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)
8.3.60.0150.00018.31
8.3.50.0170.00522.01
8.3.40.0090.00918.85
8.3.30.0100.00319.09
8.3.20.0120.00320.26
8.3.10.0070.00023.61
8.3.00.0040.00422.43
8.2.180.0100.00618.43
8.2.170.0100.00722.96
8.2.160.0090.00422.16
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0030.00617.75
8.2.110.0090.00022.24
8.2.100.0080.00417.83
8.2.90.0040.00419.30
8.2.80.0050.00317.97
8.2.70.0050.00317.50
8.2.60.0000.00918.05
8.2.50.0000.00918.07
8.2.40.0060.00318.28
8.2.30.0000.00718.08
8.2.20.0040.00417.69
8.2.10.0050.00217.76
8.2.00.0050.00217.71
8.1.280.0000.01725.92
8.1.270.0040.00423.97
8.1.260.0080.00026.35
8.1.250.0070.01028.09
8.1.240.0060.00323.96
8.1.230.0040.00819.17
8.1.220.0000.00817.79
8.1.210.0000.00818.77
8.1.200.0040.00417.35
8.1.190.0050.00517.51
8.1.180.0040.00418.10
8.1.170.0040.00418.56
8.1.160.0040.00422.05
8.1.150.0000.00718.59
8.1.140.0000.00717.48
8.1.130.0070.00017.81
8.1.120.0040.00417.39
8.1.110.0000.00717.49
8.1.100.0040.00417.45
8.1.90.0000.00717.46
8.1.80.0030.00517.50
8.1.70.0000.00717.48
8.1.60.0070.00317.50
8.1.50.0040.00417.63
8.1.40.0030.00517.41
8.1.30.0030.00617.65
8.1.20.0000.00917.59
8.1.10.0060.00317.55
8.1.00.0000.00717.37
8.0.300.0040.00418.77
8.0.290.0070.00017.17
8.0.280.0030.00318.34
8.0.270.0070.00017.29
8.0.260.0070.00016.96
8.0.250.0000.00717.01
8.0.240.0030.00717.00
8.0.230.0030.00316.95
8.0.220.0050.00216.82
8.0.210.0030.00316.82
8.0.200.0030.00316.97
8.0.190.0060.00316.96
8.0.180.0040.00416.96
8.0.170.0050.00316.87
8.0.160.0040.00416.88
8.0.150.0000.00716.82
8.0.140.0000.00816.92
8.0.130.0000.00813.34
8.0.120.0040.00416.93
8.0.110.0070.00016.84
8.0.100.0050.00316.96
8.0.90.0030.00316.98
8.0.80.0030.00416.94
8.0.70.0000.00716.90
8.0.60.0030.00516.87
8.0.50.0040.00416.81
8.0.30.0160.00517.26
8.0.20.0130.00917.40
8.0.10.0040.00416.91
8.0.00.0100.00916.64
7.4.330.0020.00215.15
7.4.320.0070.00016.54
7.4.300.0040.00416.53
7.4.290.0040.00416.53
7.4.280.0000.00716.52
7.4.270.0030.00516.43
7.4.260.0030.00316.45
7.4.250.0040.00416.45
7.4.240.0000.00716.53
7.4.230.0070.00016.53
7.4.220.0090.01216.66
7.4.210.0100.00616.61
7.4.200.0000.00716.61
7.4.190.0030.00416.44
7.4.160.0060.01016.59
7.4.150.0130.00417.40
7.4.140.0150.00217.86
7.4.130.0080.00916.59
7.4.120.0090.01316.64
7.4.110.0160.00016.56
7.4.100.0030.01316.42
7.4.90.0100.00716.49
7.4.80.0090.01216.45
7.4.70.0130.01016.40
7.4.60.0170.00016.41
7.4.50.0040.00416.16
7.4.40.0060.00622.77
7.4.30.0090.01316.58
7.4.00.0090.00614.93
7.3.330.0060.00013.24
7.3.320.0000.00513.27
7.3.310.0000.00716.33
7.3.300.0000.00716.22
7.3.290.0060.00916.20
7.3.280.0120.00516.27
7.3.270.0100.00717.40
7.3.260.0030.01416.56
