3v4l.org

run code in 300+ PHP versions simultaneously
<?php class weird { var $myvar; function __construct() { $this->myvar = "A"; $this->$myvar = "B"; $this->${'myvar'} = "C"; $this->${'$myvar'} = "D"; echo 'this->myvar: '.$this->myvar."\n"; echo 'this->$myvar: '.$this->$myvar."\n"; echo 'this->${\'myvar\'}: '.$this->${'myvar'}."\n"; echo 'this->${\'$myvar\'}: '.$this->${'$myvar'}."\n"; echo 'this->$$$$$$$myvar: '.$this->$$$$$$$myvar."\n"; echo 'this->$$$$$$${\'$$$myvar\'}: ' . $this->$$$$$$${'$$$myvar'}."\n"; } } $obj = new weird; ?>

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)
8.3.60.0070.01116.63
8.3.50.0100.00921.05
8.3.40.0070.01118.66
8.3.30.0070.00718.87
8.3.20.0080.00020.21
8.3.10.0060.00323.66
8.3.00.0040.00423.51
8.2.180.0150.00316.75
8.2.170.0120.00322.96
8.2.160.0100.00620.58
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0060.00319.82
8.2.120.0080.00026.35
8.2.110.0060.00322.17
8.2.100.0000.01218.04
8.2.90.0080.00019.03
8.2.80.0040.00417.97
8.2.70.0030.00617.50
8.2.60.0090.00018.05
8.2.50.0000.00818.07
8.2.40.0040.00422.23
8.2.30.0030.00619.36
8.2.20.0080.00017.68
8.2.10.0030.00518.01
8.2.00.0060.00317.96
8.1.280.0130.00725.92
8.1.270.0070.01123.96
8.1.260.0030.00628.09
8.1.250.0000.00828.09
8.1.240.0100.00022.55
8.1.230.0000.01119.12
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0060.00317.47
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0080.00018.57
8.1.160.0060.00320.79
8.1.150.0040.00418.99
8.1.140.0060.00319.61
8.1.130.0030.00317.70
8.1.120.0000.00717.53
8.1.110.0040.00417.46
8.1.100.0040.00417.52
8.1.90.0030.00517.54
8.1.80.0040.00417.52
8.1.70.0000.00817.34
8.1.60.0060.00317.65
8.1.50.0030.00617.55
8.1.40.0000.00817.50
8.1.30.0080.00017.64
8.1.20.0060.00317.64
8.1.10.0050.00317.61
8.1.00.0040.00417.57
8.0.300.0060.00318.77
8.0.290.0000.00816.75
8.0.280.0070.00018.52
8.0.270.0080.00017.29
8.0.260.0070.00017.15
8.0.250.0030.00317.06
8.0.240.0000.00816.98
8.0.230.0030.00316.99
8.0.220.0050.00316.94
8.0.210.0000.00816.97
8.0.200.0000.00616.96
8.0.190.0030.00516.93
8.0.180.0000.00816.89
8.0.170.0030.00616.98
8.0.160.0040.00417.04
8.0.150.0040.00316.92
8.0.140.0070.00016.82
8.0.130.0060.00013.37
8.0.120.0000.00916.90
8.0.110.0050.00316.90
8.0.100.0070.00016.93
8.0.90.0000.00717.04
8.0.80.0060.01116.93
8.0.70.0080.00017.05
8.0.60.0040.00416.87
8.0.50.0040.00416.86
8.0.30.0130.00517.15
8.0.20.0160.00617.43
8.0.10.0030.00517.04
8.0.00.0100.00816.82
7.4.330.0020.00216.66
7.4.320.0060.00016.62
7.4.300.0000.00816.55
7.4.290.0000.00716.55
7.4.280.0050.00416.65
7.4.270.0030.00316.50
