3v4l.org

run code in 300+ PHP versions simultaneously
<?php define('MAX_LOOPS',6); function withRefValue($elements, $transform) { echo "\n---( Array with $elements element(s): )---\n"; //Build array: for ($i=0; $i<$elements; $i++) { $a[] = "v.$i"; } $counter=0; echo "--> State of array before loop:\n"; var_dump($a); echo "--> Do loop:\n"; foreach ($a as $k=>&$v) { echo " iteration $counter: \$k=$k; \$v=$v\n"; eval($transform); $counter++; if ($counter>MAX_LOOPS) { echo " ** Stuck in a loop! **\n"; break; } } echo "--> State of array after loop:\n"; var_dump($a); } echo "\nPopping elements off end of an unreferenced array, using &\$value."; $transform = 'array_pop($a);'; withRefValue(1, $transform); withRefValue(2, $transform); withRefValue(3, $transform); withRefValue(4, $transform); withRefValue(5, $transform);

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)
8.3.60.0090.00616.50
8.3.50.0120.00922.89
8.3.40.0090.00618.84
8.3.30.0100.00719.07
8.3.20.0040.00420.13
8.3.10.0080.00023.52
8.3.00.0060.00317.59
8.2.180.0110.00416.63
8.2.170.0140.00722.96
8.2.160.0110.00420.35
8.2.150.0080.00024.18
8.2.140.0050.00224.66
8.2.130.0070.00726.16
8.2.120.0060.00321.02
8.2.110.0060.00322.11
8.2.100.0060.00619.57
8.2.90.0080.00019.15
8.2.80.0000.00817.97
8.2.70.0080.00417.50
8.2.60.0060.00317.93
8.2.50.0050.00318.07
8.2.40.0050.00318.28
8.2.30.0060.00318.16
8.2.20.0000.00717.72
8.2.10.0040.00418.05
8.2.00.0040.00417.78
8.1.280.0110.00425.92
8.1.270.0050.00323.79
8.1.260.0090.00026.35
8.1.250.0080.00028.09
8.1.240.0000.01023.97
8.1.230.0040.00819.05
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0090.00017.23
8.1.190.0040.00417.24
8.1.180.0030.00718.10
8.1.170.0030.00718.61
8.1.160.0050.00221.98
8.1.150.0030.00518.80
8.1.140.0000.00717.41
8.1.130.0030.00317.72
8.1.120.0070.00017.41
8.1.110.0000.00717.52
8.1.100.0050.00317.49
8.1.90.0030.00317.33
8.1.80.0040.00417.47
8.1.70.0040.00417.43
8.1.60.0000.00817.61
8.1.50.0030.00517.45
8.1.40.0040.00417.48
8.1.30.0030.00517.66
8.1.20.0060.00617.74
8.1.10.0000.00817.60
8.1.00.0080.00017.51
8.0.300.0000.00918.77
8.0.290.0000.00816.75
8.0.280.0040.00418.53
8.0.270.0030.00317.29
8.0.260.0030.00317.33
8.0.250.0080.00016.93
8.0.240.0050.00316.88
8.0.230.0050.00217.01
8.0.220.0030.00316.93
8.0.210.0040.00416.99
8.0.200.0040.00416.94
8.0.190.0000.00817.02
8.0.180.0000.00716.98
8.0.170.0030.00616.94
8.0.160.0080.00016.79
8.0.150.0000.00816.93
8.0.140.0040.00416.86
8.0.130.0060.00013.44
8.0.120.0000.00816.91
8.0.110.0050.00216.75
