3v4l.org

run code in 300+ PHP versions simultaneously
<?php class test { private $data = array(); public function __get($key) { echo "get $key\n"; return $$key; } public function __set($key, $value) { echo "set $key = $value\n"; $this->$key = $value; } public function __isset($key) { echo sprintf("isset $key ( returns %b )", isset($this->$key)); return isset($this->$key); } } $test = new test(); var_dump(property_exists($test, 'x')); var_dump(isset($test->x)); $test->x = 42; var_dump(property_exists($test, 'x')); var_dump(isset($test->x));

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)
8.3.60.0180.00018.68
8.3.50.0100.00922.05
8.3.40.0070.00718.96
8.3.30.0040.01118.75
8.3.20.0080.00018.85
8.3.10.0080.00021.14
8.3.00.0040.00423.61
8.2.180.0090.00916.75
8.2.170.0070.00722.96
8.2.160.0040.01120.35
8.2.150.0000.00824.18
8.2.140.0070.00024.66
8.2.130.0070.00026.16
8.2.120.0080.00019.54
8.2.110.0050.00520.43
8.2.100.0040.00817.91
8.2.90.0030.00619.13
8.2.80.0000.00817.97
8.2.70.0040.00417.63
8.2.60.0030.00517.92
8.2.50.0080.00018.07
8.2.40.0000.00818.22
8.2.30.0040.00419.46
8.2.20.0030.00517.79
8.2.10.0040.00417.63
8.2.00.0050.00217.79
8.1.280.0030.01725.92
8.1.270.0040.00423.99
8.1.260.0060.00326.35
8.1.250.0070.00328.09
8.1.240.0060.00322.46
8.1.230.0040.00821.05
8.1.220.0000.00818.77
8.1.210.0000.00818.77
8.1.200.0000.01017.48
8.1.190.0070.00017.66
8.1.180.0030.00518.10
8.1.170.0030.00518.65
8.1.160.0000.00718.83
8.1.150.0000.00718.64
8.1.140.0070.00017.50
8.1.130.0000.00717.82
8.1.120.0040.00417.54
8.1.110.0080.00317.42
8.1.100.0000.00717.45
8.1.90.0000.00717.53
8.1.80.0040.00417.41
8.1.70.0000.00717.47
8.1.60.0070.00017.47
8.1.50.0000.00717.49
8.1.40.0020.00517.53
8.1.30.0000.00817.64
8.1.20.0040.00417.63
8.1.10.0000.00817.43
8.1.00.0000.00717.46
8.0.300.0070.00020.02
8.0.290.0030.00617.16
8.0.280.0040.00418.33
8.0.270.0000.00717.13
8.0.260.0050.00316.79
8.0.250.0040.00416.98
8.0.240.0030.00616.92
8.0.230.0000.00716.82
8.0.220.0050.00216.87
8.0.210.0000.00716.89
8.0.200.0030.00316.96
8.0.190.0040.00416.85
8.0.180.0000.00816.93
8.0.170.0060.00316.88
8.0.160.0040.00416.96
8.0.150.0070.00016.74
8.0.140.0070.00316.75
8.0.130.0030.00313.29
8.0.120.0040.00416.88
8.0.110.0020.00516.77
8.0.100.0000.00716.90
8.0.90.0050.00216.77
8.0.80.0120.00316.95
8.0.70.0050.00216.84
8.0.60.0070.00316.88
8.0.50.0000.00816.80
8.0.30.0120.00817.34
8.0.20.0100.00917.40
8.0.10.0000.00716.88
8.0.00.0080.01016.73
7.4.330.0030.00314.63
7.4.320.0000.01016.34
7.4.300.0030.00316.61
7.4.290.0040.00416.60
7.4.280.0000.00716.49
7.4.270.0000.00716.48
7.4.260.0060.00013.23
7.4.250.0000.00716.46
7.4.240.0070.00016.50
7.4.230.0080.00016.34
7.4.220.0150.01016.66