7.3.250.0100.00716.55
7.3.240.0060.00916.37
7.3.230.0090.00616.39
7.3.210.0090.00916.33
7.3.200.0100.00719.39
7.3.190.0040.01416.30
7.3.180.0090.00616.21
7.3.170.0060.00916.48
7.3.160.0100.00616.64
7.3.120.0110.00714.95
7.3.10.0070.00716.40
7.3.00.0000.01416.43
7.2.330.0030.01416.59
7.2.320.0100.00716.68
7.2.310.0040.01216.70
7.2.300.0090.00916.70
7.2.290.0120.00416.50
7.2.130.0090.00016.77
7.2.120.0070.00416.54
7.2.110.0090.00316.65
7.2.100.0120.00016.32
7.2.90.0110.00016.52
7.2.80.0040.00816.55
7.2.70.0060.00616.79
7.2.60.0160.01016.67
7.2.50.0100.01216.72
7.2.40.0050.00816.46
7.2.30.0060.01016.77
7.2.20.0120.00616.57
7.2.10.0120.01516.41
7.2.00.0070.00918.05
7.1.250.0110.00715.41
7.1.100.0060.01018.14
7.1.70.0000.00717.10
7.1.60.0100.01319.32
7.1.50.0070.01417.08
7.1.00.0000.08022.54
7.0.200.0150.00416.93
7.0.140.0000.07021.98
7.0.110.0170.05020.11
7.0.100.0100.09320.11
7.0.90.0130.05719.98
7.0.80.0100.06720.04
7.0.70.0070.05319.89
7.0.60.0100.03320.08
7.0.50.0030.04720.10
7.0.40.0100.03719.79
7.0.30.0070.06019.71
7.0.20.0130.04019.64
7.0.10.0130.04319.64
7.0.00.0030.05719.87
5.6.280.0100.06720.90
5.6.260.0070.08320.75
5.6.250.0100.07320.61
5.6.240.0100.08020.72
5.6.230.0030.09020.47
5.6.220.0070.04720.65
5.6.210.0000.08720.60
5.6.200.0100.05720.56
5.6.190.0130.06020.52
5.6.180.0070.06720.63
5.6.170.0070.06020.66
5.6.160.0030.04720.52
5.6.150.0000.04320.55
5.6.140.0030.05720.65
5.6.130.0070.04720.70
5.6.120.0030.04320.63
5.6.110.0070.03720.64
5.6.100.0000.04320.61
5.6.90.0070.03320.64
5.6.80.0130.06720.03
5.6.70.0000.07319.98
5.6.60.0070.07019.94
5.6.50.0070.08320.02
5.6.40.0100.06019.91
5.6.30.0100.06320.06
5.6.20.0070.07720.00
5.6.10.0000.05019.91
5.6.00.0000.05019.82
5.5.380.0100.03017.70
5.5.370.0070.03017.56
5.5.360.0030.04017.69
5.5.350.0100.06717.77
5.5.340.0100.04017.93
5.5.330.0030.03717.83
5.5.320.0130.04318.23
5.5.310.0070.03718.23
5.5.300.0030.04717.91
5.5.290.0030.07018.25
5.5.280.0000.04317.96
5.5.270.0070.03718.08
5.5.260.0030.04317.92
5.5.250.0070.03317.89
5.5.240.0030.03317.53
5.5.230.0030.03317.50
5.5.220.0100.04317.47
5.5.210.0070.05017.34
5.5.200.0100.06717.43
5.5.190.0030.09317.27
5.5.180.0070.07717.43
5.5.160.0070.03317.58
5.5.150.0070.07317.48
5.5.140.0070.06317.57
5.5.130.0130.03317.57
5.5.120.0170.07017.28
5.5.110.0000.06717.44
5.5.100.0000.04317.48
5.5.90.0030.06717.34
5.5.80.0100.06317.17
5.5.70.0030.03717.16
5.5.60.0130.04317.50
5.5.50.0070.03717.17
5.5.40.0100.06717.13
5.5.30.0070.03717.16
5.5.20.0000.07017.34
5.5.10.0070.07017.06
5.5.00.0030.06317.28
5.4.450.0070.06019.27
5.4.440.0100.03319.56
5.4.430.0100.04019.41
5.4.420.0000.05319.32
5.4.410.0100.06019.42
5.4.400.0130.05719.14