8.0.100.0070.00016.95
8.0.90.0040.00416.73
8.0.80.0190.00316.84
8.0.70.0050.00316.96
8.0.60.0000.00916.91
8.0.50.0000.00716.95
8.0.30.0150.00617.10
8.0.20.0160.01117.40
8.0.10.0000.00717.04
8.0.00.0040.01516.86
7.4.330.0050.00315.00
7.4.320.0000.00616.64
7.4.300.0030.00316.60
7.4.290.0050.00316.57
7.4.280.0060.00316.60
7.4.270.0000.00716.67
7.4.260.0000.00916.61
7.4.250.0070.00016.48
7.4.240.0030.00416.58
7.4.230.0050.00316.61
7.4.220.0100.01016.70
7.4.210.0060.01216.54
7.4.200.0040.00416.64
7.4.160.0100.01016.40
7.4.150.0130.00817.40
7.4.140.0080.01117.86
7.4.130.0060.01816.48
7.4.120.0100.00816.42
7.4.110.0120.00616.56
7.4.100.0100.01016.55
7.4.90.0060.01416.45
7.4.80.0030.01519.39
7.4.70.0060.01316.52
7.4.60.0090.00916.43
7.4.50.0030.00616.55
7.4.40.0060.01116.56
7.4.30.0100.00816.69
7.4.00.0120.00314.84
7.3.330.0000.00513.38
7.3.320.0020.00213.25
7.3.310.0070.00016.49
7.3.300.0000.00716.34
7.3.290.0150.00316.39
7.3.280.0030.01316.39
7.3.270.0090.00917.40
7.3.260.0070.01416.42
7.3.240.0100.00716.48
7.3.230.0080.00816.63
7.3.210.0130.00416.54
7.3.200.0070.01019.39
7.3.190.0150.00616.38
7.3.180.0100.00716.38
7.3.170.0100.00716.51
7.3.160.0070.01016.41
7.2.330.0110.00816.49
7.2.320.0210.00016.68
7.2.310.0120.00616.63
7.2.300.0070.01116.84
7.2.290.0050.01416.80
7.2.80.0110.00016.54
7.2.60.0060.00916.84
7.1.200.0000.00815.94
7.1.70.0030.00717.21
7.1.60.0040.01519.40
7.1.50.0030.01217.03
7.1.00.0070.06322.51
7.0.200.0070.00316.64
7.0.140.0130.06722.18
7.0.60.0100.07320.04
7.0.50.0030.07317.91
7.0.40.0130.08020.20
7.0.30.0230.08020.19
7.0.20.0170.04020.23
7.0.10.0030.05020.15
7.0.00.0100.08720.16
5.6.210.0130.07320.68
5.6.200.0170.07018.18
5.6.190.0100.08720.66
5.6.180.0100.05020.57
5.6.170.0170.05720.44
5.6.160.0030.04320.46
5.6.150.0030.06318.16
5.6.140.0130.07718.29
5.6.130.0070.08018.12
5.6.120.0170.07320.99
5.6.110.0070.06720.99
5.6.100.0100.08321.12
5.6.90.0130.08021.13
5.6.80.0130.07020.36
5.5.350.0070.09020.50
5.5.340.0130.04318.02
5.5.330.0100.09020.27
5.5.320.0030.08720.35
5.5.310.0270.06320.36
5.5.300.0170.07017.97
5.5.290.0070.04318.06
5.5.280.0000.09720.74
5.5.270.0100.08320.84
5.5.260.0100.08020.80
5.5.250.0170.06720.65
5.5.240.0230.07320.13
5.4.450.0230.06719.48
5.4.440.0270.07319.18
5.4.430.0270.05719.64
5.4.420.0400.06019.40
5.4.410.0330.05319.14
5.4.400.0300.06719.09
5.4.390.0270.07018.99
5.4.380.0170.05019.23
5.4.370.0270.04318.99
5.4.360.0200.07718.98
5.4.350.0230.07019.13
5.4.340.0370.06719.32
5.4.320.0270.06319.22
