3v4l.org

run code in 300+ PHP versions simultaneously
<?php class test{ public $p1; public function __construct() { $this->p1 = ""; } } $a = new test(); var_dump(isset($a->p1));

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)
8.3.60.0090.00616.75
8.3.50.0040.01116.20
8.3.40.0250.00318.43
8.3.30.0080.00818.84
8.3.20.0030.00518.73
8.3.10.0110.00321.86
8.3.00.0050.00321.91
8.2.180.0150.00318.29
8.2.170.0040.01122.96
8.2.160.0030.01022.08
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0050.00319.82
8.2.120.0050.00326.35
8.2.110.0060.00319.14
8.2.100.0040.01117.43
8.2.90.0060.00317.62
8.2.80.0060.00317.97
8.2.70.0060.00317.80
8.2.60.0040.00418.09
8.2.50.0000.00818.10
8.2.40.0000.00720.40
8.2.30.0040.00419.19
8.2.20.0080.00017.87
8.2.10.0050.00218.00
8.2.00.0040.00417.62
8.1.280.0160.00625.92
8.1.270.0070.00722.18
8.1.260.0040.00428.09
8.1.250.0040.00428.09
8.1.240.0130.00723.77
8.1.230.0070.00422.25
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0060.00317.38
8.1.190.0050.00317.25
8.1.180.0000.00818.10
8.1.170.0000.00820.45
8.1.160.0040.00422.14
8.1.150.0060.00318.75
8.1.140.0020.00519.48
8.1.130.0050.00317.56
8.1.120.0030.00317.30
8.1.110.0000.00717.38
8.1.100.0040.00417.40
8.1.90.0030.00617.42
8.1.80.0030.00517.39
8.1.70.0000.00817.30
8.1.60.0000.00717.63
8.1.50.0080.00017.53
8.1.40.0020.00517.52
8.1.30.0040.00417.57
8.1.20.0000.00717.45
8.1.10.0040.00417.64
8.1.00.0030.00517.49
8.0.300.0020.00518.77
8.0.290.0080.00016.63
8.0.280.0040.00418.33
8.0.270.0070.00017.10
8.0.260.0030.00317.26
8.0.250.0000.00716.89
8.0.240.0070.00016.86
8.0.230.0030.00316.79
8.0.220.0000.00716.83
8.0.210.0000.00916.73
8.0.200.0030.00316.92
8.0.190.0000.00716.75
8.0.180.0000.00916.75
8.0.170.0040.00416.85
8.0.160.0060.00316.73
8.0.150.0040.00416.81
8.0.140.0090.00016.82
8.0.130.0030.00313.29
8.0.120.0000.00816.73
8.0.110.0040.00416.63
8.0.100.0040.00416.61
8.0.90.0040.00416.83
8.0.80.0110.00416.84
8.0.70.0070.00016.74
8.0.60.0000.00716.78
8.0.50.0070.00016.95
8.0.30.0120.00616.98
8.0.20.0090.01017.40
8.0.10.0000.00716.85
8.0.00.0060.01216.74
7.4.330.0050.00015.55
7.4.320.0060.00316.45
7.4.300.0070.00016.50
7.4.290.0030.00316.50
7.4.280.0040.00416.60
7.4.270.0030.00316.44
7.4.260.0000.00816.48
7.4.250.0000.00816.57
7.4.240.0040.00416.56
7.4.230.0040.00416.58
7.4.220.0120.00816.51
7.4.210.0090.00916.40
7.4.200.0040.00416.51
7.4.160.0080.01016.51
7.4.150.0030.01417.40
7.4.140.0060.01217.86
7.4.130.0100.00716.55
7.4.120.0100.00916.38
7.4.110.0090.00916.50
7.4.100.0060.01016.42
7.4.90.0070.01016.42
7.4.80.0070.01419.39
7.4.70.0120.00316.50
7.4.60.0070.01016.47
7.4.50.0070.01016.24
7.4.40.0180.00516.43
7.4.30.0040.01216.31
7.4.00.0070.00714.88
7.3.330.0030.00313.09
7.3.320.0000.00513.25
7.3.310.0000.00616.36
7.3.300.0060.00016.18
7.3.290.0080.00616.33
7.3.280.0080.01116.32
7.3.270.0120.00617.40
7.3.260.0050.01216.40
7.3.250.0110.00816.37
7.3.240.0070.00916.40
7.3.230.0040.01416.63
7.3.210.0120.00416.53
7.3.200.0070.01416.60
7.3.190.0030.01916.29
7.3.180.0060.01016.29
7.3.170.0120.00816.54
7.3.160.0090.00916.45
7.2.330.0090.00916.68
7.2.320.0130.01016.54
7.2.310.0080.00916.57
7.2.300.0140.00716.60
7.2.290.0030.01316.46
7.1.200.0040.00815.74
7.1.70.0090.00617.06
7.1.60.0030.00816.86
7.1.00.0100.07022.33
7.0.200.0340.00614.57
7.0.120.0130.05722.10
7.0.110.0070.06722.01
7.0.100.0170.06722.04
7.0.90.0100.08022.03
7.0.80.0170.06322.03
7.0.70.0100.07322.14
7.0.60.0030.07322.11
7.0.50.0170.07722.13
7.0.40.0130.06722.11
7.0.30.0070.07022.00
7.0.20.0100.07022.10
7.0.10.0100.06322.14
7.0.00.0130.06022.02
5.6.270.0130.05720.88
5.6.260.0070.06321.08
5.6.250.0000.06320.89
5.6.240.0070.08321.01
5.6.230.0170.07321.02
5.6.220.0170.07320.95
5.6.210.0100.05320.89
5.6.200.0100.06721.00
5.6.190.0130.08320.83
5.6.180.0130.07321.09
5.6.170.0070.07021.00
5.6.160.0170.06020.92
5.6.150.0130.06720.84
5.6.140.0170.07720.94
5.6.130.0170.06721.03
5.6.120.0300.05720.94
5.6.110.0330.06320.88
5.6.100.0000.08320.83
5.6.90.0100.07720.80
5.6.80.0200.06720.39
5.6.70.0100.07320.38
5.6.60.0130.07020.20
5.6.50.0230.07020.40
5.6.40.0170.07320.37
5.6.30.0070.07320.11
5.6.20.0130.06720.29
5.6.10.0070.06720.34
5.6.00.0100.06720.43

preferences:
55.26 ms | 401 KiB | 5 Q