3v4l.org

run code in 300+ PHP versions simultaneously
<?php $nullvar = null; $nullstr = ''; $notnull = 'foo'; $unset = 'something'; unset($unset); function quiet_dump($v) { ob_start(); var_dump($v); return ob_get_clean(); } $results = array( '==Results==' , '$nullvar = ' . quiet_dump(isset($nullvar), true) , '$nullstr = ' . quiet_dump(isset($nullstr), true) , '$notnull = ' . quiet_dump(isset($notnull), true) , '$unset = ' . quiet_dump(isset($unset), true) ); echo implode("\n",$results);

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)
8.3.70.0090.00916.38
8.3.60.0120.00618.33
8.3.50.0110.01016.62
8.3.40.0070.01118.82
8.3.30.0040.01118.84
8.3.20.0040.00418.77
8.3.10.0060.00320.48
8.3.00.0050.00317.50
8.2.180.0150.00416.50
8.2.170.0120.00322.96
8.2.160.0090.00622.26
8.2.150.0030.00524.18
8.2.140.0050.00324.66
8.2.130.0070.00026.16
8.2.120.0000.00719.95
8.2.110.0040.00421.03
8.2.100.0080.00417.91
8.2.90.0000.00819.21
8.2.80.0040.00418.04
8.2.70.0080.00017.50
8.2.60.0000.00818.03
8.2.50.0040.00419.21
8.2.40.0000.00818.16
8.2.30.0050.00318.15
8.2.20.0040.00417.69
8.2.10.0050.00317.81
8.2.00.0090.00017.71
8.1.280.0030.01025.92
8.1.270.0040.00423.99
8.1.260.0000.00826.35
8.1.250.0080.00028.09
8.1.240.0030.00620.79
8.1.230.0040.00720.88
8.1.220.0000.00818.77
8.1.210.0080.00418.97
8.1.200.0000.00817.35
8.1.190.0040.00417.63
8.1.180.0080.00318.10
8.1.170.0030.00618.78
8.1.160.0080.00020.59
8.1.150.0040.00418.59
8.1.140.0040.00417.53
8.1.130.0030.00317.80
8.1.120.0040.00417.42
8.1.110.0030.00417.39
8.1.100.0040.00417.53
8.1.90.0000.00717.45
8.1.80.0040.00417.48
8.1.70.0000.00717.36
8.1.60.0000.01017.52
8.1.50.0070.00017.53
8.1.40.0000.00817.54
8.1.30.0000.00717.63
8.1.20.0000.00817.71
8.1.10.0050.00317.49
8.1.00.0000.00717.45
8.0.300.0030.00519.94
8.0.290.0040.00416.75
8.0.280.0000.00718.38
8.0.270.0000.00717.23
8.0.260.0050.00318.49
8.0.250.0070.00016.93
8.0.240.0080.00317.03
8.0.230.0070.00016.98
8.0.220.0000.00716.92
8.0.210.0070.00017.00
8.0.200.0070.00016.90
8.0.190.0040.00416.97
8.0.180.0040.00416.93
8.0.170.0080.00017.01
8.0.160.0000.00716.90
8.0.150.0000.00816.84
8.0.140.0080.00316.91
8.0.130.0050.00013.36
8.0.120.0000.00716.88
8.0.110.0050.00316.81
8.0.100.0030.00516.80
8.0.90.0070.00016.99
8.0.80.0090.01216.92
8.0.70.0040.00416.89
8.0.60.0000.00716.96
8.0.50.0080.00016.90
8.0.30.0090.01017.06
8.0.20.0100.00917.18
8.0.10.0000.00716.91
8.0.00.0100.00916.66
7.4.330.0030.00314.84
7.4.320.0030.00316.64
7.4.300.0000.00616.65
7.4.290.0000.00716.52
7.4.280.0030.00616.54
7.4.270.0000.00716.53
7.4.260.0040.00413.30
7.4.250.0090.00016.49
7.4.240.0020.00516.64
7.4.230.0070.00016.56