7.4.260.0000.00716.41
7.4.250.0050.00216.57
7.4.240.0020.00516.48
7.4.230.0030.00516.74
7.4.220.0000.02016.71
7.4.210.0120.00316.40
7.4.200.0000.00716.68
7.4.160.0080.00816.60
7.4.150.0140.00417.40
7.4.140.0150.00417.86
7.4.130.0100.01016.48
7.4.120.0090.00916.70
7.4.110.0070.01016.39
7.4.100.0130.01016.63
7.4.90.0060.01216.59
7.4.80.0120.00819.39
7.4.70.0110.00616.68
7.4.60.0030.01316.69
7.4.50.0150.00016.50
7.4.40.0100.01316.49
7.4.30.0120.01216.43
7.4.10.0060.01014.82
7.4.00.0050.01015.15
7.3.330.0000.00613.41
7.3.320.0000.00713.47
7.3.310.0030.00316.54
7.3.300.0030.00316.36
7.3.290.0080.00616.45
7.3.280.0060.01016.44
7.3.270.0070.01017.40
7.3.260.0080.01016.43
7.3.250.0080.01116.48
7.3.240.0110.01016.53
7.3.230.0150.00616.57
7.3.210.0140.00916.47
7.3.200.0100.00719.39
7.3.190.0100.01016.44
7.3.180.0080.00816.55
7.3.170.0090.00916.57
7.3.160.0150.00616.46
7.3.130.0000.01214.95
7.3.120.0160.00315.14
7.3.110.0040.00814.98
7.3.100.0030.01015.04
7.3.90.0130.00315.10
7.3.80.0040.00415.04
7.3.70.0140.00015.05
7.3.60.0000.01014.83
7.3.50.0030.00914.91
7.3.40.0080.00014.70
7.3.30.0060.00914.62
7.3.20.0040.00416.75
7.3.10.0060.01016.66
7.3.00.0130.00716.67
7.2.330.0090.01116.39
7.2.320.0120.00816.41
7.2.310.0110.00716.61
7.2.300.0090.00916.74
7.2.290.0040.01216.85
7.2.260.0070.01315.09
7.2.250.0070.01315.14
7.2.240.0000.01415.20
7.2.230.0060.00615.31
7.2.220.0030.00615.08
7.2.210.0000.01115.28
7.2.200.0110.00315.16
7.2.190.0060.00614.98
7.2.180.0050.00315.01
7.2.170.0040.01115.10
7.2.160.0030.01214.93
7.2.150.0030.01416.91
7.2.140.0110.00316.89
7.2.130.0100.00716.58
7.2.120.0090.00816.38
7.2.110.0160.00416.84
7.2.100.0100.01016.98
7.2.90.0090.00616.48
7.2.80.0090.01116.91
7.2.70.0080.01016.81
7.2.60.0120.00816.75
7.2.50.0120.00517.00
7.2.40.0070.00916.35
7.2.30.0100.00616.76
7.2.20.0090.00916.79
7.2.10.0080.00516.82
7.2.00.0070.00617.72
7.1.330.0030.01015.71
7.1.320.0030.00915.90
7.1.310.0030.00715.93
7.1.300.0040.00815.47
7.1.290.0040.00415.71
7.1.280.0040.00815.76
7.1.270.0030.00915.68
7.1.260.0060.00615.91
7.1.250.0110.00715.65
7.1.240.0070.00715.61
7.1.230.0070.00715.96
7.1.220.0120.00315.55
7.1.210.0100.00315.85
7.1.200.0020.01115.85
7.1.190.0090.00615.71
7.1.180.0060.00915.63
7.1.170.0090.00615.63
7.1.160.0060.00615.57
7.1.150.0090.00015.98
7.1.140.0040.00715.69
7.1.130.0060.00615.99
7.1.120.0030.01315.82
7.1.110.0060.01015.60
7.1.100.0100.00217.11
7.1.90.0050.00815.76
7.1.80.0100.00615.77
7.1.70.0040.00716.60
7.1.60.0050.01317.60
7.1.50.0070.01016.49
7.1.40.0090.00315.54
7.1.30.0100.00315.87
7.1.20.0000.01215.82
