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"; 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)
7.4.00.0100.01014.92
7.3.120.0090.00914.89
7.3.110.0140.00314.45
7.3.100.0090.00614.64
7.3.90.0070.00714.54
7.3.80.0090.00914.84
7.3.70.0040.00415.00
7.3.60.0080.00814.88
7.3.50.0000.01014.62
7.3.40.0030.01214.95
7.3.30.0070.01014.90
7.3.20.0030.00816.50
7.3.10.0090.00616.72
7.3.00.0100.00716.73
7.2.250.0120.00614.98
7.2.240.0070.01115.33
7.2.230.0030.01015.33
7.2.220.0090.00615.06
7.2.210.0030.01014.99
7.2.200.0040.01114.87
7.2.190.0040.01215.13
7.2.180.0000.01215.21
7.2.170.0060.01015.11
7.2.60.0230.00816.33
7.2.00.0000.01319.36
7.1.330.0100.00615.82
7.1.320.0070.01115.89
7.1.310.0030.00615.71
7.1.300.0030.00615.77
7.1.290.0070.00815.80
7.1.280.0060.00615.79
7.1.270.0040.00815.86
7.1.260.0030.01315.51
7.1.200.0060.00615.66
7.1.100.0140.00318.11
7.1.70.0000.00917.23
7.1.60.0100.01619.30
7.1.50.0030.00717.05
7.1.00.0100.07022.41
7.0.200.0030.00716.64
7.0.80.0130.07320.04
7.0.70.0030.06320.00
7.0.60.0070.08319.95
7.0.50.0030.08720.41
7.0.40.0100.05320.09
7.0.30.0170.07720.17
7.0.20.0130.08019.99
7.0.10.0070.08720.14
7.0.00.0030.05020.05
5.6.280.0070.04721.02
5.6.230.0070.08020.65
5.6.220.0030.05020.61
5.6.210.0030.05720.76
5.6.200.0130.08021.04
5.6.190.0130.07721.00
5.6.180.0000.09321.05
5.6.170.0130.07321.00
5.6.160.0130.03321.13
5.6.150.0170.06721.02
5.6.140.0100.07720.95
5.6.130.0070.07021.04
5.6.120.0070.08721.13
5.6.110.0070.06021.09
5.6.100.0130.06321.03
5.6.90.0030.05320.89
5.6.80.0070.04020.41
5.6.70.0100.07320.50
5.6.60.0100.08020.43
5.6.50.0170.06720.41
5.6.40.0100.06320.44
5.6.30.0070.05020.38
5.6.20.0170.07320.42
5.6.10.0030.05020.39
5.6.00.0100.08020.25
5.5.370.0100.07720.36
5.5.360.0030.05020.41
5.5.350.0070.07720.40
5.5.340.0070.08020.64
5.5.330.0000.07320.75
5.5.320.0030.08020.77
5.5.310.0070.06020.77
5.5.300.0070.06020.82
5.5.290.0100.08720.79
5.5.280.0130.07720.79
5.5.270.0130.07320.89
5.5.260.0200.05720.77
5.5.250.0030.04320.69
5.5.240.0070.07720.18
5.5.230.0170.07020.16
5.5.220.0270.05719.98
5.5.210.0100.08020.25
5.5.200.0170.07020.00
5.5.190.0100.07720.22
5.5.180.0030.08320.08
5.5.160.0130.07020.23
5.5.150.0100.04020.23
5.5.140.0030.05320.26
5.5.130.0130.07320.16
5.5.120.0100.05720.11
5.5.110.0170.07320.23
5.5.100.0070.06720.10
5.5.90.0200.06720.01
5.5.80.0100.07020.14
5.5.70.0070.05020.00
5.5.60.0100.04320.09
5.5.50.0100.07320.15
5.5.40.0030.08020.05
5.5.30.0070.07719.95
5.5.20.0070.08320.09
5.5.10.0070.08319.95
5.5.00.0100.06720.03

preferences:
36.37 ms | 400 KiB | 5 Q