3v4l.org

run code in 300+ PHP versions simultaneously
<?php phpversion() >= "7.0.1" or die(); $obj = new stdClass(); $obj->bar = "abc"; $data = array("foo" => "bar"); $key = "foo"; // the bad: try { echo @$obj->${data[$key]}; // syntax error } catch (Error $e){ echo $e->getMessage(),"\n"; } // uvs - the good: without and within a string echo $obj->{$data[$key]},"\n"; echo "{$obj->{$data[$key]}}\n"; $obj->bar = "xyz"; // uvs - complex curly brace syntax: without and within a string echo $obj->{${'data'}[$key]},"\n"; echo "{$obj->{${'data'}[$key]}}\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)
7.3.120.0070.01114.65
7.3.110.0100.00315.07
7.3.100.0070.01014.85
7.3.90.0060.01014.96
7.3.80.0070.00314.63
7.3.70.0030.01214.95
7.3.60.0000.01414.80
7.3.50.0120.00314.59
7.3.40.0070.00314.63
7.3.30.0080.00614.71
7.3.20.0090.00416.82
7.3.10.0060.00916.64
7.3.00.0000.01516.50
7.2.240.0030.01314.86
7.2.230.0060.00915.18
7.2.220.0120.00415.34
7.2.210.0030.01314.85
7.2.200.0040.00715.06
7.2.190.0090.00615.10
7.2.180.0030.01215.14
7.2.170.0100.00715.10
7.2.160.0100.00715.05
7.2.150.0030.01217.10
7.2.140.0070.00317.10
7.2.130.0000.01716.87
7.2.120.0060.00916.85
7.2.110.0030.01316.98
7.2.100.0030.01516.73
7.2.90.0100.00316.88
7.2.80.0090.00616.84
7.2.70.0000.01716.90
7.2.60.0040.00816.97
7.2.50.0070.01116.89
7.2.40.0070.01016.94
7.2.30.0060.01216.73
7.2.20.0000.01116.91
7.2.10.0030.01216.75
7.2.00.0080.00618.18
7.1.330.0000.01015.71
7.1.320.0090.00316.02
7.1.310.0070.01015.80
7.1.300.0100.00715.66
7.1.290.0030.01015.71
7.1.280.0030.00915.58
7.1.270.0080.00815.90
7.1.260.0130.00015.78
7.1.250.0030.01215.98
7.1.200.0040.00815.46
7.1.100.0040.01518.02
7.1.70.0000.01617.28
7.1.60.0040.01119.30
7.1.50.0080.00416.63
7.1.00.0070.06722.45
7.0.200.0000.01016.77
7.0.100.0370.08019.96
7.0.90.0200.07719.91
7.0.80.0600.08019.85
7.0.70.0430.08019.88
7.0.60.0470.07019.92
7.0.50.0430.06320.31
7.0.40.0100.08020.05
7.0.30.0070.08320.03
7.0.20.0100.04320.14
7.0.10.0070.07720.02
7.0.00.0100.05719.99
5.6.280.0030.05721.13
5.6.250.0030.07320.45
5.6.240.0170.07320.62
5.6.230.0030.07320.57
5.6.220.0070.08320.53
5.6.210.0070.06720.65
5.6.200.0000.08321.04
5.6.190.0230.07020.91
5.6.180.0100.04721.11
5.6.170.0070.08021.00
5.6.160.0030.08321.02
5.6.150.0130.07320.91
5.6.140.0070.08321.05
5.6.130.0130.07720.97
5.6.120.0000.05021.05
5.6.110.0100.06320.94
5.6.100.0030.08321.01
5.6.90.0130.04721.10
5.6.80.0000.08320.34
5.6.70.0030.05320.38
5.6.60.0100.07320.38
5.6.50.0030.08320.50
5.6.40.0030.08020.33
5.6.30.0070.07320.34
5.6.20.0070.06320.32
5.6.10.0100.06320.38
5.6.00.0130.07320.23
5.5.380.0100.03320.34
5.5.370.0100.08320.45
5.5.360.0130.07720.32
5.5.350.0070.05020.37
5.5.340.0000.08720.82
5.5.330.0130.08320.79
5.5.320.0130.07720.84
5.5.310.0070.08320.58
5.5.300.0100.08020.84
5.5.290.0000.08720.84
5.5.280.0170.07020.77
5.5.270.0170.04020.71
5.5.260.0030.06720.83
5.5.250.0130.06320.52
5.5.240.0130.06720.23
5.5.230.0100.06720.09
5.5.220.0130.07020.17
5.5.210.0030.05320.19
5.5.200.0070.07720.13
5.5.190.0070.06720.14
5.5.180.0100.06720.17
5.5.160.0070.05720.18
5.5.150.0070.05319.91
5.5.140.0000.04320.16
5.5.130.0030.04020.18
5.5.120.0130.03020.02
5.5.110.0000.04320.09
5.5.100.0000.04320.05
5.5.90.0070.03320.02
5.5.80.0070.04020.11
5.5.70.0030.03720.11
5.5.60.0070.03720.04
5.5.50.0030.04320.04
5.5.40.0000.04020.10
5.5.30.0070.05020.04
5.5.20.0030.05019.94
5.5.10.0070.03320.02
5.5.00.0070.07720.00

preferences:
40.02 ms | 401 KiB | 5 Q