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; } }

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)
8.3.60.0110.00418.03
8.3.50.0120.00318.10
8.3.40.0110.00718.31
8.3.30.0090.00618.59
8.3.20.0040.00420.78
8.3.10.0070.00023.66
8.3.00.0000.00820.39
8.2.180.0070.01117.93
8.2.170.0040.01122.96
8.2.160.0030.01020.68
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0070.00026.16
8.2.120.0040.00419.12
8.2.110.0030.00622.11
8.2.100.0030.01317.59
8.2.90.0060.00317.91
8.2.80.0000.00818.73
8.2.70.0080.00017.80
8.2.60.0040.00417.91
8.2.50.0000.00818.10
8.2.40.0040.00419.21
8.2.30.0000.00819.03
8.2.20.0030.00517.92
8.2.10.0000.00719.14
8.2.00.0070.00018.18
8.1.280.0100.00725.92
8.1.270.0050.00320.43
8.1.260.0000.00826.35
8.1.250.0050.00228.09
8.1.240.0030.00623.97
8.1.230.0040.00722.82
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0060.00317.10
8.1.190.0000.00817.00
8.1.180.0040.00418.10
8.1.170.0090.00018.45
8.1.160.0040.00418.75
8.1.150.0000.00718.77
8.1.140.0040.00418.89
8.1.130.0080.00320.15
8.1.120.0000.00717.38
8.1.110.0000.00717.29
8.1.100.0080.00017.30
8.1.90.0070.00017.18
8.1.80.0000.00717.30
8.1.70.0030.00617.40
8.1.60.0060.00317.48
8.1.50.0000.00717.31
8.1.40.0000.00917.38
8.1.30.0040.00417.57
8.1.20.0030.00517.39
8.1.10.0000.00817.29
8.1.00.0040.00417.29
8.0.300.0070.00020.21
8.0.290.0070.00016.58
8.0.280.0030.00318.38
8.0.270.0000.00717.15
8.0.260.0030.00318.28
8.0.250.0060.00016.75
8.0.240.0060.00016.77
8.0.230.0040.00416.87
8.0.220.0070.00016.74
8.0.210.0030.00316.85
8.0.200.0000.00816.87
8.0.190.0000.00716.81
8.0.180.0020.00516.79
8.0.170.0000.00916.79
8.0.160.0000.00816.70
8.0.150.0000.00716.69
8.0.140.0040.00416.75
8.0.130.0030.00313.24
8.0.120.0030.00516.70
8.0.110.0050.00316.77
8.0.100.0000.00716.63
8.0.90.0070.00016.84
8.0.80.0070.00716.82
8.0.70.0050.00316.77
8.0.60.0020.00516.82
8.0.50.0000.00816.73
8.0.30.0050.01417.06
8.0.20.0080.01116.82
8.0.10.0030.00317.01
8.0.00.0070.01116.78
7.4.330.0050.00016.79
7.4.320.0030.00316.43
7.4.300.0000.00616.36
7.4.290.0030.00316.46
7.4.280.0000.01016.52
7.4.270.0070.00016.46
7.4.260.0040.00416.43
7.4.250.0000.00716.45
7.4.240.0070.00016.38
7.4.230.0070.00016.18
7.4.220.0040.00416.29
7.4.210.0080.00716.42
7.4.200.0000.00716.48
7.4.160.0080.00816.31
7.4.140.0100.01517.86
7.4.130.0110.00716.33
7.4.120.0080.00816.43
7.4.110.0140.00316.45
7.4.100.0070.01016.29
7.4.90.0050.01116.39
7.4.80.0120.00919.39
7.4.70.0120.00616.25
7.4.60.0060.00916.43
7.4.50.0000.01616.08
7.4.40.0000.01816.31
7.4.00.0090.00614.49
7.3.330.0000.00513.04
7.3.320.0000.00613.16
7.3.310.0030.00316.20
7.3.300.0030.00316.13
7.3.290.0030.00316.17
7.3.280.0100.00516.15
7.3.260.0130.00616.27
7.3.240.0100.00916.19
7.3.230.0100.00716.13
7.3.210.0080.01516.40
7.3.200.0060.01016.17
7.3.190.0130.00316.41
7.3.180.0090.00916.29
7.3.170.0130.00316.40
7.3.160.0080.00816.34
7.3.120.0100.00714.64
7.3.110.0140.00314.86
7.3.100.0040.00714.73
7.3.90.0040.00814.51
7.3.80.0060.00314.57
7.3.70.0070.01014.65
7.3.60.0000.00814.76
7.3.50.0110.00614.54
7.3.40.0070.00314.65
7.3.30.0140.00714.55
7.3.20.2200.01015.46
7.3.10.2290.00515.36
7.3.00.2850.00815.61
7.2.330.0100.00716.33
7.2.320.0070.01016.50
7.2.310.0100.00616.50
7.2.300.0080.01016.50
7.2.290.0070.01416.42
7.2.250.0070.01114.36
7.2.240.0030.01714.71
7.2.230.0000.01414.66
7.2.220.0110.00314.83
7.2.210.0060.00914.82
7.2.200.0030.01214.80
7.2.190.0070.00314.70
7.2.180.0110.00314.38
7.2.170.0120.00614.70
7.2.160.0140.01014.51
7.2.150.7310.00714.62
7.2.140.5060.01014.65
7.2.130.6190.01314.82
7.2.120.6460.00714.84
7.2.110.5810.01014.89
7.2.100.4960.01714.81
7.2.90.5680.01015.09
7.2.80.7400.00314.68
7.2.70.5240.00714.56
7.2.60.1970.00714.93
7.2.50.6240.00714.54
7.2.40.9210.00714.57
7.2.30.2860.01314.86
7.2.20.9170.00714.72
7.2.10.6770.01314.33
7.2.00.3890.01014.75
7.1.330.0040.01115.61
7.1.320.0060.01315.46
7.1.310.0070.00715.41
7.1.300.0080.00515.61
7.1.290.0000.01615.70
7.1.280.0060.01215.54
7.1.270.2560.00914.60
7.1.260.2250.00314.65
7.1.250.7310.00713.59

preferences:
63 ms | 400 KiB | 5 Q