3v4l.org

run code in 300+ PHP versions simultaneously
<?php phpversion() >= "7.0.1" or die(); $obj = new stdClass(); $obj->bar = "xyz"; $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 = "abc"; // 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)
7.4.10.0110.01116.41
7.4.00.0070.01015.89
7.3.130.0040.01516.26
7.3.120.0080.01115.53
7.3.110.0020.01615.78
7.3.100.0070.00715.62
7.3.90.0050.00715.76
7.3.80.0050.01015.56
7.3.70.0070.00715.49
7.3.60.0060.00715.63
7.3.50.0070.00415.57
7.3.40.0100.00715.64
7.3.30.0080.00515.51
7.3.20.0080.00817.44
7.3.10.0080.00417.04
7.3.00.0070.00616.97
7.2.260.0110.01116.77
7.2.250.0050.01515.86
7.2.240.0100.00515.95
7.2.230.0050.01115.82
7.2.220.0080.00615.93
7.2.210.0090.00615.80
7.2.200.0070.00715.74
7.2.190.0030.00915.91
7.2.180.0060.00815.95
7.2.170.0060.00915.91
7.2.160.0070.00316.65
7.2.150.0070.00718.48
7.2.140.0090.00618.34
7.2.130.0100.00417.52
7.2.120.0060.00917.30
7.2.110.0060.01017.25
7.2.100.0040.01017.41
7.2.90.0070.00717.36
7.2.80.0080.01117.25
7.2.70.0040.01117.26
7.2.60.0100.00817.27
7.2.50.0070.00717.38
7.2.40.0090.00617.35
7.2.30.0070.00617.34
7.2.20.0080.00617.46
7.2.10.0080.00617.40
7.2.00.0070.00917.89
7.1.330.0040.01016.61
7.1.320.0060.00616.59
7.1.310.0030.01116.32
7.1.300.0030.00616.56
7.1.290.0050.01016.55
7.1.280.0050.01216.56
7.1.270.0080.00816.55
7.1.260.0050.00716.38
7.1.250.0070.00415.99
7.1.240.0040.00616.45
7.1.230.0030.00816.53
7.1.220.0080.00516.60
7.1.210.0080.00216.42
7.1.200.0040.00816.11
7.1.190.0070.00716.52
7.1.180.0020.01116.48
7.1.170.0060.00816.40
7.1.160.0060.00716.46
7.1.150.0020.01116.64
7.1.140.0010.00816.48
7.1.130.0030.01116.47
7.1.120.0080.00816.58
7.1.110.0060.00716.45
7.1.100.0070.00817.09
7.1.90.0050.00916.36
7.1.80.0040.00716.50
7.1.70.0060.00816.71
7.1.60.0060.01217.44
7.1.50.0070.00616.72
7.1.40.0140.00216.38
7.1.30.0050.00716.35
7.1.20.0010.00816.57
7.1.10.0070.00716.45
7.1.00.0040.03218.39
7.0.330.0080.00316.07
7.0.320.0050.00716.28
7.0.310.0070.00716.02
7.0.300.0030.00916.26
7.0.290.0010.01216.12
7.0.280.0040.00816.03
7.0.270.0030.01016.12
7.0.260.0060.00616.21
7.0.250.0080.00516.08
7.0.240.0050.00916.35
7.0.230.0060.00916.12
7.0.220.0100.00516.31
7.0.210.0040.00416.17
7.0.200.0060.00716.27
7.0.190.0040.00916.17
7.0.180.0030.00916.34
7.0.170.0070.00716.25
7.0.160.0050.00816.24
7.0.150.0030.01416.09
7.0.140.0070.00616.17
7.0.130.0030.00716.14
7.0.120.0070.00716.26
7.0.110.0050.00916.16
7.0.100.0040.02317.54
7.0.90.0040.03617.40
7.0.80.0110.02117.47
7.0.70.0150.02617.33
7.0.60.0090.03017.45
7.0.50.0100.02917.62
7.0.40.0080.02815.99
7.0.30.0070.02916.14
7.0.20.0090.03216.22
7.0.10.0060.03216.20
7.0.00.0080.03016.00
5.6.400.0090.00615.98
5.6.390.0040.00415.59
5.6.380.0050.01114.94
5.6.370.0030.00715.21
5.6.360.0080.00514.83
5.6.350.0100.00514.86
5.6.340.0110.00214.95
5.6.330.0030.01214.85
5.6.320.0050.00914.97
5.6.310.0050.00915.11
5.6.300.0050.00815.04
5.6.290.0090.00615.19
5.6.280.0010.03017.03
5.6.270.0060.00615.12
5.6.260.0060.00814.97
5.6.250.0070.02016.99
5.6.240.0080.03016.84
5.6.230.0080.03216.94
5.6.220.0040.03616.94
5.6.210.0060.02716.94
5.6.200.0080.02716.97
5.6.190.0100.02917.04
5.6.180.0070.03316.94
5.6.170.0120.02616.98
5.6.160.0050.03417.13
5.6.150.0040.02417.04
5.6.140.0040.02817.06
5.6.130.0030.03616.94
5.6.120.0060.03217.02
5.6.110.0090.03016.89
5.6.100.0090.03217.01
5.6.90.0050.03316.94
5.6.80.0110.02416.69
5.6.70.0100.02316.65
5.6.60.0070.02716.82
5.6.50.0060.02916.76
5.6.40.0040.02216.68
5.6.30.0100.02716.77
5.6.20.0100.02816.88
5.6.10.0100.02916.68
5.6.00.0100.03016.80
5.5.380.0070.02815.63
5.5.370.0080.03115.62
5.5.360.0060.03115.65
5.5.350.0070.02015.73
5.5.340.0050.02015.75
5.5.330.0080.01715.83
5.5.320.0020.02115.77
5.5.310.0070.03215.81
5.5.300.0090.03015.82
5.5.290.0080.02715.84
5.5.280.0020.03515.85
5.5.270.0090.02915.85
5.5.260.0060.02915.78
5.5.250.0070.03115.74
5.5.240.0090.02715.57
5.5.230.0060.01815.54
5.5.220.0040.03115.58
5.5.210.0090.02815.58
5.5.200.0100.02115.58
5.5.190.0030.03315.62
5.5.180.0070.02815.51
5.5.170.0050.00713.25
5.5.160.0070.02315.63
5.5.150.0050.02915.50
5.5.140.0080.02615.56
5.5.130.0050.02515.54
5.5.120.0060.02015.64
5.5.110.0080.01615.59
5.5.100.0040.03315.52
5.5.90.0050.02915.60
5.5.80.0090.02915.52
5.5.70.0070.03015.57
5.5.60.0070.01815.53
5.5.50.0080.03015.56
5.5.40.0080.02615.57
5.5.30.0110.02715.52
5.5.20.0030.03315.57
5.5.10.0090.02815.55
5.5.00.0030.02915.50

preferences:
40.53 ms | 400 KiB | 5 Q