3v4l.org

run code in 300+ PHP versions simultaneously
<?php $nullvar = null; $nullstr = ''; $notnull = 'foo'; $unset = 'something'; unset($unset); function quiet_dump($v) { ob_start(); echo '<pre>'; var_dump($v); echo '</pre>'; return ob_get_clean(); } $results = array( '<h1>Results</h1>' , '<br/>$nullvar = ' , quiet_dump(isset($nullvar), true) , '<br/> $nullstr = ' , quiet_dump(isset($nullstr), true) , '<br/>$notnull = ' , quiet_dump(isset($notnull), true) , '<br/>$unset = ' , quiet_dump(isset($unset), true) ); echo implode(' ',$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)
8.3.40.0120.00318.79
8.3.30.0140.00318.67
8.3.20.0120.00618.60
8.3.10.0080.00020.27
8.3.00.0100.01019.38
8.2.170.0040.01122.96
8.2.160.0100.00321.02
8.2.150.0070.00424.18
8.2.140.0070.00424.66
8.2.130.0040.00426.16
8.2.120.0050.00319.48
8.2.110.0060.00621.04
8.2.100.0080.00317.97
8.2.90.0070.00420.96
8.2.80.0050.00318.05
8.2.70.0090.00017.50
8.2.60.0080.00417.79
8.2.50.0030.00518.07
8.2.40.0000.00818.03
8.2.30.0040.00418.19
8.2.20.0030.00617.71
8.2.10.0000.00717.75
8.2.00.0000.00717.76
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00622.42
8.1.230.0060.00620.89
8.1.220.0030.00517.74
8.1.210.0030.00518.77
8.1.200.0030.00617.25
8.1.190.0050.00217.53
8.1.180.0030.00618.10
8.1.170.0000.00818.84
8.1.160.0070.00018.84
8.1.150.0050.00318.57
8.1.140.0070.00017.50
8.1.130.0070.00017.91
8.1.120.0070.00017.39
8.1.110.0000.00717.48
8.1.100.0000.00717.51
8.1.90.0040.00417.49
8.1.80.0000.00817.45
8.1.70.0000.00817.40
8.1.60.0040.00417.59
8.1.50.0000.00917.49
8.1.40.0000.00817.46
8.1.30.0000.00817.61
8.1.20.0000.00717.68
8.1.10.0060.00317.57
8.1.00.0040.00417.48
8.0.300.0030.00620.02
8.0.290.0000.00716.75
8.0.280.0000.00718.42
8.0.270.0050.00317.20
8.0.260.0060.00016.76
8.0.250.0040.00417.02
8.0.240.0080.00016.94
8.0.230.0000.00716.97
8.0.220.0060.00316.84
8.0.210.0070.00016.84
8.0.200.0070.00016.89
8.0.190.0040.00416.87
8.0.180.0030.00516.88
8.0.170.0030.00716.91
8.0.160.0050.00216.88
8.0.150.0040.00416.85
8.0.140.0040.00316.78
8.0.130.0030.00313.43
8.0.120.0040.00416.93
8.0.110.0000.00716.79
8.0.100.0050.00216.79
8.0.90.0000.00816.95
8.0.80.0070.00716.86
8.0.70.0040.00416.91
8.0.60.0040.00416.96
8.0.50.0040.00416.86
8.0.30.0100.01017.13
8.0.20.0140.00317.06
8.0.10.0000.00817.09
8.0.00.0110.01016.86
7.4.330.0050.00013.00
7.4.320.0030.00316.63
7.4.300.0060.00016.54
7.4.290.0070.00016.50
7.4.280.0080.00016.53
7.4.270.0030.00316.64
7.4.260.0050.00013.34
7.4.250.0030.00716.41
7.4.240.0070.00016.58
7.4.230.0070.00016.72
7.4.220.0100.01016.63
7.4.210.0060.00916.65