7.4.220.0100.01316.49
7.4.210.0090.00916.57
7.4.200.0030.00316.62
7.4.190.0000.00716.79
7.4.160.0050.01116.40
7.4.150.0160.00617.18
7.4.140.0080.01117.18
7.4.130.0070.01216.59
7.4.120.0100.00816.68
7.4.110.0100.00716.51
7.4.100.0130.00316.61
7.4.90.0060.01216.55
7.4.80.0070.01118.80
7.4.70.0060.01116.60
7.4.60.0070.01116.46
7.4.50.0040.00416.38
7.4.40.0060.01022.27
7.4.30.0070.00716.52
7.4.00.0100.00715.13
7.3.330.0030.00313.14
7.3.320.0080.00013.23
7.3.310.0030.00316.26
7.3.300.0070.00016.29
7.3.290.0100.00616.30
7.3.280.0080.01016.25
7.3.270.0070.01117.18
7.3.260.0150.00518.24
7.3.250.0130.00616.30
7.3.240.0080.00816.67
7.3.230.0100.00716.39
7.3.210.0080.00816.29
7.3.200.0150.00619.39
7.3.190.0030.01516.53
7.3.180.0130.00616.40
7.3.170.0170.00716.49
7.3.160.0060.01016.46
7.3.120.0030.00815.06
7.2.330.0110.00616.72
7.2.320.0040.01916.39
7.2.310.0070.01016.67
7.2.300.0060.01216.51
7.2.290.0070.01016.79
7.2.00.0060.00819.12
7.1.100.0000.01518.07
7.1.70.0040.00417.11
7.1.60.0130.01019.40
7.1.50.0090.01216.61
7.1.00.0030.06322.32
7.0.200.0020.00516.75
7.0.140.0070.07022.18
7.0.60.0200.06019.98
7.0.50.0030.05717.87
7.0.40.0100.08317.75
7.0.30.0030.07717.76
7.0.20.0100.06317.77
7.0.10.0130.07317.85
7.0.00.0070.07717.67
5.6.280.0030.07321.10
5.6.210.0100.07320.62
5.6.200.0130.06718.18
5.6.190.0030.07718.12
5.6.180.0170.05318.29
5.6.170.0070.05018.12
5.6.160.0100.08018.29
5.6.150.0070.08018.29
5.6.140.0100.07718.18
5.6.130.0300.04018.15
5.6.120.0100.07018.18
5.6.110.0070.07318.18
5.6.100.0130.07318.17
5.6.90.0070.08018.17
5.6.80.0070.07317.58
5.6.70.0030.06317.57
5.6.60.0130.07717.53
5.6.50.0100.07017.54
5.6.40.0030.07717.63
5.6.30.0000.08317.63
5.6.20.0130.07317.64
5.6.10.0030.08017.51
5.6.00.0030.06317.58
5.5.350.4030.05320.33
5.5.340.0100.05017.99
5.5.330.0100.04317.93
5.5.320.0070.08317.98
5.5.310.0130.07317.92
5.5.300.0000.05317.95
5.5.290.0100.07718.08
5.5.280.0170.07018.03
5.5.270.0100.08318.08
5.5.260.0070.07718.04
5.5.250.0070.07717.89
5.5.240.0100.07317.40
5.5.230.0100.06317.30
5.5.220.0070.06317.33
5.5.210.0070.05317.36
5.5.200.0030.08017.32
5.5.190.0000.04717.38
5.5.180.0070.07717.44
5.5.160.0100.07317.33
5.5.150.0070.03717.31
5.5.140.0030.04017.30
5.5.130.0030.04017.34
5.5.120.0030.04017.27
5.5.110.0100.03017.28
5.5.100.0000.04017.23
5.5.90.0070.03317.27
5.5.80.0070.04317.26
5.5.70.0070.03317.23
5.5.60.0000.03717.27
5.5.50.0100.04017.19
5.5.40.0000.03717.21
5.5.30.0030.03717.21
5.5.20.0030.04017.27
5.5.10.0070.03317.31
5.5.00.0000.04017.17
5.4.450.0130.05319.22
5.4.440.0200.06719.42
5.4.430.0200.06319.46
5.4.420.0000.05019.50
5.4.410.0030.08019.29
5.4.400.0070.07719.02
