3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( '' => 'foo', 'foo' => '', null, array(), 1, true, false, ); $k = 'no'; $v = 'exist'; echo "$k => $v\n"; var_dump(!empty($a[$k])); var_dump(isset($a[$k]) && $a[$k]);

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)
8.3.40.0030.01318.78
8.3.30.0100.00319.08
8.3.20.0080.00020.38
8.3.10.0030.00621.85
8.3.00.0080.00017.75
8.2.170.0110.00422.96
8.2.160.0060.00920.35
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0000.00820.90
8.2.110.0060.01320.53
8.2.100.0000.01217.91
8.2.90.0070.00319.76
8.2.80.0080.00017.97
8.2.70.0040.00417.63
8.2.60.0040.00417.93
8.2.50.0060.00318.07
8.2.40.0070.00018.16
8.2.30.0000.00718.11
8.2.20.0000.00717.73
8.2.10.0040.00418.05
8.2.00.0000.00717.59
8.1.270.0030.00523.82
8.1.260.0000.00826.35
8.1.250.0080.00028.09
8.1.240.0000.00922.67
8.1.230.0070.00420.87
8.1.220.0030.00517.79
8.1.210.0000.00818.88
8.1.200.0090.00017.36
8.1.190.0080.00017.23
8.1.180.0060.00319.01
8.1.170.0000.00918.46
8.1.160.0030.00522.00
8.1.150.0040.00418.86
8.1.140.0000.00717.29
8.1.130.0040.00419.70
8.1.120.0000.00817.37
8.1.110.0040.00417.43
8.1.100.0000.00717.41
8.1.90.0040.00417.34
8.1.80.0000.00717.36
8.1.70.0040.00417.43
8.1.60.0040.00417.48
8.1.50.0000.00817.42
8.1.40.0000.00717.55
8.1.30.0030.00517.60
8.1.20.0030.00617.68
8.1.10.0000.00717.63
8.1.00.0000.00717.52
8.0.300.0000.00720.04
8.0.290.0000.00716.63
8.0.280.0030.00318.46
8.0.270.0030.00317.24
8.0.260.0000.00617.16
8.0.250.0000.00716.91
8.0.240.0000.00716.86
8.0.230.0070.00016.79
8.0.220.0030.00316.86
8.0.210.0000.00716.95
8.0.200.0030.00616.89
8.0.190.0030.00616.90
8.0.180.0000.00816.94
8.0.170.0000.00816.95
8.0.160.0000.00716.90
8.0.150.0060.00316.89
8.0.140.0070.00316.84
8.0.130.0030.00313.29
8.0.120.0040.00416.70
8.0.110.0080.00016.89
8.0.100.0040.00416.70
8.0.90.0000.00716.75
8.0.80.0060.00916.76
8.0.70.0040.00416.89
8.0.60.0050.00216.75
8.0.50.0070.00016.93
8.0.30.0100.01317.16
8.0.20.0110.00817.40
8.0.10.0040.00417.00
8.0.00.0070.01016.75
7.4.330.0000.00515.00
7.4.320.0000.00616.51
7.4.300.0030.00316.51
7.4.290.0070.00016.63
7.4.280.0000.00716.43
7.4.270.0000.00716.53
7.4.260.0030.00316.44
7.4.250.0040.00416.57
7.4.240.0020.00516.57
7.4.230.0030.00316.60
7.4.220.0060.01516.71
7.4.210.0070.00716.61
7.4.200.0050.00216.52
7.4.160.0050.01116.53
7.4.150.0120.00617.40
7.4.140.0080.01017.86
7.4.130.0060.00916.46
7.4.120.0020.01616.44
7.4.110.0040.01416.39
7.4.100.0040.01416.56
7.4.90.0070.01216.66
7.4.80.0040.01319.39
7.4.70.0180.01316.51
7.4.60.0090.00616.43
7.4.50.0030.00316.25
7.4.40.0090.01216.38
7.4.30.0090.00616.63
7.4.00.0030.01314.76
7.3.330.0000.00513.00
7.3.320.0050.00013.13
7.3.310.0030.00316.25
7.3.300.0030.00316.16
7.3.290.0070.01016.25
7.3.280.0120.00616.24
7.3.270.0090.00917.40
7.3.260.0110.00616.29
7.3.240.0110.00616.40
7.3.230.0080.01116.39
7.3.210.0100.00716.18
7.3.200.0150.00719.39
7.3.190.0090.00816.52
7.3.180.0030.01316.25
7.3.170.0060.00916.27
7.3.160.0060.00916.07
7.2.330.0120.01216.48
7.2.320.0130.00916.42
7.2.310.0080.00816.69
7.2.300.0100.00716.65
7.2.290.0060.00916.38
7.2.00.0030.00919.20
7.1.100.0000.01117.98
7.1.70.0060.00317.19
7.1.60.0100.01319.40
7.1.50.0130.01316.59
7.1.00.0030.07722.57
7.0.200.0000.00916.73
7.0.140.0000.07722.12
7.0.60.0170.06719.94
7.0.50.0070.03717.82
7.0.40.0070.04020.04
7.0.30.0230.08320.20
7.0.20.0330.07320.13
7.0.10.0070.04320.20
7.0.00.0100.05719.99
