1.200.0030.00617.38
8.1.190.0060.00317.23
8.1.180.0040.00418.10
8.1.170.0000.00918.64
8.1.160.0000.00819.06
8.1.150.0000.00718.80
8.1.140.0040.00419.53
8.1.130.0040.00418.87
8.1.120.0050.00317.53
8.1.110.0000.00717.34
8.1.100.0000.00717.38
8.1.90.0000.00717.46
8.1.80.0000.00717.46
8.1.70.0000.00717.44
8.1.60.0030.00517.53
8.1.50.0000.00717.46
8.1.40.0040.00417.43
8.1.30.0040.00417.63
8.1.20.0050.00317.62
8.1.10.0000.00817.48
8.1.00.0060.00317.34
8.0.300.0070.00018.77
8.0.290.0020.00516.75
8.0.280.0070.00018.38
8.0.270.0030.00317.20
8.0.260.0070.00020.72
8.0.250.0040.00416.93
8.0.240.0030.00316.99
8.0.230.0030.00516.93
8.0.220.0030.00316.93
8.0.210.0030.00316.95
8.0.200.0030.00316.94
8.0.190.0030.00616.82
8.0.180.0030.00316.79
8.0.170.0030.00317.00
8.0.160.0090.00016.91
8.0.150.0000.00716.80
8.0.140.0000.00716.85
8.0.130.0030.00313.35
8.0.120.0000.00816.76
8.0.110.0040.00416.70
8.0.100.0050.00316.76
8.0.90.0030.00616.75
8.0.80.0120.00616.95
8.0.70.0070.00016.93
8.0.60.0050.00216.91
8.0.50.0040.00416.92
8.0.30.0080.01017.10
8.0.20.0120.00717.40
8.0.10.0060.00317.01
8.0.00.0090.00916.85
7.4.330.0000.00515.55
7.4.320.0000.00616.59
7.4.300.0060.00016.52
7.4.290.0000.00716.48
7.4.280.0000.00816.60
7.4.270.0070.00016.61
7.4.260.0030.00316.49
7.4.250.0070.00016.36
7.4.240.0050.00216.65
7.4.230.0000.00716.41
7.4.220.0200.00016.48
7.4.210.0090.00716.54
7.4.200.0050.00216.30
7.4.160.0130.00516.42
7.4.150.0150.00317.40
7.4.140.0160.00417.86
7.4.130.0110.00716.50
7.4.120.0090.01016.47
7.4.110.0120.00616.66
7.4.100.0140.00316.69
7.4.90.0090.01016.38
7.4.80.0160.00619.39
7.4.70.0130.00316.43
7.4.60.0070.01016.62
7.4.50.0000.01416.39
7.4.40.0070.01416.64
7.4.30.0060.01516.50
7.4.10.0080.01114.90
7.4.00.0090.00814.91
7.3.330.0060.00013.02
7.3.320.0030.00313.19
7.3.310.0000.00716.33
7.3.300.0000.00816.21
7.3.290.0000.00716.28
7.3.280.0090.00816.28
7.3.270.0130.01017.40
7.3.260.0150.00516.45
7.3.250.0070.00916.35
7.3.240.0120.00516.36
7.3.230.0140.00716.43
7.3.210.0030.01316.38
7.3.200.0070.01016.26
7.3.190.0170.00316.53
7.3.180.0140.00416.43
7.3.170.0070.01416.46
7.3.160.0040.01216.39
7.3.130.0030.01314.93
7.3.120.0060.01114.82
7.3.110.0090.00714.84
7.3.100.0100.00514.96
7.3.90.0060.00814.81
7.3.80.0080.00714.84
7.3.70.0060.00714.67
7.3.60.0050.00714.82
7.3.50.0060.00614.87
7.3.40.0080.00314.82
7.3.30.0070.00714.75
7.3.20.0080.00716.68
7.3.10.0090.00716.61
7.3.00.0100.00616.52
7.2.330.0090.01116.54
7.2.320.0090.00916.36
7.2.310.0100.00716.37
7.2.300.0070.01116.44
7.2.290.0120.01216.36
7.2.260.0070.01415.06
7.2.250.0070.01115.16
7.2.240.0090.00915.02
7.2.230.0020.01115.08
7.2.220.0050.01015.08
7.2.210.0040.00914.73
7.2.200.0040.01214.99
7.2.190.0050.00914.95
7.2.180.0060.00814.91
7.2.170.0070.00815.00
7.2.160.0030.00714.96
