3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo 'count(false): ',count(false),"\n"; echo 'count(0): ',count(0),"\n"; echo 'count(array(false)): ',count(array(false)),"\n"; echo 'count(array(0)): ',count(array(0)),"\n"; echo 'count(null): ',count(null),"\n"; echo 'count(array()): ',count(array()),"\n"; class Test {} $t = new Test(); echo 'count($t): ', count($t), "\n"; // not empty; see below: $emptyit = new EmptyIterator; echo 'count($emptyit): ', count($emptyit), "\n"; // obj w/no properties not empty PHP5+ echo '$emptyit->count(): ', $emptyit->count(), "\n"; echo 'empty(null):', empty(null), "\n"; echo 'empty(array():',empty(array()),"\n"; // obj w/no properties not empty PHP5+ echo 'empty($t):',empty($t),"\n";

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)
8.3.60.0150.00016.61
8.3.50.0120.01021.97
8.3.40.0220.00318.78
8.3.30.0100.00718.90
8.3.20.0070.01020.35
8.3.10.0040.00423.66
8.3.00.0060.00319.38
8.2.180.0040.01118.16
8.2.170.0070.00722.96
8.2.160.0070.00720.27
8.2.150.0040.00424.18
8.2.140.0110.00424.66
8.2.130.0110.00426.16
8.2.120.0000.00722.08
8.2.110.0060.00322.09
8.2.100.0080.00417.91
8.2.90.0040.00419.41
8.2.80.0080.00018.05
8.2.70.0090.00017.63
8.2.60.0000.00818.04
8.2.50.0040.00418.07
8.2.40.0040.00418.16
8.2.30.0040.00417.93
8.2.20.0000.00917.73
8.2.10.0070.00018.07
8.2.00.0000.01017.55
8.1.280.0040.01125.92
8.1.270.0040.00422.01
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0050.00523.84
8.1.230.0120.00019.00
8.1.220.0050.00317.74
8.1.210.0050.00318.77
8.1.200.0030.01017.10
8.1.190.0040.00417.40
8.1.180.0040.00418.10
8.1.170.0080.00018.48
8.1.160.0070.00021.88
8.1.150.0000.00818.51
8.1.140.0070.00017.24
8.1.130.0000.00717.81
8.1.120.0070.00317.28
8.1.110.0070.00017.38
8.1.100.0070.00017.21
8.1.90.0040.00417.32
8.1.80.0050.00317.25
8.1.70.0050.00317.27
8.1.60.0000.00717.36
8.1.50.0030.00517.38
8.1.40.0000.00817.52
8.1.30.0000.00717.49
8.1.20.0000.00817.61
8.1.10.0040.00417.42
8.1.00.0040.00417.47
8.0.300.0040.00418.77
8.0.290.0090.00017.05
8.0.280.0000.00718.36
8.0.270.0040.00417.21
8.0.260.0030.00317.14
8.0.250.0000.00716.89
8.0.240.0070.00316.89
8.0.230.0030.00316.85
8.0.220.0000.00716.76
8.0.210.0070.00016.80
8.0.200.0000.00716.87
8.0.190.0070.00016.91
8.0.180.0040.00416.81
8.0.170.0000.00816.96
8.0.160.0040.00316.86
8.0.150.0040.00416.77
8.0.140.0070.00016.74
8.0.130.0070.00013.32
8.0.120.0030.00516.91
8.0.110.0000.00816.91
8.0.100.0000.00716.89
8.0.90.0040.00416.90
8.0.80.0070.01316.91
8.0.70.0040.00416.70
8.0.60.0040.00416.81
8.0.50.0040.00416.92
8.0.30.0060.01317.01
8.0.20.0100.01017.40
8.0.10.0050.00316.79
8.0.00.0070.01016.77
7.4.330.0000.00515.14
7.4.320.0070.00016.61
7.4.300.0040.00416.49
7.4.290.0000.00716.41
7.4.280.0000.00716.45
7.4.270.0000.00716.52
7.4.260.0040.00316.58
7.4.250.0000.00716.42
7.4.240.0030.00316.57
7.4.230.0070.00016.36
7.4.220.0090.01316.61
7.4.210.0050.01016.61
7.4.200.0070.00016.68
7.4.190.0070.00016.73
7.4.160.0100.00716.59
7.4.150.0070.01717.40
7.4.140.0100.00817.86
