3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(-1); function myCheckA($in) { return isset($in); } function myCheck($in) { global $$in; return isset($$in); } $var1='Something'; $var2='var1'; echo 'Set: ' . isset($$var2), "\n"; $var2='nope'; echo 'Set: ' . isset($$var2), "\n"; $var2='var1'; echo 'Set: ' . myCheck($var2), "\n"; $var2='nope'; var_dump($$var2); var_dump($$var2); echo 'Set: ' . myCheck($var2), "\n"; var_dump($$var2); ?>

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)
8.3.70.0090.00616.75
8.3.60.0160.00318.68
8.3.50.0150.00521.15
8.3.40.0120.00318.79
8.3.30.0110.00418.67
8.3.20.0000.00818.82
8.3.10.0090.00020.96
8.3.00.0080.00021.78
8.2.180.0090.00916.35
8.2.170.0090.00622.96
8.2.160.0170.00320.57
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0040.00421.04
8.2.110.0060.00321.07
8.2.100.0000.01117.84
8.2.90.0040.00419.64
8.2.80.0140.00317.97
8.2.70.0000.00817.93
8.2.60.0070.00318.03
8.2.50.0060.00318.10
8.2.40.0000.00918.03
8.2.30.0070.00019.36
8.2.20.0000.00717.71
8.2.10.0060.00317.82
8.2.00.0060.00317.77
8.1.280.0120.00625.92
8.1.270.0030.00623.99
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0090.00023.97
8.1.230.0000.01122.68
8.1.220.0030.00617.76
8.1.210.0000.00819.02
8.1.200.0120.00017.48
8.1.190.0030.00517.35
8.1.180.0000.00818.10
8.1.170.0000.00918.45
8.1.160.0000.00718.92
8.1.150.0060.00318.66
8.1.140.0000.00717.47
8.1.130.0000.00817.91
8.1.120.0000.00717.53
8.1.110.0070.00017.39
8.1.100.0050.00217.46
8.1.90.0030.00517.48
8.1.80.0020.00517.51
8.1.70.0050.00317.34
8.1.60.0060.00317.49
8.1.50.0070.00017.53
8.1.40.0060.00317.61
8.1.30.0060.00317.60
8.1.20.0050.00317.66
8.1.10.0070.00017.51
8.1.00.0000.00717.52
8.0.300.0000.00819.71
8.0.290.0080.00016.75
8.0.280.0030.00318.37
8.0.270.0040.00417.29
8.0.260.0030.00316.90
8.0.250.0040.00417.05
8.0.240.0000.00816.98
8.0.230.0030.00416.93
8.0.220.0040.00416.88
8.0.210.0070.00016.86
8.0.200.0000.00717.08
8.0.190.0000.00717.01
8.0.180.0000.00716.98
8.0.170.0040.00416.92
8.0.160.0050.00316.98
8.0.150.0020.00516.78
8.0.140.0030.00516.81
8.0.130.0000.00513.37
8.0.120.0000.00816.95
8.0.110.0000.00716.96
8.0.100.0000.00717.03
8.0.90.0070.00016.96
8.0.80.0080.01116.96
8.0.70.0000.00717.10
8.0.60.0040.00416.86
8.0.50.0030.00616.83
8.0.30.0100.00716.94
8.0.20.0080.01217.46
8.0.10.0030.00516.98
8.0.00.0100.00716.73
7.4.330.0000.00516.67
7.4.320.0000.00616.54
7.4.300.0030.00316.52
7.4.290.0070.00016.52
7.4.280.0070.00016.42
7.4.270.0000.00716.53
7.4.260.0000.00613.40
7.4.250.0020.00516.51
7.4.240.0070.00016.48
7.4.230.0000.00716.55