5.4.310.0270.06318.96
5.4.300.0230.05319.22
5.4.290.0330.06319.16
5.4.280.0230.07319.22
5.4.270.0230.06019.15
5.4.260.0200.05319.09
5.4.250.0230.06019.30
5.4.240.0230.07319.19
5.4.230.0330.06318.84
5.4.220.0230.06318.98
5.4.210.0370.04318.94
5.4.200.0270.07719.06
5.4.190.0200.07019.07
5.4.180.0300.05719.13
5.4.170.0270.04719.07
5.4.160.0270.06718.86
5.4.150.0270.04319.04
5.4.140.0230.06716.41
5.4.130.0300.06716.51
5.4.120.0300.06316.46
5.4.110.0270.06716.56
5.4.100.0200.06716.32
5.4.90.0330.05316.57
5.4.80.0200.07316.54
5.4.70.0170.06016.57
5.4.60.0230.07316.54
5.4.50.0230.07316.55
5.4.40.0330.05716.34
5.4.30.0230.06316.25
5.4.20.0230.07316.42
5.4.10.0230.07316.50
5.4.00.0270.07015.99
5.3.290.0330.06714.72
5.3.280.0200.04714.61
5.3.270.0300.06314.70
5.3.260.0270.06714.52
5.3.250.0270.07014.70
5.3.240.0230.07314.52
5.3.230.0300.06714.53
5.3.220.0270.07314.48
5.3.210.0200.07714.49
5.3.200.0270.07014.55
5.3.190.0170.04014.74
5.3.180.0230.07714.59
5.3.170.0270.06314.60
5.3.160.0200.04014.48
5.3.150.0270.03314.49
5.3.140.0270.04714.48
5.3.130.0270.07014.55
5.3.120.0230.06714.50
5.3.110.0230.07014.54
5.3.100.0300.05313.96
5.3.90.0200.04714.13
5.3.80.0270.05314.00
5.3.70.0270.03714.04
5.3.60.0230.04713.99
5.3.50.0300.02713.89
5.3.40.0270.04014.04
5.3.30.0230.03314.04
5.3.20.0130.07013.68
5.3.10.0300.04713.60
5.3.00.0230.05713.63
5.2.170.0200.03712.16
5.2.160.0230.04312.16
5.2.150.0130.03312.16
5.2.140.0170.04312.16
5.2.130.0200.05312.16
5.2.120.0130.05312.16
5.2.110.0200.05012.16
5.2.100.0170.02712.16
5.2.90.0100.03712.16
5.2.80.0100.03312.16
5.2.70.0200.04312.16
5.2.60.0230.03712.16
5.2.50.0230.05012.16
5.2.40.0130.06012.16
5.2.30.0230.05012.16
5.2.20.0130.04712.16
5.2.10.0170.05012.16
5.2.00.0170.06012.16
5.1.60.0170.04312.16
5.1.50.0170.05312.16
5.1.40.0200.04712.16
5.1.30.0170.05712.16
5.1.20.0130.05712.16
5.1.10.0200.05312.16
5.1.00.0200.03312.16
5.0.50.0100.04012.16
5.0.40.0030.04012.16
5.0.30.0030.03712.16
5.0.20.0130.04012.16
5.0.10.0100.04312.16
5.0.00.0100.04312.16
4.4.90.0130.02312.16
4.4.80.0130.03012.16
4.4.70.0030.02712.16
4.4.60.0070.02712.16
4.4.50.0100.03012.16
4.4.40.0070.04012.16
4.4.30.0130.02012.16
4.4.20.0130.01712.16
4.4.10.0100.03312.16
4.4.00.0070.05712.16
4.3.110.0030.02312.16
4.3.100.0030.03012.16
4.3.90.0130.01712.16
4.3.80.0100.05012.16
4.3.70.0070.03012.16
4.3.60.0100.02012.16
4.3.50.0070.03312.16
4.3.40.0130.03712.16
4.3.30.0070.02712.16
4.3.20.0000.03712.16
4.3.10.0070.03012.16
4.3.00.0030.02712.16

preferences:
47.29 ms | 400 KiB | 5 Q