7.4.200.0040.00416.72
7.4.190.0000.00716.67
7.4.160.0150.00016.65
7.4.150.0120.01216.34
7.4.140.0120.01016.55
7.4.130.0110.00616.48
7.4.120.0100.00816.59
7.4.110.0140.00416.34
7.4.100.0170.00716.58
7.4.90.0140.00416.54
7.4.80.0090.01219.39
7.4.70.0140.00716.42
7.4.60.0110.00816.42
7.4.50.0000.00916.57
7.4.40.0040.01216.59
7.4.30.0130.00316.50
7.4.10.0120.00615.09
7.4.00.0080.01014.91
7.3.330.0030.00313.24
7.3.320.0030.00313.19
7.3.310.0000.00816.17
7.3.300.0030.00316.28
7.3.290.0030.01716.23
7.3.280.0080.00716.26
7.3.270.0060.01316.31
7.3.260.0150.00616.27
7.3.250.0060.01216.43
7.3.240.0070.01016.43
7.3.230.0150.00916.60
7.3.210.0140.00716.61
7.3.200.0060.00916.41
7.3.190.0080.01216.62
7.3.180.0100.00616.41
7.3.170.0060.00916.57
7.3.160.0120.00916.33
7.3.130.0100.01014.90
7.3.120.0060.01114.93
7.3.110.0070.00814.83
7.3.100.0080.00514.70
7.3.90.0060.00914.78
7.3.80.0070.00714.86
7.3.70.0040.01114.76
7.3.60.0060.00714.72
7.3.50.0020.01214.79
7.3.40.0060.00614.51
7.3.30.0030.00914.67
7.3.20.0090.00616.70
7.3.10.0060.01016.58
7.3.00.0050.00716.66
7.2.330.0120.00616.82
7.2.320.0100.00716.42
7.2.310.0100.01016.76
7.2.300.0160.00616.74
7.2.290.0120.00616.41
7.2.260.0060.01314.93
7.2.250.0090.00515.01
7.2.240.0060.00915.08
7.2.230.0040.01215.11
7.2.220.0070.00814.97
7.2.210.0070.00815.13
7.2.200.0060.00614.97
7.2.190.0040.00815.01
7.2.180.0040.00814.93
7.2.170.0090.00414.80
7.2.160.0040.00915.03
7.2.150.0060.01016.86
7.2.140.0050.01016.90
7.2.130.0070.00616.66
7.2.120.0050.00816.89
7.2.110.0060.00916.96
7.2.100.0030.00816.89
7.2.90.0100.00316.85
7.2.80.0040.01116.95
7.2.70.0050.00816.87
7.2.60.0100.00316.85
7.2.50.0080.00816.84
7.2.40.0030.01116.89
7.2.30.0030.01016.96
7.2.20.0070.00616.76
7.2.10.0060.00716.86
7.2.00.0060.00917.55
7.1.330.0060.00815.84
7.1.320.0080.00715.77
7.1.310.0070.00615.67
7.1.300.0050.00815.66
7.1.290.0080.00615.72
7.1.280.0050.00915.63
7.1.270.0080.00315.78
7.1.260.0070.00615.78
7.1.250.0070.00715.86
7.1.240.0000.01515.87
7.1.230.0080.00815.69
7.1.220.0030.00915.82
7.1.210.0030.01015.82
7.1.200.0060.00315.66
7.1.190.0040.00715.79
7.1.180.0000.01415.91
7.1.170.0120.00615.70
7.1.160.0080.00315.79
7.1.150.0030.01215.90
7.1.140.0040.01215.55
7.1.130.0080.00415.53
7.1.120.0050.00515.66
7.1.110.0060.00315.89
7.1.100.0030.01016.67
7.1.90.0030.01415.94
7.1.80.0040.00415.80
7.1.70.0030.00716.45
7.1.60.0050.01217.69
7.1.50.0040.00916.16
7.1.40.0070.00415.81
7.1.30.0070.00415.84
7.1.20.0080.00415.90
7.1.10.0090.00615.54
7.1.00.0080.03619.18
7.0.330.0060.00615.22
7.0.320.0110.00315.37
7.0.310.0090.00315.18
7.0.300.0030.01015.37
