3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private $a; public function __construct(string $a) { $this->a = $a; } public function doStuff() { var_dump(isset($this->a), isset($a)); echo '$this->a holds the value of : ' . $this->a . PHP_EOL; echo '$a holds the value of : ' . $a . PHP_EOL; } } $aObject = new A("helloWorld"); $aObject->doStuff();

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)
8.3.60.0110.00418.55
8.3.50.0110.00418.02
8.3.40.0100.01018.55
8.3.30.0040.01118.84
8.3.20.0080.00020.79
8.3.10.0050.00223.66
8.3.00.0050.00320.52
8.2.180.0160.00325.92
8.2.170.0080.00818.96
8.2.160.0100.00322.96
8.2.150.0080.00025.66
8.2.140.0030.00624.66
8.2.130.0030.00718.09
8.2.120.0060.00326.35
8.2.110.0030.00622.26
8.2.100.0100.00319.51
8.2.90.0030.00617.75
8.2.80.0030.00518.91
8.2.70.0040.00417.63
8.2.60.0090.00017.93
8.2.50.0050.00518.07
8.2.40.0000.00818.22
8.2.30.0040.00418.12
8.2.20.0000.00718.11
8.2.10.0000.00719.12
8.2.00.0050.00218.18
8.1.280.0030.01525.92
8.1.270.0050.00224.66
8.1.260.0040.00426.35
8.1.250.0110.00428.09
8.1.240.0030.00720.28
8.1.230.0080.00417.77
8.1.220.0040.00417.79
8.1.210.0050.00318.77
8.1.200.0030.00617.35
8.1.190.0000.00817.35
8.1.180.0050.00318.10
8.1.170.0040.00418.59
8.1.160.0070.00018.81
8.1.150.0000.00718.89
8.1.140.0040.00418.99
8.1.130.0030.00720.18
8.1.120.0030.00517.52
8.1.110.0000.00717.35
8.1.100.0030.00617.48
8.1.90.0000.00717.38
8.1.80.0000.00717.48
8.1.70.0040.00417.37
8.1.60.0040.00417.59
8.1.50.0050.00317.53
8.1.40.0040.00417.37
8.1.30.0030.00517.63
8.1.20.0050.00317.69
8.1.10.0050.00317.62
8.1.00.0000.00817.50
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0030.00318.35
8.0.270.0040.00416.94
8.0.260.0030.00318.44
8.0.250.0030.00316.91
8.0.240.0070.00016.94
8.0.230.0070.00017.05
8.0.220.0000.00716.87
8.0.210.0070.00016.89
8.0.200.0050.00317.03
8.0.190.0030.00616.98
8.0.180.0050.00316.81
8.0.170.0030.00516.88
8.0.160.0040.00416.98
8.0.150.0000.00716.89
8.0.140.0000.00816.95
8.0.130.0000.00613.39
8.0.120.0040.00416.89
8.0.110.0040.00417.02
8.0.100.0000.00716.82
8.0.90.0000.00717.00
8.0.80.0060.00916.90
8.0.70.0040.00416.99
8.0.60.0080.00016.88
8.0.50.0050.00216.95
8.0.30.0140.00417.10
8.0.20.0070.01217.01
8.0.10.0040.00416.89
8.0.00.0090.00916.70
7.4.330.0050.00016.81
7.4.320.0030.00316.38
7.4.300.0040.00416.53
7.4.290.0030.00316.50
7.4.280.0060.00316.41
7.4.270.0030.00616.55
7.4.260.0070.00016.50
7.4.250.0080.00016.42
7.4.240.0000.00716.59
7.4.230.0000.00716.68
7.4.220.0080.00016.66
7.4.210.0060.01116.51
7.4.200.0040.00416.41
7.4.160.0090.00916.52
7.4.140.0090.01317.86
7.4.130.0060.01116.64
7.4.120.0110.00716.45
7.4.110.0060.01216.57
7.4.100.0090.01216.65
7.4.90.0070.01016.47
7.4.80.0090.01019.39
7.4.70.0130.00316.57
7.4.60.0060.00916.44
7.4.50.0120.00416.53
7.4.40.0140.00316.46
7.4.00.0000.01715.05
7.3.330.0050.00013.19
7.3.320.0000.00513.18
7.3.310.0040.00416.27
7.3.300.0030.00316.38
7.3.290.0000.00716.36
7.3.280.0070.01216.30
7.3.260.0080.01016.45
7.3.240.0070.01016.44
7.3.230.0060.01116.53
7.3.210.0070.01016.28
7.3.200.0100.00716.45
7.3.190.0080.00816.27
7.3.180.0090.00916.33
7.3.170.0090.01216.57
7.3.160.0060.01016.40
7.3.120.0030.01215.00
7.3.110.0100.00714.91
7.3.100.0070.00714.83
7.3.90.0000.01715.04
7.3.80.0000.01014.81
7.3.70.0070.00314.89
7.3.60.0070.00314.84
7.3.50.0000.01114.61
7.3.40.0080.00314.55
7.3.30.0050.01014.60
7.3.20.0110.00915.63
7.3.10.5400.00615.66
7.3.00.3520.01015.75
7.2.330.0090.00916.52
7.2.320.0060.01116.84
7.2.310.0080.00816.78
7.2.300.0160.00716.74
7.2.290.0170.00016.81
7.2.240.0100.00715.16
7.2.230.0070.01115.20
7.2.220.0040.00815.26
7.2.210.0130.00614.67
7.2.200.0030.01215.03
7.2.190.0040.01215.09
7.2.180.0090.00915.02
7.2.170.0030.01015.07
7.2.160.0030.01514.87
7.2.150.0110.01315.79
7.2.140.5640.00815.77
7.2.130.4510.01215.91
7.2.120.4890.00515.81
7.2.110.4300.00716.04
7.2.100.3780.00716.06
7.2.90.2700.01615.94
7.2.80.0600.00816.04
7.2.70.3220.01515.98
7.2.60.2290.00815.99
7.2.50.1050.00915.94
7.2.40.1740.00515.98
7.2.30.0810.00916.12
7.2.20.3790.00715.88
7.2.10.3420.01015.92
7.2.00.4460.00915.83
7.1.330.0030.01315.84
7.1.320.0030.01315.69
7.1.310.0030.01015.75
7.1.300.0000.01715.76
7.1.290.0100.00315.80
7.1.280.0040.01215.73
7.1.270.0120.00514.75
7.1.260.3460.01014.65
7.1.250.5480.00514.73

preferences:
60.76 ms | 401 KiB | 5 Q