7.4.210.0080.00816.55
7.4.200.0050.00216.30
7.4.190.0040.00416.70
7.4.160.0160.00616.52
7.4.150.0070.01017.40
7.4.140.0090.00817.86
7.4.130.0090.00916.52
7.4.120.0090.00916.49
7.4.110.0030.01316.40
7.4.100.0070.01116.59
7.4.90.0120.01216.51
7.4.80.0120.00319.39
7.4.70.0100.00716.52
7.4.60.0030.01416.43
7.4.50.0030.00616.62
7.4.40.0090.00322.52
7.4.30.0030.01316.33
7.4.00.0030.01214.79
7.3.330.0020.00213.23
7.3.320.0000.00513.44
7.3.310.0030.00316.45
7.3.300.0000.00716.37
7.3.290.0000.01416.36
7.3.280.0060.01216.33
7.3.270.0090.00817.40
7.3.260.0090.00818.24
7.3.250.0080.01016.34
7.3.240.0110.00616.41
7.3.230.0110.00616.50
7.3.210.0110.00716.59
7.3.200.0090.01419.39
7.3.190.0130.00316.44
7.3.180.0090.00616.46
7.3.170.0130.00316.45
7.3.160.0030.01316.28
7.3.120.0100.00614.88
7.2.330.0140.00316.47
7.2.320.0170.00016.39
7.2.310.0060.01216.50
7.2.300.0130.00316.45
7.2.290.0110.00716.73
7.2.00.0100.01319.49
7.1.200.0090.00615.79
7.1.100.0070.00718.22
7.1.70.0070.00317.13
7.1.60.0120.01219.40
7.1.50.0030.02316.80
7.1.00.0000.03722.29
7.0.200.0000.00916.79
7.0.140.0000.07721.95
7.0.70.0100.08020.04
7.0.60.0030.08020.01
7.0.50.0100.08320.37
7.0.40.0170.07320.14
7.0.30.0070.08020.11
7.0.20.0070.08320.07
7.0.10.0070.04320.08
7.0.00.0100.06720.07
5.6.280.0070.07021.03
5.6.220.0130.07320.67
5.6.210.0100.04020.65
5.6.200.0070.06721.03
5.6.190.0000.09321.07
5.6.180.0070.08021.08
5.6.170.0030.06021.04
5.6.160.0030.06721.09
5.6.150.0100.07721.03
5.6.140.0130.08021.11
5.6.130.0230.07721.09
5.6.120.0100.04021.14
5.6.110.0070.04021.04
5.6.100.0070.04020.93
5.6.90.0130.03321.06
5.6.80.0030.04020.41
5.6.70.0100.07320.47
5.6.60.0100.07020.43
5.6.50.0030.04320.45
5.6.40.0070.03720.47
5.6.30.0030.04320.40
5.6.20.0130.07320.47
5.6.10.0030.04320.39
5.6.00.0030.04320.41
5.5.360.0100.06720.34
5.5.350.0100.08720.38
5.5.340.0030.09020.87
5.5.330.0070.08020.76
5.5.320.0100.08320.91
5.5.310.0030.04320.79
5.5.300.0170.07320.92
5.5.290.0030.04720.87
5.5.280.0130.03320.89
5.5.270.0000.04720.83
5.5.260.0070.05720.85
5.5.250.0070.04020.46
5.5.240.0070.08320.21
5.5.230.0030.08320.01
5.5.220.0100.05320.30
5.5.210.0000.03720.15
5.5.200.0030.04720.29
5.5.190.0030.04020.27
5.5.180.0000.03720.27
5.5.160.0030.06320.00
5.5.150.0100.03320.24
5.5.140.0000.04020.28
5.5.130.0100.02720.21
5.5.120.0070.03720.27
5.5.110.0100.03320.21
5.5.100.0030.04720.02
5.5.90.0000.04020.01
5.5.80.0030.04020.05
5.5.70.0100.04319.98
5.5.60.0030.03320.12
5.5.50.0000.04320.15
5.5.40.0030.03719.93
5.5.30.0030.03720.05
5.5.20.0030.03720.03
5.5.10.0030.04320.04
5.5.00.0070.03720.05
5.4.450.0100.03719.42
5.4.440.0070.05719.38
5.4.430.0030.06019.26
5.4.420.0070.03719.55
5.4.410.0030.04319.09