7.1.10.0060.00615.87
7.1.00.0020.04419.13
7.0.330.0060.00915.23
7.0.320.0060.00315.31
7.0.310.0030.00715.12
7.0.300.0000.01315.18
7.0.290.0090.00315.32
7.0.280.0070.01115.09
7.0.270.0040.00415.35
7.0.260.0080.01015.30
7.0.250.0030.01315.16
7.0.240.0000.01715.53
7.0.230.0030.00715.25
7.0.220.0030.00615.30
7.0.210.0080.00415.35
7.0.200.0070.00315.93
7.0.190.0030.01015.21
7.0.180.0070.00715.27
7.0.170.0060.00615.07
7.0.160.0130.00015.59
7.0.150.0030.01315.42
7.0.140.0040.00715.29
7.0.130.0030.01015.51
7.0.120.0090.00615.23
7.0.110.0070.00715.49
7.0.100.0040.01115.14
7.0.90.0040.00715.54
7.0.80.0060.00615.34
7.0.70.0040.00415.33
7.0.60.0100.04518.51
7.0.50.0060.02816.67
7.0.40.0070.02516.87
7.0.30.0150.02416.85
7.0.20.0220.03516.77
7.0.10.0080.04116.76
7.0.00.0110.03116.78
5.6.400.0040.01114.13
5.6.390.0070.00714.36
5.6.380.0070.00414.10
5.6.370.0060.00614.28
5.6.360.0070.00714.40
5.6.350.0040.00814.21
5.6.340.0110.00714.34
5.6.330.0070.00714.31
5.6.320.0060.00914.63
5.6.310.0050.00514.61
5.6.300.0080.00814.13
5.6.290.0000.01014.37
5.6.280.0030.01817.69
5.6.270.0000.01714.23
5.6.260.0140.00014.17
5.6.250.0080.00814.48
5.6.240.0030.00714.09
5.6.230.0030.01014.60
5.6.220.0060.00914.23
5.6.210.0100.02717.41
5.6.200.0050.02316.22
5.6.190.0030.02717.33
5.6.180.0170.02317.33
5.6.170.0150.02217.28
5.6.160.0060.02317.36
5.6.150.0070.04216.21
5.6.140.0020.03716.36
5.6.130.0100.04416.23
5.6.120.0030.02917.72
5.6.110.0070.04517.57
5.6.100.0050.04217.64
5.6.90.0070.02417.53
5.6.80.0050.02317.27
5.6.70.0070.00714.07
5.6.60.0090.00614.11
5.6.50.0040.00414.21
5.6.40.0120.00614.29
5.6.30.0130.00314.32
5.6.20.0110.00014.24
5.6.10.0030.00614.34
5.6.00.0060.00614.21
5.5.380.0000.01014.46
5.5.370.0030.00914.44
5.5.360.0000.01214.01
5.5.350.0050.03917.21
5.5.340.0050.03316.23
5.5.330.0120.04017.06
5.5.320.0290.03417.43
5.5.310.0260.03117.27
5.5.300.0050.04316.11
5.5.290.0030.04616.11
5.5.280.0060.03117.47
5.5.270.0050.02217.44
5.5.260.0050.02717.37
5.5.250.0100.03617.36
5.5.240.0080.04417.16
5.5.230.0060.00614.14
5.5.220.0030.01314.05
5.5.210.0130.00314.33
5.5.200.0060.00914.20
5.5.190.0030.01214.25
5.5.180.0040.00814.19
5.5.170.0040.01114.16
5.5.160.0060.01014.23
5.5.150.0060.00914.05
5.5.140.0060.01014.31
5.5.130.0000.01014.04
5.5.120.0000.01614.11
5.5.110.0100.00313.93
5.5.100.0040.00814.32
5.5.90.0040.01214.06
5.5.80.0030.00914.10
5.5.70.0060.00313.84
5.5.60.0140.00014.21
5.5.50.0000.00914.29
5.5.40.0100.00314.41
5.5.30.0040.01114.01
5.5.20.0030.01413.89
5.5.10.0040.01114.11
5.5.00.0070.01013.81

preferences:
50.47 ms | 401 KiB | 5 Q