3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = array( 'a' => 'abc', 'b' => 'def', 'c' => 'ghi' ); foreach ($var as $key => &$val) { $val = $key . ':' . 'aaa'; } $compiled = array(); foreach ($var as $key => $val) { echo "{$key} = {$val}\n"; $compiled[] = $key . '=' . $val; } print_r($compiled);

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)
8.3.60.0120.00318.48
8.3.50.0060.00916.36
8.3.40.0070.00718.58
8.3.30.0130.00619.10
8.3.20.0080.00020.16
8.3.10.0050.00323.57
8.3.00.0000.00819.19
8.2.180.0110.00416.38
8.2.170.0090.00622.96
8.2.160.0070.00720.35
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0000.00726.16
8.2.120.0080.00021.02
8.2.110.0030.00619.14
8.2.100.0110.00017.63
8.2.90.0090.00019.24
8.2.80.0030.00617.97
8.2.70.0040.00417.50
8.2.60.0050.00317.93
8.2.50.0040.00418.07
8.2.40.0000.00718.34
8.2.30.0080.00018.00
8.2.20.0000.00817.66
8.2.10.0040.00418.13
8.2.00.0000.00818.12
8.1.270.0050.00224.66
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0040.00422.75
8.1.230.0050.00517.48
8.1.220.0050.00317.76
8.1.210.0060.00318.77
8.1.200.0060.00317.35
8.1.190.0040.00417.35
8.1.180.0040.00418.10
8.1.170.0030.00620.28
8.1.160.0000.00721.91
8.1.150.0070.00018.94
8.1.140.0030.00517.41
8.1.130.0080.00017.82
8.1.120.0070.00017.45
8.1.110.0050.00317.46
8.1.100.0070.00017.41
8.1.90.0050.00317.38
8.1.80.0000.00717.47
8.1.70.0000.00717.39
8.1.60.0040.00417.57
8.1.50.0030.00517.41
8.1.40.0000.00817.48
8.1.30.0040.00417.62
8.1.20.0070.00317.57
8.1.10.0040.00417.45
8.1.00.0000.00717.29
8.0.300.0080.00018.77
8.0.290.0000.00716.75
8.0.280.0000.00718.49
8.0.270.0070.00017.16
8.0.260.0030.00317.25
8.0.250.0030.00316.84
8.0.240.0030.00317.01
8.0.230.0070.00017.02
8.0.220.0030.00316.94
8.0.210.0000.00716.91
8.0.200.0060.00016.84
8.0.190.0000.00817.00
8.0.180.0020.00516.84
8.0.170.0000.00816.80
8.0.160.0040.00416.92
8.0.150.0000.00816.90
8.0.140.0030.00316.82
8.0.130.0000.00613.31
8.0.120.0000.00716.80
8.0.110.0000.00816.94
8.0.100.0000.00816.90
8.0.90.0000.00716.88
8.0.80.0080.00816.86
8.0.70.0000.00816.91
8.0.60.0050.00217.01
8.0.50.0030.00516.87
8.0.30.0090.00917.16
8.0.20.0090.01017.40
8.0.10.0080.00016.89
8.0.00.0070.01016.71
7.4.330.0060.00015.09
7.4.320.0030.00316.47
7.4.300.0060.00016.52
7.4.290.0000.00716.58
7.4.280.0050.00516.45
7.4.270.0050.00216.63
7.4.260.0050.00316.59
7.4.250.0040.00416.46
7.4.240.0050.00216.53
7.4.230.0070.00016.51
7.4.220.0100.01016.63
7.4.210.0060.00916.49
7.4.200.0030.00316.43
7.4.160.0070.00716.62
7.4.150.0140.00317.40
7.4.140.0110.01117.86
7.4.130.0130.00516.62
7.4.120.0130.00516.60
7.4.110.0140.01116.50
7.4.100.0150.00616.72
7.4.90.0130.00416.64
7.4.80.0150.00919.39
7.4.70.0060.01116.41
7.4.60.0090.00916.45
7.4.50.0030.00316.34
7.4.40.0140.00716.32
7.4.30.0090.00916.43
7.4.00.0090.00314.94
7.3.330.0000.00513.16
7.3.320.0030.00313.19
7.3.310.0000.00716.22
7.3.300.0000.00616.23
7.3.290.0080.00616.33
7.3.280.0090.00616.32
7.3.270.0070.01117.40
7.3.260.0140.00416.29
7.3.250.0100.00816.47
7.3.240.0100.00616.59
7.3.230.0080.00816.39
7.3.210.0140.00416.67
7.3.200.0070.01019.39
7.3.190.0130.00616.44
7.3.180.0120.00316.36
7.3.170.0150.00416.27
7.3.160.0170.00016.27
7.2.330.0150.00416.67
7.2.320.0150.00316.49
7.2.310.0100.00716.75
7.2.300.0140.00316.43
7.2.290.0070.01716.68
7.2.60.0100.00716.80
7.2.00.0000.01319.02
7.1.200.0030.00915.62
7.1.100.0030.00818.15
7.1.70.0030.00717.23
7.1.60.0090.01219.48
7.1.50.0160.00916.68
7.1.00.0030.07722.36
7.0.200.0040.00416.93
7.0.60.0130.08019.86