5.4.390.0100.03319.02
5.4.380.0030.07319.18
5.4.370.0100.06019.24
5.4.360.0070.06719.01
5.4.350.0000.07719.23
5.4.340.0100.05019.01
5.4.320.0070.06719.02
5.4.310.0070.03019.09
5.4.300.0000.05719.03
5.4.290.0100.07319.02
5.4.280.0030.05719.00
5.4.270.0030.07318.98
5.4.260.0070.03318.99
5.4.250.0070.03718.98
5.4.240.0000.04718.98
5.4.230.0030.03319.01
5.4.220.0100.03719.00
5.4.210.0030.07319.13
5.4.200.0030.06719.18
5.4.190.0030.06718.96
5.4.180.0030.06019.02
5.4.170.0170.04019.07
5.4.160.0070.06019.16
5.4.150.0030.04719.07
5.4.140.0030.05716.54
5.4.130.0070.06716.52
5.4.120.0070.05016.29
5.4.110.0030.07016.41
5.4.100.0000.03716.55
5.4.90.0030.06016.41
5.4.80.0000.06316.42
5.4.70.0070.04316.55
5.4.60.0100.02716.44
5.4.50.0070.05316.45
5.4.40.0030.06016.28
5.4.30.0070.04716.54
5.4.20.0000.03316.44
5.4.10.0070.05016.63
5.4.00.0070.06316.00
5.3.290.0100.04014.68
5.3.280.0000.04014.59
5.3.270.0100.07314.64
5.3.260.0030.07714.62
5.3.250.0030.03714.75
5.3.240.0030.05714.64
5.3.230.0100.03714.61
5.3.220.0070.06714.79
5.3.210.0000.04314.71
5.3.200.0030.05314.56
5.3.190.0030.07714.58
5.3.180.0130.06714.54
5.3.170.0070.06014.60
5.3.160.0030.04014.57
5.3.150.0030.03714.53
5.3.140.0030.04314.41
5.3.130.0030.03714.41
5.3.120.0030.04714.68
5.3.110.0070.03714.64
5.3.100.0070.05714.17
5.3.90.0000.04314.04
5.3.80.0070.06714.01
5.3.70.0030.04713.87
5.3.60.0000.07714.02
5.3.50.0130.05013.95
5.3.40.0070.07313.98
5.3.30.0000.05313.91
5.3.20.0000.04313.72
5.3.10.0070.07313.80
5.3.00.0030.06313.66
5.2.170.0070.05012.44
5.2.160.0030.05712.44
5.2.150.0000.04712.44
5.2.140.0000.05012.44
5.2.130.0070.05712.44
5.2.120.0000.04312.44
5.2.110.0100.05012.44
5.2.100.0030.05312.44
5.2.90.0070.02712.44
5.2.80.0000.04012.44
5.2.70.0030.03012.44
5.2.60.0030.06012.44
5.2.50.0030.04012.44
5.2.40.0000.03312.44
5.2.30.0030.03012.44
5.2.20.0000.05312.44
5.2.10.0030.06712.44
5.2.00.0000.02712.44
5.1.60.0070.05312.44
5.1.50.0030.05712.44
5.1.40.0100.06012.44
5.1.30.0000.02312.44
5.1.20.0030.04312.44
5.1.10.0070.03012.44
5.1.00.0070.03012.44
5.0.50.0000.02312.44
5.0.40.0000.05012.44
5.0.30.0030.04012.44
5.0.20.0030.02312.44
5.0.10.0070.01312.44
5.0.00.0000.03312.44
4.4.90.0000.02312.44
4.4.80.0030.03012.44
4.4.70.0000.03712.44
4.4.60.0030.03312.44
4.4.50.0030.03312.44
4.4.40.0000.02312.44
4.4.30.0030.02012.44
4.4.20.0030.01012.44
4.4.10.0000.01712.44
4.4.00.0000.02712.44
4.3.110.0030.03012.44
4.3.100.0000.02012.44
4.3.90.0030.02012.44
4.3.80.0000.03312.44
4.3.70.0000.01712.44
4.3.60.0000.01312.44
4.3.50.0030.02012.44
4.3.40.0070.04312.44
4.3.30.0000.01712.44
4.3.20.0000.03312.44
4.3.10.0030.04012.44
4.3.00.0030.02712.44

preferences:
52.32 ms | 401 KiB | 5 Q