3v4l.org

run code in 300+ PHP versions simultaneously
<?php $nullvar = null; $nullstr = ''; $notnull = 'foo'; $unset = 'something'; unset($unset); $results = array( '<h1>Results</h1>' , '<br/>$nullvar = ' , var_dump(isset($nullvar)) , '<br/> $nullstr = ' , var_dump(isset($nullstr)) , '<br/>$notnull = ' , var_dump(isset($notnull)) , '<br/>$unset = ' , var_dump(isset($unset)) ); echo impode(' ',$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)
8.3.40.0060.00918.70
8.3.30.0120.00918.67
8.3.20.0080.00018.77
8.3.10.0040.00421.21
8.3.00.0040.00421.79
8.2.170.0110.01122.96
8.2.160.0060.00620.35
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0070.00317.68
8.2.110.0040.00720.33
8.2.100.0040.00817.91
8.2.90.0040.00419.09
8.2.80.0000.00818.04
8.2.70.0080.00317.47
8.2.60.0050.00317.80
8.2.50.0040.00418.07
8.2.40.0040.00417.92
8.2.30.0060.00319.83
8.2.20.0040.00417.76
8.2.10.0040.00417.82
8.2.00.0070.00017.90
8.1.270.0070.00023.99
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0040.00422.33
8.1.230.0070.00420.95
8.1.220.0080.00018.77
8.1.210.0080.00018.77
8.1.200.0040.00417.25
8.1.190.0030.00517.29
8.1.180.0000.00818.10
8.1.170.0080.00018.71
8.1.160.0070.00018.91
8.1.150.0040.00418.55
8.1.140.0080.00017.36
8.1.130.0030.00317.73
8.1.120.0050.00217.37
8.1.110.0040.00417.45
8.1.100.0050.00317.44
8.1.90.0000.00817.35
8.1.80.0000.00817.46
8.1.70.0070.00017.39
8.1.60.0060.00317.63
8.1.50.0040.00417.49
8.1.40.0050.00317.52
8.1.30.0000.00817.54
8.1.20.0000.00817.69
8.1.10.0040.00417.58
8.1.00.0000.00817.53
8.0.300.0080.00019.77
8.0.290.0000.00717.18
8.0.280.0030.00318.43
8.0.270.0040.00317.25
8.0.260.0000.00716.80
8.0.250.0040.00416.96
8.0.240.0030.00717.01
8.0.230.0000.00817.02
8.0.220.0000.00716.84
8.0.210.0060.00316.84
8.0.200.0000.00717.01
8.0.190.0050.00316.93
8.0.180.0100.00016.87
8.0.170.0040.00417.00
8.0.160.0050.00317.00
8.0.150.0000.00916.95
8.0.140.0070.00016.80
8.0.130.0060.00013.45
8.0.120.0000.00716.93
8.0.110.0040.00416.99
8.0.100.0080.00016.95
8.0.90.0070.00016.96
8.0.80.0110.00717.00
8.0.70.0000.00716.83
8.0.60.0000.00717.07
8.0.50.0040.00416.94
8.0.30.0090.01117.24
8.0.20.0080.00917.40
8.0.10.0000.00716.96
8.0.00.0090.00916.90
7.4.330.0030.00314.83
7.4.320.0040.00416.61
7.4.300.0030.00316.45
7.4.290.0030.00316.60
7.4.280.0030.00316.48
7.4.270.0000.00716.61
7.4.260.0000.00513.23
7.4.250.0000.00816.48
7.4.240.0030.00316.50
7.4.230.0070.00016.70
7.4.220.0130.00316.57
7.4.210.0070.00816.63
7.4.200.0000.00716.35
7.4.190.0050.00316.42
7.4.160.0130.00316.47
7.4.150.0140.00717.40
7.4.140.0140.00817.86
7.4.130.0050.01316.59
7.4.120.0120.00616.55
7.4.110.0090.00816.65