5.4.390.0070.06319.17
5.4.380.0130.04019.01
5.4.370.0070.05019.04
5.4.360.0100.07719.13
5.4.350.0130.05319.11
5.4.340.0030.04019.05
5.4.320.0100.07318.86
5.4.310.0100.03319.27
5.4.300.0000.04019.09
5.4.290.0130.02719.27
5.4.280.0070.03318.90
5.4.270.0000.04718.98
5.4.260.0100.03019.09
5.4.250.0030.03719.04
5.4.240.0070.03319.12
5.4.230.0000.03719.09
5.4.220.0070.04319.15
5.4.210.0070.04719.02
5.4.200.0070.03319.04
5.4.190.0070.03319.13
5.4.180.0070.04019.07
5.4.170.0070.03319.00
5.4.160.0070.03318.99
5.4.150.0000.04019.07
5.4.140.0000.03716.44
5.4.130.0100.03316.38
5.4.120.0000.03716.38
5.4.110.0070.03316.23
5.4.100.0030.04016.35
5.4.90.0070.03016.43
5.4.80.0000.03716.28
5.4.70.0100.03016.41
5.4.60.0000.03716.36
5.4.50.0000.03716.32
5.4.40.0000.03716.45
5.4.30.0000.03716.23
5.4.20.0030.03316.31
5.4.10.0000.03716.42
5.4.00.0070.03015.87
5.3.290.0100.04314.67
5.3.280.0030.03714.56
5.3.270.0030.03714.66
5.3.260.0030.03714.60
5.3.250.0030.04014.46
5.3.240.0030.04314.60
5.3.230.0000.04014.67
5.3.220.0000.04014.61
5.3.210.0070.03314.62
5.3.200.0130.02714.63
5.3.190.0070.04014.63
5.3.180.0000.03714.57
5.3.170.0070.03314.52
5.3.160.0000.03714.66
5.3.150.0000.04314.59
5.3.140.0030.03314.41
5.3.130.0070.03714.67
5.3.120.0100.03014.54
5.3.110.0000.04014.40
5.3.100.0030.04014.04
5.3.90.0030.03714.00
5.3.80.0030.03714.02
5.3.70.0000.05314.00
5.3.60.0030.06014.00
5.3.50.0100.06314.15
5.3.40.0070.08013.94
5.3.30.0000.05713.90
5.3.20.0030.07713.66
5.3.10.0030.04313.55
5.3.00.0130.03313.63
5.2.170.0100.05711.19
5.2.160.0130.05011.19
5.2.150.0030.06011.16
5.2.140.0030.04311.15
5.2.130.0030.04011.21
5.2.120.0030.04310.95
5.2.110.0030.04711.21
5.2.100.0030.05011.16
5.2.90.0130.05710.99
5.2.80.0130.05711.09
5.2.70.0070.05311.30
5.2.60.0030.06311.15
5.2.50.0070.06010.87
5.2.40.0100.02711.03
5.2.30.0000.04311.02
5.2.20.0030.06710.99
5.2.10.0030.06010.90
5.2.00.0100.05310.76
5.1.60.0000.05010.05
5.1.50.0000.04010.07
5.1.40.0000.03010.08
5.1.30.0030.06010.33
5.1.20.0070.05710.43
5.1.10.0070.03710.04
5.1.00.0030.03310.12
5.0.50.0030.0308.76
5.0.40.0000.0338.67
5.0.30.0030.0608.67
5.0.20.0070.0438.67
5.0.10.0100.0338.67
5.0.00.0070.0508.67
4.4.90.0000.0378.67
4.4.80.0000.0308.67
4.4.70.0030.0378.67
4.4.60.0000.0238.67
4.4.50.0000.0378.67
4.4.40.0000.0478.67
4.4.30.0030.0238.67
4.4.20.0000.0338.67
4.4.10.0000.0408.67
4.4.00.0000.0438.67
4.3.110.0070.0378.67
4.3.100.0000.0378.67
4.3.90.0070.0338.67
4.3.80.0030.0478.67
4.3.70.0030.0278.67
4.3.60.0070.0338.67
4.3.50.0070.0308.67
4.3.40.0030.0408.67
4.3.30.0000.0208.67
4.3.20.0000.0378.67
4.3.10.0000.0278.67
4.3.00.0030.0208.67

preferences:
53.14 ms | 401 KiB | 5 Q