7.0.50.0130.07717.89
7.0.40.0130.03720.40
7.0.30.0270.05320.10
7.0.20.0100.04720.20
7.0.10.0300.08320.19
7.0.00.0030.06020.16
5.6.280.0030.07321.15
5.6.210.0070.08020.76
5.6.200.0000.08718.19
5.6.190.0070.08320.64
5.6.180.3470.03720.33
5.6.170.0530.06020.51
5.6.160.0070.04020.55
5.6.150.0000.05018.17
5.6.140.0170.04018.11
5.6.130.0070.04018.11
5.6.120.0070.08320.89
5.6.110.0000.04321.00
5.6.100.0100.06020.96
5.6.90.0100.08321.13
5.6.80.0100.07720.36
5.6.70.0370.07320.34
5.5.350.0270.07720.38
5.5.340.0000.04017.95
5.5.330.0170.04720.40
5.5.320.0200.05020.19
5.5.310.0330.07320.37
5.5.300.0030.05318.08
5.5.290.0070.06317.99
5.5.280.0030.04020.77
5.5.270.0100.08320.97
5.5.260.0100.06320.79
5.5.250.0100.05720.61
5.5.240.0070.08320.18
5.4.450.0130.03719.57
5.4.440.0630.05719.54
5.4.430.0730.05019.57
5.4.420.0700.00019.54
5.4.410.0630.00019.41
5.4.400.0600.00019.13
5.4.390.0670.00019.13
5.4.380.0800.00019.06
5.4.370.0800.00019.15
5.4.360.0700.00019.03
5.4.350.0700.00019.07
5.4.340.0600.00019.26
5.4.320.0600.00019.25
5.4.310.0600.00018.98
5.4.300.0730.00019.24
5.4.290.0600.00019.06
5.4.280.0570.00019.02
5.4.270.0600.00018.98
5.4.260.0600.00019.23
5.4.250.0630.00019.21
5.4.240.0630.00019.05
5.4.230.0570.00019.11
5.4.220.0600.00019.01
5.4.210.0600.00019.11
5.4.200.0570.00016.86
5.4.190.0570.00019.00
5.4.180.0600.00019.06
5.4.170.0700.00019.00
5.4.160.0600.00018.96
5.4.150.0600.00019.01
5.4.140.0570.00016.63
5.4.130.0530.00016.58
5.4.120.0530.00016.66
5.4.110.0570.00016.24
5.4.100.0630.00016.57
5.4.90.0570.00016.58
5.4.80.0570.00016.63
5.4.70.0570.00016.44
5.4.60.0630.00016.25
5.4.50.0600.00016.44
5.4.40.0570.00016.45
5.4.30.0570.00016.55
5.4.20.0570.00016.55
5.4.10.0530.00016.59
5.4.00.0600.00015.91
5.3.290.0730.00014.77
5.3.280.0730.00014.75
5.3.270.0630.00014.60
5.3.260.0730.00014.67
5.3.250.0570.00014.66
5.3.240.0600.00014.56
5.3.230.0600.00014.60
5.3.220.0600.00014.59
5.3.210.0770.00014.49
5.3.200.0570.00014.58
5.3.190.0600.00014.41
5.3.180.0570.00014.56
5.3.170.0630.00014.48
5.3.160.0570.00014.68
5.3.150.0600.00014.63
5.3.140.0570.00014.61
5.3.130.0670.00014.54
5.3.120.0730.00014.70
5.3.110.0630.00014.57
5.3.100.0570.00014.01
5.3.90.0570.00014.09
5.3.80.0570.00014.18
5.3.70.0570.00014.02
5.3.60.0570.00013.91
5.3.50.0570.00013.90
5.3.40.0570.00014.08
5.3.30.0530.00013.97
5.3.20.0530.00013.79
5.3.10.0570.00013.81
5.3.00.0570.00013.48
5.2.170.0470.00011.20
5.2.160.0430.00011.05
5.2.150.0470.00011.06
5.2.140.0470.00011.29
5.2.130.0500.00011.08
5.2.120.0470.00011.04
5.2.110.0470.00011.27
5.2.100.0470.00011.08
5.2.90.0530.00011.28
5.2.80.0500.00011.07
5.2.70.0470.00011.25
5.2.60.0470.00010.99
5.2.50.0430.00011.02
5.2.40.0430.00010.95
5.2.30.0470.00010.89
5.2.20.0430.00011.02
5.2.10.0470.00010.70
5.2.00.0470.00010.61
5.1.60.0370.0009.92
5.1.50.0430.0009.91
5.1.40.0430.00010.06
5.1.30.0530.00010.43
5.1.20.0400.00010.37
5.1.10.0400.00010.10
5.1.00.0400.0009.99
5.0.50.0370.0008.46
5.0.40.0300.0008.50
5.0.30.0470.0008.13
5.0.20.0300.0008.11
5.0.10.0330.0008.23
5.0.00.0570.0008.21
4.4.90.0330.0005.87
4.4.80.0330.0005.75
4.4.70.0300.0005.76
4.4.60.0270.0005.80
4.4.50.0230.0005.87
4.4.40.0370.0005.82
4.4.30.0230.0005.73
4.4.20.0230.0005.90
4.4.10.0230.0005.87
4.4.00.0370.0005.89
4.3.110.0230.0005.78
4.3.100.0230.0005.77
4.3.90.0230.0005.65
4.3.80.0330.0005.65
4.3.70.0230.0005.74
4.3.60.0230.0005.77
4.3.50.0230.0005.64
4.3.40.0330.0005.76
4.3.30.0300.0004.55
4.3.20.0300.0004.40
4.3.10.0230.0004.35
4.3.00.0000.01715.68

preferences:
66.06 ms | 400 KiB | 5 Q