7.4.100.0060.01216.59
7.4.90.0060.01216.50
7.4.80.0180.00419.37
7.4.70.0060.00916.56
7.4.60.0080.01116.55
7.4.50.0060.00316.50
7.4.40.0120.00322.52
7.4.30.0110.00516.49
7.4.00.0060.00614.80
7.3.330.0020.00213.14
7.3.320.0060.00013.17
7.3.310.0070.00016.20
7.3.300.0000.00716.25
7.3.290.0150.00416.38
7.3.280.0130.00716.27
7.3.270.0080.00817.40
7.3.260.0110.01118.24
7.3.250.0060.01116.46
7.3.240.0120.00616.46
7.3.230.0100.00716.39
7.3.210.0090.00916.51
7.3.200.0110.01019.39
7.3.190.0090.00916.45
7.3.180.0100.00716.40
7.3.170.0070.01116.30
7.3.160.0080.00816.34
7.3.120.0040.01214.94
7.2.330.0100.00716.54
7.2.320.0060.01316.71
7.2.310.0060.00916.62
7.2.300.0030.01416.51
7.2.290.0070.01016.55
7.2.60.0000.00916.86
7.2.00.0120.00619.29
7.1.200.0080.00415.41
7.1.100.0070.00718.21
7.1.70.0000.00716.78
7.1.60.0090.00919.40
7.1.50.0140.00716.69
7.1.00.0000.05722.54
7.0.200.0000.00816.91
7.0.140.0030.07321.95
7.0.90.0400.08719.85
7.0.80.0530.08319.92
7.0.70.0600.07319.99
7.0.60.0600.07020.06
7.0.50.0470.05320.28
7.0.40.0130.07320.02
7.0.30.0000.08320.00
7.0.20.0100.06319.99
7.0.10.0030.05020.04
7.0.00.0170.07720.09
5.6.280.0030.07320.98
5.6.230.0030.07720.52
5.6.220.0070.04020.70
5.6.210.0100.06720.74
5.6.200.0070.06721.02
5.6.190.0070.08021.03
5.6.180.0070.08021.10
5.6.170.0100.04721.14
5.6.160.0130.07721.06
5.6.150.0100.07021.09
5.6.140.0200.07021.10
5.6.130.0070.08321.00
5.6.120.0130.07321.00
5.6.110.0070.04720.98
5.6.100.0030.08721.00
5.6.90.0030.04321.06
5.6.80.0000.04720.31
5.6.70.0130.03020.41
5.6.60.0000.04320.43
5.6.50.0000.04320.43
5.6.40.0070.07020.41
5.6.30.0000.04020.29
5.6.20.0000.04720.48
5.6.10.0000.04320.53
5.6.00.0070.05320.41
5.5.370.0130.07020.42
5.5.360.0030.07320.35
5.5.350.0030.07720.44
5.5.340.0070.04320.73
5.5.330.0030.05020.81
5.5.320.0130.04720.87
5.5.310.0030.06020.87
5.5.300.0130.07720.87
5.5.290.0100.07720.88
5.5.280.0030.06320.77
5.5.270.0030.08320.79
5.5.260.0030.09320.63
5.5.250.0070.04020.58
5.5.240.0100.03720.18
5.5.230.0070.05020.02
5.5.220.0000.05020.14
5.5.210.0030.03720.24
5.5.200.0030.03720.24
5.5.190.0030.04020.28
5.5.180.0030.04020.15
5.5.160.0100.03320.06
5.5.150.0030.06720.22
5.5.140.0070.03320.21
5.5.130.0030.04020.11
5.5.120.0030.05020.13
5.5.110.0100.03320.27
5.5.100.0000.04320.04
5.5.90.0030.03720.15
5.5.80.0070.03020.11
5.5.70.0000.04019.96
5.5.60.0070.03320.14
5.5.50.0100.03320.08
5.5.40.0130.02720.05
5.5.30.0070.03720.02
5.5.20.0070.03019.95
5.5.10.0070.04020.03
5.5.00.0030.04319.96
5.4.450.0030.06019.27
5.4.440.0100.03719.29
5.4.430.0070.07719.39
5.4.420.0030.08319.35
5.4.410.0070.04719.24
5.4.400.0070.04319.13
5.4.390.0000.04319.07
5.4.380.0070.03319.10