7.4.220.0000.01816.40
7.4.210.0100.00516.54
7.4.200.0000.00716.52
7.4.190.0030.00316.72
7.4.160.0130.00316.72
7.4.150.0160.01017.40
7.4.140.0120.01217.86
7.4.130.0130.00816.50
7.4.120.0070.01016.58
7.4.110.0060.01116.54
7.4.100.0090.01416.53
7.4.90.0090.00916.49
7.4.80.0060.01319.39
7.4.70.0090.00816.50
7.4.60.0060.01216.60
7.4.50.0000.00816.68
7.4.40.0120.00322.77
7.4.30.0030.01416.75
7.4.00.0080.00815.27
7.3.330.0030.00313.39
7.3.320.0000.00513.16
7.3.310.0040.00416.36
7.3.300.0030.00316.23
7.3.290.0070.00716.43
7.3.280.0110.00516.39
7.3.270.0130.00517.40
7.3.260.0110.00918.24
7.3.250.0130.00816.45
7.3.240.0090.01216.67
7.3.230.0160.00016.64
7.3.210.0100.00616.61
7.3.200.0110.00619.39
7.3.190.0070.01216.43
7.3.180.0110.00516.34
7.3.170.0130.00316.34
7.3.160.0100.00616.45
7.3.120.0060.00914.75
7.3.110.0000.01514.91
7.3.100.0030.00914.84
7.3.90.0030.01314.88
7.3.80.0060.00914.65
7.3.70.0000.01614.98
7.3.60.0090.00614.79
7.3.50.0120.00314.73
7.3.40.0110.00414.86
7.3.30.0000.01414.73
7.3.20.0030.01516.71
7.3.10.0120.00316.42
7.3.00.0130.00516.58
7.2.330.0110.00616.64
7.2.320.0040.01416.60
7.2.310.0100.01416.59
7.2.300.0080.00916.43
7.2.290.0120.00416.70
7.2.240.0040.00715.10
7.2.230.0000.01415.11
7.2.220.0080.00815.29
7.2.210.0040.00715.26
7.2.200.0110.00415.10
7.2.190.0090.00614.90
7.2.180.0060.00915.15
7.2.170.0000.01115.12
7.2.160.0080.00314.96
7.2.150.0060.00916.92
7.2.140.0080.00616.99
7.2.130.0040.01216.88
7.2.120.0080.00716.94
7.2.110.0070.01016.87
7.2.100.0120.00716.71
7.2.90.0060.00716.91
7.2.80.0080.00716.97
7.2.70.0080.01016.92
7.2.60.0090.00316.94
7.2.50.0100.00816.72
7.2.40.0030.01216.65
7.2.30.0050.00916.95
7.2.20.0130.00516.71
7.2.10.0100.00416.97
7.2.00.0070.00817.74
7.1.330.0070.00715.87
7.1.320.0030.01215.66
7.1.310.0100.00615.96
7.1.300.0060.00615.70
7.1.290.0030.00915.84
7.1.280.0040.01115.85
7.1.270.0040.01215.58
7.1.260.0000.01115.93
7.1.250.0090.00615.69
7.1.240.0110.00015.95
7.1.230.0080.00415.64
7.1.220.0070.00315.70
7.1.210.0040.00815.68
7.1.200.0060.01015.51
7.1.190.0080.00415.84
7.1.180.0090.01015.58
7.1.170.0040.01115.82
7.1.160.0070.00715.32
7.1.150.0030.01015.59
7.1.140.0030.00715.62
7.1.130.0100.00715.56
7.1.120.0120.00415.46
7.1.110.0070.01015.76
7.1.100.0540.00716.90
7.1.90.0100.00715.91
7.1.80.0120.00315.61
7.1.70.0070.00316.47
7.1.60.0130.00617.58
7.1.50.0090.00816.28
7.1.40.0160.00315.69
7.1.30.0160.00015.55
7.1.20.0060.01015.45
7.1.10.0110.01115.64
7.1.00.0110.01718.96
7.0.330.0170.00015.33
7.0.320.0110.00415.12
7.0.310.0130.00715.29
7.0.300.0030.01015.31
7.0.290.0040.01115.05
7.0.280.0070.00315.32