5.6.280.0000.07721.12
5.6.210.0170.07720.66
5.6.200.0100.03718.17
5.6.190.0100.08320.41
5.6.180.3200.04020.61
5.6.170.0300.03720.61
5.6.160.0070.08020.49
5.6.150.0000.06018.18
5.6.140.0030.04318.16
5.6.130.0030.05718.16
5.6.120.0030.07021.14
5.6.110.0030.09021.13
5.6.100.0030.05021.01
5.6.90.0030.05321.11
5.6.80.0070.07720.51
5.6.70.3870.04720.23
5.5.350.0200.08020.41
5.5.340.0070.07317.98
5.5.330.0000.05320.40
5.5.320.3000.03020.28
5.5.310.0230.05720.34
5.5.300.0100.07018.00
5.5.290.0070.08318.00
5.5.280.0100.03320.77
5.5.270.0200.07020.64
5.5.260.0070.06320.88
5.5.250.0200.06720.77
5.5.240.0200.05020.25
5.4.450.0500.06019.42
5.4.440.0430.07319.10
5.4.430.0470.05319.56
5.4.420.0430.07019.41
5.4.410.0430.05319.32
5.4.400.0470.04719.10
5.4.390.0470.06319.09
5.4.380.0430.04318.96
5.4.370.0430.06019.09
5.4.360.0470.06019.08
5.4.350.0330.06019.06
5.4.340.0400.03718.80
5.4.320.0430.04719.26
5.4.310.0500.04019.13
5.4.300.0430.07019.08
5.4.290.0470.06019.11
5.4.280.0470.06018.77
5.4.270.0370.03719.06
5.4.260.0400.05018.93
5.4.250.0370.06719.05
5.4.240.0500.06319.23
5.4.230.0430.03719.07
5.4.220.0470.06718.93
5.4.210.0470.06719.08
5.4.200.0500.05719.24
5.4.190.0500.04718.90
5.4.180.0430.06018.88
5.4.170.0430.03718.89
5.4.160.0330.05318.78
5.4.150.0470.06019.18
5.4.140.0300.05316.38
5.4.130.0430.05316.27
5.4.120.0370.04316.37
5.4.110.0500.03716.30
5.4.100.0400.04716.18
5.4.90.0300.04016.45
5.4.80.0370.06716.37
5.4.70.0500.06016.25
5.4.60.0400.06316.31
5.4.50.0430.02716.31
5.4.40.0330.03716.36
5.4.30.0470.06016.15
5.4.20.0330.04316.36
5.4.10.0430.06316.04
5.4.00.0530.05715.74
5.3.290.0400.07314.52
5.3.280.0500.04014.59
5.3.270.0400.07014.46
5.3.260.0330.05014.62
5.3.250.0400.03714.70
5.3.240.0500.05014.56
5.3.230.0400.03714.71
5.3.220.0230.04714.66
5.3.210.0300.04014.43
5.3.200.0330.03714.42
5.3.190.0270.04314.58
5.3.180.0330.03714.40
5.3.170.0400.03714.39
5.3.160.0300.04014.40
5.3.150.0400.04314.50
5.3.140.0400.03014.46
5.3.130.0330.03714.40
5.3.120.0430.03314.40
5.3.110.0270.04314.40
5.3.100.0370.03314.05
5.3.90.0370.03313.93
5.3.80.0330.03713.95
5.3.70.0370.03313.95
5.3.60.0370.03713.88
5.3.50.0370.04313.79
5.3.40.0370.04314.04
5.3.30.0400.02713.70
5.3.20.0300.05013.71
5.3.10.0470.02313.67
5.3.00.0270.04013.59
5.2.170.0300.02712.45
5.2.160.0300.04012.45
5.2.150.0330.02712.45
5.2.140.0330.02312.45
5.2.130.0370.02312.45
5.2.120.0270.03712.45
5.2.110.0330.02012.45
5.2.100.0270.03312.45
5.2.90.0300.02712.45
5.2.80.0300.03012.45
5.2.70.0230.03312.45
5.2.60.0270.03012.45
5.2.50.0300.03012.45
5.2.40.0230.02712.45
5.2.30.0200.03312.45
5.2.20.0400.02312.45
5.2.10.0230.02712.45
5.2.00.0230.02712.45
5.1.60.0270.02312.45
5.1.50.0230.02712.45
5.1.40.0270.02012.45
5.1.30.0230.02312.45
5.1.20.0200.02712.45
5.1.10.0270.02312.45
5.1.00.0170.03012.45
5.0.50.0100.02012.45
5.0.40.0100.02012.45
5.0.30.0130.02712.45
5.0.20.0070.02312.45
5.0.10.0070.02312.45
5.0.00.0130.02712.45
4.4.90.0100.01712.45
4.4.80.0100.01712.45
4.4.70.0070.02012.45
4.4.60.0100.01712.45
4.4.50.0070.02012.45
4.4.40.0130.02012.45
4.4.30.0100.01712.45
4.4.20.0100.01712.45
4.4.10.0100.01712.45
4.4.00.0100.02712.45
4.3.110.0130.01312.45
4.3.100.0070.01712.45
4.3.90.0100.01712.45
4.3.80.0130.02712.45
4.3.70.0100.01712.45
4.3.60.0100.01312.45
4.3.50.0100.01712.45
4.3.40.0130.02012.45
4.3.30.0070.01312.45
4.3.20.0030.01712.45
4.3.10.0070.01312.45
4.3.00.0030.01712.45

preferences:
37.13 ms | 400 KiB | 5 Q