5.4.370.0000.04319.24
5.4.360.0000.03718.95
5.4.350.0030.03718.95
5.4.340.0030.03718.81
5.4.320.0030.08018.79
5.4.310.0030.04019.23
5.4.300.0000.03719.02
5.4.290.0100.02718.94
5.4.280.0030.03319.11
5.4.270.0030.04719.05
5.4.260.0070.03319.14
5.4.250.0070.03319.05
5.4.240.0030.03719.12
5.4.230.0000.04019.24
5.4.220.0030.04318.80
5.4.210.0000.04019.22
5.4.200.0030.08319.11
5.4.190.0130.02719.02
5.4.180.0100.02318.97
5.4.170.0070.04719.11
5.4.160.0000.04019.02
5.4.150.0070.03719.12
5.4.140.0070.03316.33
5.4.130.0000.04016.32
5.4.120.0000.04316.35
5.4.110.0030.03016.40
5.4.100.0030.03716.34
5.4.90.0100.06016.42
5.4.80.0000.03716.31
5.4.70.0000.04716.24
5.4.60.0030.04316.26
5.4.50.0070.04716.40
5.4.40.0030.07316.25
5.4.30.0070.05316.40
5.4.20.0100.05016.31
5.4.10.0130.06716.18
5.4.00.0170.06715.73
5.3.290.0030.03714.57
5.3.280.0070.03314.45
5.3.270.0070.04014.59
5.3.260.0000.04014.46
5.3.250.0030.03014.46
5.3.240.0030.03314.42
5.3.230.0000.07314.46
5.3.220.0030.03014.42
5.3.210.0070.02714.52
5.3.200.0030.03314.50
5.3.190.0030.03714.55
5.3.180.0070.03714.56
5.3.170.0000.04314.55
5.3.160.0070.08014.55
5.3.150.0070.07314.40
5.3.140.0130.05714.51
5.3.130.0030.05714.48
5.3.120.0170.06714.52
5.3.110.0030.05014.40
5.3.100.0170.05313.86
5.3.90.0030.05713.88
5.3.80.0100.07713.79
5.3.70.0130.07014.00
5.3.60.0370.04713.96
5.3.50.0000.08713.93
5.3.40.0100.03713.91
5.3.30.0070.07313.88
5.3.20.0000.07713.57
5.3.10.0070.07313.64
5.3.00.0070.08013.63
5.2.170.0070.06013.57
5.2.160.0070.06013.57
5.2.150.0030.04013.57
5.2.140.0100.04313.57
5.2.130.0070.05713.57
5.2.120.0100.04313.57
5.2.110.0100.05713.57
5.2.100.0030.06713.57
5.2.90.0030.06713.57
5.2.80.0070.05713.57
5.2.70.0030.06313.57
5.2.60.0030.06013.57
5.2.50.0100.05013.57
5.2.40.0100.05013.57
5.2.30.0030.04713.57
5.2.20.0070.05013.57
5.2.10.0070.05713.57
5.2.00.0070.06013.57
5.1.60.0000.04313.57
5.1.50.0100.04713.57
5.1.40.0030.05313.57
5.1.30.0070.05013.57
5.1.20.0070.05013.57
5.1.10.0000.04013.57
5.1.00.0070.02313.57
5.0.50.0030.04013.57
5.0.40.0070.04313.57
5.0.30.0030.06313.57
5.0.20.0100.03313.57
5.0.10.0100.03313.57
5.0.00.0000.06713.57
4.4.90.0030.03313.57
4.4.80.0070.03313.57
4.4.70.0070.03313.57
4.4.60.0000.03713.57
4.4.50.0000.03713.57
4.4.40.0000.03313.57
4.4.30.0030.03313.57
4.4.20.0030.03313.57
4.4.10.0000.01713.57
4.4.00.0000.06013.57
4.3.110.0000.03313.57
4.3.100.0030.03313.57
4.3.90.0000.04013.57
4.3.80.0030.05013.57
4.3.70.0000.02713.57
4.3.60.0070.02713.57
4.3.50.0030.03313.57
4.3.40.0000.04013.57
4.3.30.0030.01313.57
4.3.20.0070.02713.57
4.3.10.0000.04013.57
4.3.00.0030.02313.57

preferences:
39.04 ms | 400 KiB | 5 Q