7.2.150.0060.01317.00
7.2.140.0100.00716.99
7.2.130.0060.00716.53
7.2.120.0050.01016.64
7.2.110.0110.00716.51
7.2.100.0100.00617.02
7.2.90.0050.00916.79
7.2.80.0160.00916.65
7.2.70.0060.00916.78
7.2.60.0100.00716.68
7.2.50.0110.00716.73
7.2.40.0110.01216.80
7.2.30.0080.00916.96
7.2.20.0100.00916.78
7.2.10.0170.00616.58
7.2.00.0100.00817.00
7.1.330.0040.00915.79
7.1.320.0050.00615.76
7.1.310.0070.00615.83
7.1.300.0050.00515.70
7.1.290.0080.00415.73
7.1.280.0070.00615.72
7.1.270.0060.00515.70
7.1.260.0060.00915.73
7.1.250.0050.00815.74
7.1.240.0000.01215.85
7.1.230.0000.01315.41
7.1.220.0060.00615.55
7.1.210.0090.00015.79
7.1.200.0030.00915.88
7.1.190.0000.01615.90
7.1.180.0090.00915.93
7.1.170.0000.01115.69
7.1.160.0060.00915.93
7.1.150.0070.00715.78
7.1.140.0060.00315.79
7.1.130.0030.00815.87
7.1.120.0070.00715.57
7.1.110.0000.00815.75
7.1.100.0030.00615.82
7.1.90.0040.01115.51
7.1.80.0070.00715.68
7.1.70.0740.01015.50
7.1.60.0170.01324.56
7.1.50.0190.00724.32
7.1.40.0590.01324.09
7.1.30.0680.00624.16
7.1.20.0820.00424.24
7.1.10.0550.00515.03
7.1.00.0420.01015.30
7.0.330.0030.01015.23
7.0.320.0030.01015.41
7.0.310.0030.00715.39
7.0.300.0030.00715.41
7.0.290.0060.00615.60
7.0.280.0110.00415.38
7.0.270.0000.01415.24
7.0.260.0080.00415.47
7.0.250.0030.00915.33
7.0.240.0050.00515.62
7.0.230.0100.00315.49
7.0.220.0100.00715.48
7.0.210.0040.01115.48
7.0.200.0200.01215.29
7.0.190.0630.00615.20
7.0.180.0600.01415.02
7.0.170.0550.00714.93
7.0.160.0750.00715.06
7.0.150.0480.00815.09
7.0.140.0560.00714.90
7.0.130.0500.00715.18
7.0.120.0510.01315.06
7.0.110.0640.00715.07
7.0.100.0710.00914.94
7.0.90.0660.01014.92
7.0.80.0520.01215.09
7.0.70.0440.00914.95
7.0.60.0720.01114.86
7.0.50.0470.01014.86
7.0.40.0650.01014.01
7.0.30.0530.01014.12
7.0.20.0470.01014.00
7.0.10.0580.01014.12
7.0.00.0550.00813.91
5.6.400.0040.01014.28
5.6.390.0040.01114.29
5.6.380.0040.01114.31
5.6.370.0060.00614.77
5.6.360.0000.01514.49
5.6.350.0030.01214.57
5.6.340.0000.01614.13
5.6.330.0070.00714.17
5.6.320.0070.00714.44
5.6.310.0000.00814.61
5.6.300.0070.00714.43
5.6.290.0000.01114.60
5.6.280.0060.00614.40
5.6.270.0000.00814.33
5.6.260.0070.00414.44
5.6.250.0040.00814.44
5.6.240.0100.00014.50
5.6.230.0060.00614.45
5.6.220.0100.00314.71
5.6.210.0100.00314.54
5.6.200.0070.00714.55
5.6.190.0060.00314.38
5.6.180.0140.00014.32
5.6.170.0030.01014.35
5.6.160.0040.01214.46
5.6.150.0000.01414.71
5.6.140.0060.01014.21
5.6.130.0000.01914.69
5.6.120.0070.01114.66
5.6.110.0000.00814.29
5.6.100.0000.01114.63
5.6.90.0080.00014.43
5.6.80.0070.00714.49
5.6.70.0090.00314.43
5.6.60.0000.01514.20
5.6.50.0030.00514.46
5.6.40.0080.00814.40
5.6.30.0070.01014.00
5.6.20.0040.00414.52
5.6.10.0050.00314.20
5.6.00.0030.00514.32

preferences:
59.29 ms | 401 KiB | 5 Q