7.0.270.0040.01115.14
7.0.260.0180.00415.38
7.0.250.0090.01315.18
7.0.240.0150.00715.25
7.0.230.0090.00915.45
7.0.220.0110.00715.26
7.0.210.0110.00815.51
7.0.200.0100.00315.92
7.0.190.0100.00715.43
7.0.180.0100.00715.44
7.0.170.0120.00615.28
7.0.160.0140.00315.44
7.0.150.0120.00815.27
7.0.140.0080.04118.66
7.0.130.0130.00714.80
7.0.120.0090.00915.41
7.0.110.0060.00915.18
7.0.100.0100.02417.62
7.0.90.0160.03817.60
7.0.80.0080.02317.55
7.0.70.0090.04517.37
7.0.60.0130.03317.55
7.0.50.0130.02217.90
7.0.40.0070.03116.53
7.0.30.0090.04316.60
7.0.20.0050.02516.58
7.0.10.0130.04016.75
7.0.00.0060.03416.58
5.6.380.0120.00314.03
5.6.370.0070.00414.21
5.6.360.0100.00714.30
5.6.350.0040.00714.36
5.6.340.0090.00614.21
5.6.330.0060.00914.32
5.6.320.0030.00914.01
5.6.310.0040.01213.96
5.6.300.0150.00814.01
5.6.290.0170.00014.48
5.6.280.0080.03517.54
5.6.270.0120.00014.38
5.6.260.0000.01214.52
5.6.250.0070.04417.48
5.6.240.0090.04917.41
5.6.230.0140.02317.40
5.6.220.0020.05117.33
5.6.210.0090.02617.39
5.6.200.0020.05217.79
5.6.190.0080.03917.57
5.6.180.0130.03817.51
5.6.170.0060.04017.55
5.6.160.0070.02717.66
5.6.150.0100.04317.52
5.6.140.0090.02617.44
5.6.130.0100.04517.81
5.6.120.0050.04817.48
5.6.110.0080.04517.37
5.6.100.0060.04117.64
5.6.90.0070.03417.55
5.6.80.0180.03017.31
5.6.70.0080.04317.13
5.6.60.0110.04117.25
5.6.50.0080.02917.42
5.6.40.0080.05017.37
5.6.30.0000.04617.29
5.6.20.0060.04517.22
5.6.10.0160.03817.34
5.6.00.0070.02817.29
5.5.380.0040.02415.85
5.5.370.0030.04815.60
5.5.360.0070.04415.88
5.5.350.0130.03315.83
5.5.340.0120.03815.88
5.5.330.0130.03815.91
5.5.320.0070.02516.01
5.5.310.0090.03816.07
5.5.300.0120.02816.04
5.5.290.0120.04015.96
5.5.280.0090.03316.07
5.5.270.0050.04116.00
5.5.260.0100.04215.90
5.5.250.0040.03715.72
5.5.240.0050.04415.64
5.5.230.0050.02715.62
5.5.220.0070.04015.64
5.5.210.0060.04315.64
5.5.200.0060.04015.73
5.5.190.0030.04015.57
5.5.180.0050.02715.63
5.5.170.0040.00411.13
5.5.160.0090.04215.82
5.5.150.0050.04215.58
5.5.140.0000.03415.64
5.5.130.0090.03715.71
5.5.120.0030.02615.61
5.5.110.0060.04415.62
5.5.100.0110.02615.68
5.5.90.0050.02415.67
5.5.80.0100.02215.54
5.5.70.0020.04515.61
5.5.60.0060.04315.61
5.5.50.0050.04515.42
5.5.40.0030.04015.70
5.5.30.0060.04115.56
5.5.20.0110.03815.56
5.5.10.0110.02615.58
5.5.00.0030.03315.53
5.4.450.0040.04415.19
5.4.440.0100.04315.27
5.4.430.0090.03015.06
5.4.420.0050.03315.27
5.4.410.0080.04115.19
5.4.400.0100.04115.07
5.4.390.0030.03715.02
5.4.380.0070.04014.97
5.4.370.0060.04015.01
5.4.360.0080.03815.01
5.4.350.0080.03314.99