5.4.400.0130.03319.25
5.4.390.0100.07019.16
5.4.380.0100.04019.00
5.4.370.0070.04318.95
5.4.360.0070.03319.23
5.4.350.0030.06719.05
5.4.340.0030.04719.09
5.4.320.0000.05018.90
5.4.310.0000.04019.04
5.4.300.0030.05019.12
5.4.290.0100.05019.13
5.4.280.0030.04019.03
5.4.270.0000.04019.03
5.4.260.0000.04018.94
5.4.250.0030.03719.13
5.4.240.0100.03319.04
5.4.230.0100.03018.94
5.4.220.0000.04719.09
5.4.210.0100.04319.02
5.4.200.0000.04019.17
5.4.190.0000.04019.12
5.4.180.0070.03318.89
5.4.170.0030.03318.90
5.4.160.0030.04019.01
5.4.150.0000.04019.02
5.4.140.0070.03716.45
5.4.130.0100.02716.34
5.4.120.0030.04016.35
5.4.110.0030.03716.36
5.4.100.0030.03016.43
5.4.90.0070.04316.50
5.4.80.0030.06016.34
5.4.70.0130.03316.38
5.4.60.0070.03716.49
5.4.50.0030.07716.40
5.4.40.0070.07316.34
5.4.30.0130.04316.46
5.4.20.0100.07016.53
5.4.10.0100.07316.41
5.4.00.0100.06315.88
5.3.290.0000.04014.74
5.3.280.0000.05014.55
5.3.270.0070.03714.71
5.3.260.0030.04014.75
5.3.250.0030.03714.62
5.3.240.0000.03314.66
5.3.230.0070.03014.74
5.3.220.0130.02714.59
5.3.210.0000.04314.54
5.3.200.0030.03714.61
5.3.190.0000.04714.68
5.3.180.0030.08014.71
5.3.170.0130.06314.70
5.3.160.0070.04314.50
5.3.150.0070.07314.69
5.3.140.0100.07314.70
5.3.130.0070.05014.56
5.3.120.0000.08014.66
5.3.110.0130.07014.69
5.3.100.0070.08014.09
5.3.90.0130.06314.09
5.3.80.0100.05013.92
5.3.70.0070.07014.16
5.3.60.0070.07714.04
5.3.50.0100.07013.95
5.3.40.0100.05313.84
5.3.30.0130.06713.81
5.3.20.0030.07713.79
5.3.10.0070.07313.72
5.3.00.0030.07313.54
5.2.170.0070.06012.24
5.2.160.0000.05712.24
5.2.150.0030.07012.24
5.2.140.0070.04712.24
5.2.130.0070.04312.24
5.2.120.0100.06012.24
5.2.110.0030.06712.24
5.2.100.0100.05712.24
5.2.90.0030.06712.24
5.2.80.0070.05012.24
5.2.70.0030.03312.24
5.2.60.0030.06712.24
5.2.50.0000.07012.24
5.2.40.0030.06012.24
5.2.30.0130.05312.24
5.2.20.0030.06012.24
5.2.10.0170.03312.24
5.2.00.0170.03012.24
5.1.60.0070.04712.24
5.1.50.0070.04012.24
5.1.40.0070.02012.24
5.1.30.0030.04312.24
5.1.20.0070.05012.24
5.1.10.0030.03712.24
5.1.00.0030.04312.24
5.0.50.0000.04712.24
5.0.40.0000.04312.24
5.0.30.0100.05712.24
5.0.20.0000.03712.24
5.0.10.0030.03712.24
5.0.00.0030.05012.24
4.4.90.0000.01712.24
4.4.80.0030.03712.24
4.4.70.0070.02712.24
4.4.60.0030.02312.24
4.4.50.0000.03012.24
4.4.40.0000.02712.24
4.4.30.0000.02712.24
4.4.20.0000.02312.24
4.4.10.0030.03712.24
4.4.00.0030.02712.24
4.3.110.0030.03012.24
4.3.100.0030.03012.24
4.3.90.0030.03312.24
4.3.80.0070.04312.24
4.3.70.0000.02312.24
4.3.60.0000.03012.24
4.3.50.0030.02712.24
4.3.40.0030.03712.24
4.3.30.0000.03012.24
4.3.20.0030.02312.24
4.3.10.0000.02312.24
4.3.00.0000.02012.24

preferences:
33.53 ms | 401 KiB | 5 Q