3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array("one"=>1,"two"=>2,"three"=>3); echo "-----\nPointer\n-----"; foreach($a as &$b) { var_dump( key($a) ); var_dump( current($a) ); } var_dump( key($a) ); var_dump( current($a) ); echo "-----\nNo pointer\n-----"; foreach($a as $b) { var_dump( key($a) ); var_dump( current($a) ); } var_dump( key($a) ); var_dump( current($a) );

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)
8.3.60.0160.00016.50
8.3.50.0100.00922.01
8.3.40.0090.00618.73
8.3.30.0090.00618.59
8.3.20.0040.00420.16
8.3.10.0000.00823.48
8.3.00.0040.00419.66
8.2.180.0140.00416.63
8.2.170.0120.00922.96
8.2.160.0090.00620.39
8.2.150.0000.00824.18
8.2.140.0030.00524.66
8.2.130.0060.00321.07
8.2.120.0050.00326.35
8.2.110.0030.00620.45
8.2.100.0060.00617.80
8.2.90.0030.00619.28
8.2.80.0040.00417.97
8.2.70.0070.00417.49
8.2.60.0070.00017.93
8.2.50.0030.00518.07
8.2.40.0040.00422.24
8.2.30.0040.00420.68
8.2.20.0040.00417.67
8.2.10.0030.00518.16
8.2.00.0080.00018.02
8.1.280.0140.00025.92
8.1.270.0040.00420.20
8.1.260.0000.00728.09
8.1.250.0080.00028.09
8.1.240.0060.00323.97
8.1.230.0060.00617.54
8.1.220.0000.00817.86
8.1.210.0060.00318.77
8.1.200.0040.00417.23
8.1.190.0080.00016.98
8.1.180.0080.00018.10
8.1.170.0060.00318.53
8.1.160.0000.00720.67
8.1.150.0070.00018.87
8.1.140.0080.00019.48
8.1.130.0000.00717.71
8.1.120.0040.00417.36
8.1.110.0000.00717.35
8.1.100.0000.00717.36
8.1.90.0000.00717.45
8.1.80.0030.00517.35
8.1.70.0080.00017.27
8.1.60.0070.00017.62
8.1.50.0060.00317.50
8.1.40.0030.00617.48
8.1.30.0030.00617.59
8.1.20.0040.00417.53
8.1.10.0050.00317.47
8.1.00.0040.00417.45
8.0.300.0070.00018.77
8.0.290.0070.00016.63
8.0.280.0000.00718.41
8.0.270.0000.00717.22
8.0.260.0050.00217.24
8.0.250.0040.00416.92
8.0.240.0040.00416.95
8.0.230.0000.00717.01
8.0.220.0000.00716.88
8.0.210.0000.00716.86
8.0.200.0030.00316.94
8.0.190.0040.00416.91
8.0.180.0080.00016.89
8.0.170.0030.00516.80
8.0.160.0000.00816.89
8.0.150.0000.00816.84
8.0.140.0000.00816.73
8.0.130.0000.00513.27
8.0.120.0080.00016.82
8.0.110.0000.00716.96
8.0.100.0030.00616.91
8.0.90.0000.00716.79
8.0.80.0070.00616.84
8.0.70.0020.00516.86
8.0.60.0040.00416.84
8.0.50.0070.00016.95
8.0.30.0120.00616.96
8.0.20.0100.00817.40
8.0.10.0000.00716.86
8.0.00.0130.00716.72
7.4.330.0020.00216.71
7.4.320.0000.00716.42
7.4.300.0000.00716.54
7.4.290.0000.00716.57
7.4.280.0030.00616.52
7.4.270.0040.00416.52
7.4.260.0000.00716.55
7.4.250.0070.00016.49
7.4.240.0030.00416.51