7.0.290.0090.00615.45
7.0.280.0000.01415.02
7.0.270.0000.01115.27
7.0.260.0000.01115.20
7.0.250.0080.00315.41
7.0.240.0030.01215.46
7.0.230.0040.01115.42
7.0.220.0090.00315.40
7.0.210.0000.00815.59
7.0.200.0180.00515.05
7.0.190.0070.00715.55
7.0.180.0090.00315.39
7.0.170.0120.00015.19
7.0.160.0040.00815.51
7.0.150.0030.00715.45
7.0.140.0020.04418.62
7.0.130.0000.01115.57
7.0.120.0050.03818.57
7.0.110.0000.00815.49
7.0.100.0040.00715.42
7.0.90.0030.00715.54
7.0.80.0040.00415.31
7.0.70.0030.01015.51
7.0.60.0030.04617.65
7.0.50.0130.03316.60
7.0.40.0070.04816.87
7.0.30.0180.04116.90
7.0.20.0170.04116.71
7.0.10.0130.02516.76
7.0.00.0080.02516.81
5.6.400.0100.00314.34
5.6.390.0030.00514.24
5.6.380.0000.01714.64
5.6.370.0090.00313.84
5.6.360.0060.00914.47
5.6.350.0070.00714.25
5.6.340.0070.00714.02
5.6.330.0060.00314.37
5.6.320.0030.00914.17
5.6.310.0090.00314.27
5.6.300.0000.01014.03
5.6.290.0070.00714.21
5.6.280.0080.03817.80
5.6.270.0030.00514.14
5.6.260.0030.00914.33
5.6.250.0030.01014.46
5.6.240.0070.00714.42
5.6.230.0090.00614.24
5.6.220.0070.00414.62
5.6.210.0070.04417.37
5.6.200.0050.02516.18
5.6.190.0080.03717.55
5.6.180.0180.02817.53
5.6.170.0120.02417.51
5.6.160.0100.04017.30
5.6.150.0050.02416.14
5.6.140.0090.02916.28
5.6.130.0100.04016.26
5.6.120.0050.04717.74
5.6.110.0070.03817.76
5.6.100.0100.04317.59
5.6.90.0150.03317.60
5.6.80.0080.04417.37
5.6.70.2220.02217.30
5.6.60.0120.00314.18
5.6.50.0070.00714.30
5.6.40.0050.00514.37
5.6.30.0000.01714.42
5.6.20.0100.00314.20
5.6.10.0050.00314.03
5.6.00.0080.00614.28
5.5.380.0080.00614.43
5.5.370.0050.00514.04
5.5.360.0070.01014.45
5.5.350.0190.04217.27
5.5.340.0110.04016.11
5.5.330.0050.03017.43
5.5.320.0100.02217.11
5.5.310.0150.02417.39
5.5.300.0080.02016.12
5.5.290.0020.04516.18
5.5.280.0070.02417.54
5.5.270.0100.04017.57
5.5.260.0070.03317.60
5.5.250.0050.04717.39
5.5.240.0020.02317.09
5.5.230.0030.00914.09
5.5.220.0060.00314.01
5.5.210.0030.01213.99
5.5.200.0100.00314.27
5.5.190.0040.00813.82
5.5.180.0120.00314.07
5.5.170.0000.01114.45
5.5.160.0000.01314.24
5.5.150.0030.01014.24
5.5.140.0060.00614.01
5.5.130.0070.00714.06
5.5.120.0060.01214.27
5.5.110.0030.01214.25
5.5.100.0000.01514.39
5.5.90.0030.01314.33
5.5.80.0070.01013.97
5.5.70.0030.01014.26
5.5.60.0090.00614.34
5.5.50.0050.00914.01
5.5.40.0060.00914.19
5.5.30.0130.00714.32
5.5.20.0100.00914.19
5.5.10.0090.01214.18
5.5.00.0080.00814.27
5.4.450.0160.04015.18
5.4.440.0150.02415.16
5.4.430.0130.02915.14
5.4.420.0120.02215.15
5.4.410.0100.02515.32
5.4.400.0130.03015.04
5.4.390.0160.01815.02
5.4.380.0140.02515.07
5.4.370.0120.02115.16
