3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [0, 1, 2]; $ref =& $array; // Necessary to trigger the old behavior $i = 0; foreach ($array as $k => &$val) { $i++; echo $i . ':' . $k . ':' . $val . ' '; if($i < 5 && !isset($array[$i])) $array[$i] = $val+1; if($i == 2) array_unshift($array, 'X'); } echo PHP_EOL . json_encode($array);

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)
8.3.60.0030.01416.48
8.3.50.0110.00821.21
8.3.40.0070.00718.71
8.3.30.0070.01118.67
8.3.20.0040.00420.21
8.3.10.0040.00423.61
8.3.00.0040.00419.44
8.2.180.0120.00318.16
8.2.170.0070.00722.96
8.2.160.0160.00020.22
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0050.00226.16
8.2.120.0060.00317.75
8.2.110.0070.00319.30
8.2.100.0070.00717.82
8.2.90.0040.00419.39
8.2.80.0090.00017.97
8.2.70.0000.00917.62
8.2.60.0080.00017.93
8.2.50.0040.00418.07
8.2.40.0040.00419.27
8.2.30.0030.00619.92
8.2.20.0050.00317.82
8.2.10.0070.00018.13
8.2.00.0070.00018.06
8.1.280.0070.00725.92
8.1.270.0040.00420.23
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00323.97
8.1.230.0110.00019.00
8.1.220.0000.00917.78
8.1.210.0060.00618.77
8.1.200.0060.00317.35
8.1.190.0040.00717.35
8.1.180.0000.00718.10
8.1.170.0000.01118.52
8.1.160.0030.00521.99
8.1.150.0040.00418.96
8.1.140.0040.00417.38
8.1.130.0070.00017.63
8.1.120.0040.00417.50
8.1.110.0000.00717.50
8.1.100.0050.00317.48
8.1.90.0040.00417.38
8.1.80.0040.00417.42
8.1.70.0030.00317.47
8.1.60.0080.00017.55
8.1.50.0050.00317.53
8.1.40.0000.00917.44
8.1.30.0030.00517.68
8.1.20.0000.00717.59
8.1.10.0030.00517.56
8.1.00.0040.00417.53
8.0.300.0000.00818.77
8.0.290.0040.00416.75
8.0.280.0000.00718.45
8.0.270.0030.00317.31
8.0.260.0030.00317.32
8.0.250.0000.00717.01
8.0.240.0050.00317.00
8.0.230.0030.00317.06
8.0.220.0050.00316.87
8.0.210.0000.00816.80
8.0.200.0000.00716.87
8.0.190.0030.00316.95
8.0.180.0050.00216.93
8.0.170.0000.00816.79
8.0.160.0000.00716.88
8.0.150.0050.00316.88
8.0.140.0000.00716.82
8.0.130.0060.00013.29
8.0.120.0040.00416.82
8.0.110.0020.00516.79
8.0.100.0000.00816.90
8.0.90.0000.00716.88
8.0.80.0090.00616.90
8.0.70.0000.00716.86
8.0.60.0080.00016.70
8.0.50.0040.00416.97
8.0.30.0070.00916.98
8.0.20.0090.00917.40
8.0.10.0000.00717.09
8.0.00.0070.01116.86
7.4.330.0030.00315.08
7.4.320.0030.00316.53
7.4.300.0060.00016.46
7.4.290.0040.00416.50
7.4.280.0000.00816.55
7.4.270.0070.00016.61
7.4.260.0050.00316.68
7.4.250.0000.00816.53
7.4.240.0050.00316.54
7.4.230.0070.00016.51
7.4.220.0150.01216.54
7.4.210.0060.00816.53
7.4.200.0030.00316.52
7.4.160.0170.00716.36
7.4.150.0090.00917.40
7.4.140.0110.00817.86
7.4.130.0100.00816.45
7.4.120.0090.01116.58
7.4.110.0040.01716.57
7.4.100.0140.00716.65
7.4.90.0140.00316.71
7.4.80.0110.00619.39
7.4.70.0130.01016.45
7.4.60.0120.00316.50
7.4.50.0000.00816.51
7.4.40.0050.01616.57
7.4.30.0100.01316.63
7.4.10.0060.01316.29