7.4.230.0030.00316.49
7.4.220.0090.00916.63
7.4.210.0030.01216.60
7.4.200.0040.00416.62
7.4.160.0110.00416.57
7.4.150.0100.00717.40
7.4.140.0080.01417.86
7.4.130.0130.00716.55
7.4.120.0130.00416.44
7.4.110.0100.00716.38
7.4.100.0110.00716.44
7.4.90.0130.00316.45
7.4.80.0110.00519.39
7.4.70.0140.00316.43
7.4.60.0030.01316.51
7.4.50.0120.00516.59
7.4.40.0130.00716.36
7.4.30.0100.01416.43
7.4.00.0070.01014.78
7.3.330.0050.00013.04
7.3.320.0000.00713.10
7.3.310.0070.00016.14
7.3.300.0040.00416.18
7.3.290.0070.01116.20
7.3.280.0060.01216.30
7.3.270.0080.00817.40
7.3.260.0090.00816.36
7.3.240.0060.01116.32
7.3.230.0040.01316.39
7.3.210.0120.00316.39
7.3.200.0060.01016.26
7.3.190.0070.01316.50
7.3.180.0100.01016.20
7.3.170.0100.00716.54
7.3.160.0150.00616.66
7.3.120.0090.00614.81
7.3.110.0130.00314.83
7.3.100.0060.01014.67
7.3.90.0030.00814.87
7.3.80.0000.01715.01
7.3.70.0100.00014.86
7.3.60.0070.00714.68
7.3.50.0030.01014.95
7.3.40.0100.00614.89
7.3.30.0030.00614.83
7.3.20.0030.00916.61
7.3.10.0100.00316.43
7.3.00.0000.01216.66
7.2.330.0100.00916.72
7.2.320.0100.01316.62
7.2.310.0080.00816.65
7.2.300.0080.01116.47
7.2.290.0060.01116.79
7.2.250.0090.00914.86
7.2.240.0070.01315.12
7.2.230.0160.00014.57
7.2.220.0090.00414.75
7.2.210.0000.01714.68
7.2.200.0060.00614.75
7.2.190.0040.00714.77
7.2.180.0040.00714.91
7.2.170.0040.00714.97
7.2.60.0100.00316.53
7.2.00.0170.00319.50
7.1.330.0130.00015.87
7.1.320.0000.01315.89
7.1.310.0120.00615.87
7.1.300.0090.00615.78
7.1.290.0090.00915.81
7.1.280.0030.00915.80
7.1.270.0140.00015.49
7.1.260.0000.01415.81
7.1.200.0060.00615.82
7.1.100.0040.01117.94
7.1.70.0030.00616.86
7.1.60.0100.01619.44
7.1.50.0030.01416.81
7.1.00.0070.07022.43
7.0.200.0000.00716.63
7.0.60.0070.03719.90
7.0.50.0000.05317.88
7.0.40.0030.04720.04
7.0.30.0400.08020.13
7.0.20.0270.06019.99
7.0.10.0170.05320.19
7.0.00.0070.08320.00
5.6.280.0030.05720.93
5.6.210.0070.07720.43
5.6.200.0130.06318.13
5.6.190.0070.05320.48
5.6.180.0270.05020.56
5.6.170.0230.04720.45
5.6.160.0130.07320.46
5.6.150.0100.04318.11
5.6.140.0000.04318.18
5.6.130.0070.05718.21
5.6.120.0170.04321.14
5.6.110.0070.06020.98
5.6.100.0030.08721.00
5.6.90.0000.05021.10
5.6.80.0030.08020.37
5.5.350.0130.07720.39
5.5.340.0100.08017.95
5.5.330.0100.05020.43
5.5.320.0530.07020.51
5.5.310.0270.06320.26
5.5.300.0030.05318.00
5.5.290.0000.06317.92
5.5.280.0170.07020.88
5.5.270.0130.05320.86
5.5.260.0200.07720.95
5.5.250.0070.08020.57
5.5.240.0300.04320.15

preferences:
45.63 ms | 401 KiB | 5 Q