5.4.360.0080.02315.13
5.4.350.0080.02415.01
5.4.340.0120.03014.86
5.4.330.0000.01011.19
5.4.320.0160.02515.07
5.4.310.0050.02115.09
5.4.300.0120.02115.09
5.4.290.0100.02215.15
5.4.280.0130.02115.07
5.4.270.0130.01915.11
5.4.260.0120.01815.24
5.4.250.0110.02315.02
5.4.240.0140.01815.13
5.4.230.0170.01714.77
5.4.220.0120.02815.23
5.4.210.0170.01715.11
5.4.200.0160.01714.88
5.4.190.0120.02215.04
5.4.180.0070.02515.19
5.4.170.0110.02114.93
5.4.160.0150.02014.89
5.4.150.0070.02314.87
5.4.140.0080.02413.70
5.4.130.0130.02213.71
5.4.120.0140.01713.77
5.4.110.0130.01713.56
5.4.100.0100.02013.61
5.4.90.0100.02213.73
5.4.80.0100.02313.63
5.4.70.0110.01613.79
5.4.60.0130.02813.69
5.4.50.0170.01513.82
5.4.40.0120.02013.83
5.4.30.0080.02313.82
5.4.20.0100.02213.72
5.4.10.0110.02113.76
5.4.00.0150.02013.27
5.3.290.0270.04014.59
5.3.280.0200.04314.49
5.3.270.0070.07714.57
5.3.260.0030.05014.51
5.3.250.1230.04714.61
5.3.240.2230.04314.68
5.3.230.1900.03714.59
5.3.220.1770.03314.79
5.3.210.1800.03314.58
5.3.200.1770.03714.67
5.3.190.1700.04314.69
5.3.180.1830.04014.64
5.3.170.1470.04014.54
5.3.160.1770.03714.54
5.3.150.1670.03014.53
5.3.140.0630.03314.53
5.3.130.0000.04314.55
5.3.120.0130.04314.52
5.3.110.1670.04714.47
5.3.100.2170.04013.97
5.3.90.0770.03314.02
5.3.80.0000.04013.95
5.3.70.0000.04014.09
5.3.60.0800.03014.01
5.3.50.1730.03313.86
5.3.40.1730.04013.97
5.3.30.2200.04014.05
5.3.20.1630.03013.60
5.3.10.1800.02713.80
5.3.00.1700.02713.57
5.2.170.1730.03711.08
5.2.160.0470.03011.23
5.2.150.0070.02711.20
5.2.140.0030.03311.07
5.2.130.0370.02711.23
5.2.120.1200.02311.06
5.2.110.1370.03011.01
5.2.100.1530.02311.25
5.2.90.1430.02311.03
5.2.80.1370.03011.02
5.2.70.1330.03711.18
5.2.60.1330.03010.98
5.2.50.1470.02310.90
5.2.40.1170.03310.91
5.2.30.1330.03710.98
5.2.20.1130.03310.88
5.2.10.1370.03010.98
5.2.00.1430.03310.75
5.1.60.1200.0239.93
5.1.50.1400.03010.09
5.1.40.1400.0239.96
5.1.30.1270.02310.28
5.1.20.1470.04310.32
5.1.10.1200.02710.23
5.1.00.1400.02710.06
5.0.50.0730.0208.46
5.0.40.0770.0308.50
5.0.30.0600.0308.28
5.0.20.0970.0208.18
5.0.10.0630.0178.18
5.0.00.0800.0438.15
4.4.90.0770.0207.99
4.4.80.0570.0177.99
4.4.70.0630.0137.99
4.4.60.0600.0177.99
4.4.50.0400.0177.99
4.4.40.0730.0307.99
4.4.30.0630.0137.99
4.4.20.0670.0177.99
4.4.10.0770.0277.99
4.4.00.0800.0377.99
4.3.110.0670.0207.99
4.3.100.0700.0177.99
4.3.90.0730.0177.99
4.3.80.0800.0277.99
4.3.70.0700.0207.99
4.3.60.0730.0237.99
4.3.50.0600.0177.99
4.3.40.0670.0307.99
4.3.30.0330.0207.99
4.3.20.0270.0177.99
4.3.10.0300.0177.99
4.3.00.0300.0177.99

preferences:
38.54 ms | 400 KiB | 5 Q