7.4.00.0070.01115.66
7.3.330.0030.00313.02
7.3.320.0050.00013.16
7.3.310.0030.00316.41
7.3.300.0030.00316.19
7.3.290.0030.00416.13
7.3.280.0100.01016.24
7.3.270.0110.01417.40
7.3.260.0090.00916.26
7.3.250.0110.00716.36
7.3.240.0030.01316.29
7.3.230.0110.00616.57
7.3.210.0070.01016.50
7.3.200.0070.01016.52
7.3.190.0060.01316.24
7.3.180.0100.01116.43
7.3.170.0070.01016.27
7.3.160.0070.01016.19
7.3.130.0060.01316.56
7.3.120.0040.01816.09
7.3.110.0100.00716.41
7.3.100.0040.00816.14
7.3.90.0000.01516.36
7.3.80.0080.00816.26
7.3.70.0000.01316.24
7.3.60.0060.00316.23
7.3.50.0040.01216.25
7.3.40.0100.01016.36
7.3.30.0000.01416.33
7.3.20.0000.00918.15
7.3.10.0070.00616.96
7.3.00.0080.00416.84
7.2.330.0150.00316.57
7.2.320.0060.01216.81
7.2.310.0000.01616.63
7.2.300.0080.00816.60
7.2.290.0120.01216.35
7.2.260.0120.00616.29
7.2.250.0090.00916.47
7.2.240.0100.00716.66
7.2.230.0120.00616.70
7.2.220.0060.00916.50
7.2.210.0070.01016.68
7.2.200.0030.01616.39
7.2.190.0120.00016.47
7.2.180.0000.01516.48
7.2.170.0070.01316.45
7.2.160.0090.00316.54
7.2.150.0030.01018.37
7.2.140.0060.00818.54
7.2.130.0050.00717.22
7.2.120.0070.00717.06
7.2.110.0050.01017.26
7.2.100.0070.00817.21
7.2.90.0040.00817.29
7.2.80.0060.00717.26
7.2.70.0050.00917.26
7.2.60.0060.00817.14
7.2.50.0070.00517.18
7.2.40.0030.00917.29
7.2.30.0060.00817.23
7.2.20.0070.00517.19
7.2.10.0070.00617.19
7.2.00.0030.01017.52
7.1.330.0030.01217.47
7.1.320.0030.00717.55
7.1.310.0000.01717.48
7.1.300.0060.00617.42
7.1.290.0030.01017.25
7.1.280.0040.01117.32
7.1.270.0070.00717.33
7.1.260.0030.01017.26
7.1.250.0060.00716.10
7.1.240.0030.01617.33
7.1.230.0110.00717.25
7.1.220.0060.01217.24
7.1.210.0070.00717.33
7.1.200.0120.00416.56
7.1.190.0070.01017.28
7.1.180.0100.00317.17
7.1.170.0000.01017.33
7.1.160.0130.00317.45
7.1.150.0030.00717.19
7.1.140.0070.00717.41
7.1.130.0120.00317.50
7.1.120.0030.01017.07
7.1.110.0090.00617.21
7.1.100.0050.01117.68
7.1.90.0080.00817.24
7.1.80.0060.00617.23
7.1.70.0060.00417.41
7.1.60.0020.00818.64
7.1.50.0120.00917.10
7.1.40.0060.01217.09
7.1.30.0030.00817.37
7.1.20.0030.01317.30
7.1.10.0080.00817.41
7.1.00.0060.04119.87
7.0.330.0060.00317.01
7.0.320.0090.00917.12
7.0.310.0090.00317.05
7.0.300.0030.01017.03
7.0.290.0060.00716.94
7.0.280.0090.00016.84
7.0.270.0000.01317.04
7.0.260.0040.00717.07
7.0.250.0040.00417.00
7.0.240.0090.00917.20
7.0.230.0070.01017.04
7.0.220.0060.00617.05
7.0.210.0090.00617.11
7.0.200.0030.00716.90
7.0.190.0120.00617.20
7.0.180.0070.00716.98
7.0.170.0110.00017.07
7.0.160.0100.00317.13
7.0.150.0060.00917.14
7.0.140.0070.00717.02
7.0.130.0030.00717.04
7.0.120.0040.00817.00
7.0.110.0090.00617.05
7.0.100.0060.00617.00
7.0.90.0100.02218.52
7.0.80.0050.02418.46
7.0.70.0300.03718.42
7.0.60.0320.04918.47
7.0.50.0250.04018.55
7.0.40.0080.02517.53
7.0.30.0020.05317.62
7.0.20.0050.03017.56