5.4.340.0030.02915.06
5.4.330.0000.00811.26
5.4.320.0100.03914.89
5.4.310.0070.03815.10
5.4.300.0030.04415.13
5.4.290.0130.03115.03
5.4.280.0090.01714.90
5.4.270.0050.03715.05
5.4.260.0050.02514.88
5.4.250.0080.03815.01
5.4.240.0030.04214.89
5.4.230.0050.04015.16
5.4.220.0120.03515.06
5.4.210.0030.04115.02
5.4.200.0070.03614.99
5.4.190.0030.02415.05
5.4.180.0020.04214.87
5.4.170.0100.03515.18
5.4.160.0090.03115.08
5.4.150.0050.03714.99
5.4.140.0090.03413.64
5.4.130.0060.03513.80
5.4.120.0060.03413.71
5.4.110.0070.02013.79
5.4.100.0110.02313.84
5.4.90.0070.01813.83
5.4.80.0050.03813.80
5.4.70.0100.03613.80
5.4.60.0030.02313.61
5.4.50.0100.02213.63
5.4.40.0070.02813.63
5.4.30.0070.03813.81
5.4.20.0050.04213.69
5.4.10.0050.03713.68
5.4.00.0130.03313.39
5.3.290.0030.03212.83
5.3.280.0030.04112.78
5.3.270.0080.03212.73
5.3.260.0020.04112.72
5.3.250.0070.02512.74
5.3.240.0070.03912.74
5.3.230.0030.04212.74
5.3.220.0100.03412.72
5.3.210.0100.02512.75
5.3.200.0100.03712.70
5.3.190.0030.03212.72
5.3.180.0070.03212.68
5.3.170.0030.03812.76
5.3.160.0050.03012.79
5.3.150.0080.02712.79
5.3.140.0030.02512.76
5.3.130.0030.04512.73
5.3.120.0050.04112.72
5.3.110.0080.03612.70
5.3.100.0060.02112.46
5.3.90.0050.04012.48
5.3.80.0080.03812.49
5.3.70.0080.03112.53
5.3.60.0070.02712.48
5.3.50.0040.04412.43
5.3.40.0070.04212.47
5.3.30.0060.03412.40
5.3.20.0070.03212.36
5.3.10.0080.04112.24
5.3.00.0040.02812.22
5.2.170.0020.03511.24
5.2.160.0030.02111.24
5.2.150.0020.03711.24
5.2.140.0020.03511.24
5.2.130.0020.04111.24
5.2.120.0030.03311.24
5.2.110.0020.02911.24
5.2.100.0050.02711.24
5.2.90.0020.03011.24
5.2.80.0050.03311.24
5.2.70.0020.03511.24
5.2.60.0080.01911.24
5.2.50.0050.03211.24
5.2.40.0060.02611.24
5.2.30.0040.03411.24
5.2.20.0030.03411.24
5.2.10.0060.02811.24
5.2.00.0080.02311.24
5.1.60.0020.03211.24
5.1.50.0050.02811.24
5.1.40.0020.02311.24
5.1.30.0030.02011.24
5.1.20.0050.03011.24
5.1.10.0020.02011.24
5.1.00.0060.01711.24
5.0.50.0030.02211.24
5.0.40.0070.02111.24
5.0.30.0030.03311.24
5.0.20.0050.01611.24
5.0.10.0070.01811.24
5.0.00.0000.02711.24
4.4.90.0020.01011.24
4.4.80.0000.01311.24
4.4.70.0040.02111.24
4.4.60.0000.01711.24
4.4.50.0050.01011.24
4.4.40.0020.02911.24
4.4.30.0030.01711.24
4.4.20.0050.01711.24
4.4.10.0060.01311.24
4.4.00.0040.02711.24
4.3.110.0050.01711.24
4.3.100.0020.01511.24
4.3.90.0020.01111.24
4.3.80.0000.03111.24
4.3.70.0060.01611.24
4.3.60.0000.02511.24
4.3.50.0030.01211.24
4.3.40.0050.02611.24
4.3.30.0020.01911.24
4.3.20.0030.02011.24
4.3.10.0030.01811.24
4.3.00.0030.01711.24

preferences:
45.05 ms | 401 KiB | 5 Q