7.0.10.0020.04817.51
7.0.00.0020.03117.55
5.6.400.0000.01216.18
5.6.390.0030.00716.06
5.6.380.0000.01015.70
5.6.370.0170.00015.89
5.6.360.0000.01116.10
5.6.350.0080.00815.87
5.6.340.0060.00615.82
5.6.330.0090.00616.13
5.6.320.0070.00716.00
5.6.310.0060.00615.71
5.6.300.0030.01316.06
5.6.290.0100.00315.91
5.6.280.0030.02018.43
5.6.270.0090.00616.15
5.6.260.0030.01315.80
5.6.250.0030.01016.04
5.6.240.0020.02818.38
5.6.230.0050.03218.29
5.6.220.0030.03118.27
5.6.210.0080.04418.19
5.6.200.0080.03818.58
5.6.190.0110.03518.45
5.6.180.0080.03918.42
5.6.170.0070.04118.47
5.6.160.0060.03318.50
5.6.150.0090.02418.67
5.6.140.0070.04418.39
5.6.130.0060.03218.49
5.6.120.0090.04018.48
5.6.110.0050.04818.57
5.6.100.0050.03218.58
5.6.90.0050.04318.43
5.6.80.0110.01818.13
5.6.70.0070.04418.19
5.6.60.0030.03018.15
5.6.50.0050.04518.24
5.6.40.0070.04318.19
5.6.30.0050.02818.21
5.6.20.0060.03918.14
5.6.10.0080.04518.20
5.6.00.0050.04618.15
5.5.380.0050.02318.18
5.5.370.0070.02018.18
5.5.360.0110.04218.25
5.5.350.0110.02018.18
5.5.340.0050.02418.40
5.5.330.0030.04518.25
5.5.320.0060.02818.33
5.5.310.0030.04418.48
5.5.300.0050.04318.44
5.5.290.0050.04718.24
5.5.280.0030.02718.36
5.5.270.0050.04818.53
5.5.260.0050.04818.15
5.5.250.0110.03518.27
5.5.240.0050.04418.10
5.5.230.0100.03818.09
5.5.220.0120.03018.00
5.5.210.0140.03718.12
5.5.200.0080.04018.10
5.5.190.0050.04517.99
5.5.180.0070.04817.95
5.5.170.0040.01115.98
5.5.160.0040.04118.01
5.5.150.0030.04518.05
5.5.140.0100.04218.04
5.5.130.0120.04018.16
5.5.120.0090.04218.08
5.5.110.0070.03218.01
5.5.100.0080.03117.79
5.5.90.0070.04118.04
5.5.80.0080.02317.92
5.5.70.0080.04318.00
5.5.60.0060.04617.88
5.5.50.0180.02917.88
5.5.40.0070.03117.83
5.5.30.0080.03918.01
5.5.20.0120.03517.99
5.5.10.0020.04818.03
5.5.00.0100.04217.94
5.4.450.0000.03016.05
5.4.440.0000.03016.10
5.4.430.0020.03415.98
5.4.420.0050.03716.00
5.4.410.0050.04415.94
5.4.400.0020.03015.87
5.4.390.0120.03215.87
5.4.380.0090.02215.90
5.4.370.0050.04415.95
5.4.360.0000.04615.90
5.4.350.0060.02515.63
5.4.340.0070.03715.86
5.4.330.0080.00312.59
5.4.320.0030.04015.93
5.4.310.0120.02915.87
5.4.300.0120.03715.78
5.4.290.0030.02515.79
5.4.280.0060.02815.84
5.4.270.0050.04015.94
5.4.260.0050.02615.82
5.4.250.0060.03115.88
5.4.240.0080.03715.77
5.4.230.0060.04015.71
5.4.220.0060.04315.72
5.4.210.0050.04315.79
5.4.200.0050.04415.93
5.4.190.0070.03815.65
5.4.180.0030.02916.02
5.4.170.0060.02515.76
5.4.160.0140.02515.80
5.4.150.0070.02515.96
5.4.140.0020.04314.38
5.4.130.0070.04014.40
5.4.120.0110.02714.46
5.4.110.0030.03214.49
5.4.100.0070.04014.49
5.4.90.0020.03414.42
5.4.80.0030.04314.54
5.4.70.0030.04214.43
5.4.60.0020.04514.43
5.4.50.0110.02014.41
5.4.40.0050.04114.65
5.4.30.0030.03914.43
5.4.20.0070.03714.42
5.4.10.0080.03314.46
5.4.00.0070.03114.08

preferences:
36.71 ms | 401 KiB | 5 Q