7.4.130.0060.01416.59
7.4.120.0090.00816.62
7.4.110.0110.01116.62
7.4.100.0070.01116.48
7.4.90.0070.01016.60
7.4.80.0120.00619.39
7.4.70.0100.00616.35
7.4.60.0120.00316.63
7.4.50.0060.00316.54
7.4.40.0060.01022.77
7.4.30.0090.00616.79
7.4.00.0030.01115.15
7.3.330.0020.00213.32
7.3.320.0000.00513.32
7.3.310.0050.00316.33
7.3.300.0000.00716.23
7.3.290.0030.01416.38
7.3.280.0080.00916.39
7.3.270.0090.01117.40
7.3.260.0070.01016.67
7.3.250.0100.01116.39
7.3.240.0090.00916.43
7.3.230.0040.01316.39
7.3.210.0060.01216.30
7.3.200.0060.01119.39
7.3.190.0040.01416.46
7.3.180.0110.00416.39
7.3.170.0110.00616.53
7.3.160.0070.01516.39
7.3.120.0030.00915.02
7.2.330.0120.00616.80
7.2.320.0120.00416.52
7.2.310.0070.01016.78
7.2.300.0030.01416.85
7.2.290.0040.01316.95
7.2.60.0090.00616.93
7.2.00.0090.00319.31
7.1.200.0030.01015.77
7.1.70.0030.01317.30
7.1.60.0030.01017.32
7.1.50.0090.01634.50
7.1.00.0070.07722.36
7.0.200.0030.01316.79
7.0.140.0030.07322.15
7.0.60.0070.06719.94
7.0.50.0100.07717.89
7.0.40.0030.09020.30
7.0.30.0470.04020.13
7.0.20.0370.02320.22
7.0.10.0100.05720.16
7.0.00.0030.06020.32
5.6.280.0070.07020.77
5.6.210.0070.07720.64
5.6.200.0030.08718.27
5.6.190.0070.04020.33
5.6.180.0230.03720.41
5.6.170.0470.08320.45
5.6.160.0000.04320.47
5.6.150.0000.04718.15
5.6.140.0030.03718.23
5.6.130.0100.03718.19
5.6.120.0000.09020.98
5.6.110.0070.08020.97
5.6.100.0130.08020.98
5.6.90.0170.07321.00
5.6.80.0130.06720.51
5.5.350.0030.08020.31
5.5.340.0200.05717.97
5.5.330.0030.05720.29
5.5.320.0030.06720.24
5.5.310.0170.04020.26
5.5.300.0100.08317.95
5.5.290.0100.08018.08
5.5.280.0070.04020.96
5.5.270.0000.06020.84
5.5.260.0100.08020.77
5.5.250.0030.05320.70
5.5.240.4070.04320.07
5.4.450.0400.05719.61
5.4.440.0800.06019.61
5.4.430.0770.06019.60
5.4.420.0570.05719.60
5.4.410.0000.06319.50
5.4.400.0070.05719.25
5.4.390.0700.05718.84
5.4.380.0330.05318.75
5.4.370.0270.05018.70
5.4.360.0400.05718.75
5.4.350.0200.06318.59
5.4.340.0330.06718.53
5.4.320.0060.03912.51
5.4.310.0050.04512.50
5.4.300.0050.03812.52
5.4.290.0050.04112.51
5.4.280.0070.03412.38
5.4.270.0060.03812.38
5.4.260.0080.04012.38
5.4.250.0100.05212.38
5.4.240.0080.03812.38
5.4.230.0050.04012.37
5.4.220.0090.03512.37
5.4.210.0080.03412.37
5.4.200.0060.03912.37
5.4.190.0100.03412.37
5.4.180.0060.03912.37
5.4.170.0110.03612.38
5.4.160.0100.03712.37
5.4.150.0080.04712.37
5.4.140.0130.04412.05
5.4.130.0090.04012.04
5.4.120.0070.03612.00
5.4.110.0080.03512.00
5.4.100.0050.03812.00
5.4.90.0110.03712.00
5.4.80.0060.03912.00
5.4.70.0130.03612.00
5.4.60.0070.03712.00
5.4.50.0070.03512.00
5.4.40.0080.04311.98
5.4.30.0030.03911.98
5.4.20.0080.04111.97
5.4.10.0120.04611.98
5.4.00.0120.04611.47
5.3.290.0050.04612.80
5.3.280.0130.04412.71
5.3.270.0080.05112.73
5.3.260.0080.05212.72
5.3.250.0100.04412.72
5.3.240.0080.05012.72
5.3.230.0090.04812.71
5.3.220.0080.04212.68
5.3.210.0100.03712.68
5.3.200.0070.03812.68
5.3.190.0130.03612.68
5.3.180.0060.03912.68
5.3.170.0030.04012.67
5.3.160.0080.03812.67
5.3.150.0080.03612.67
5.3.140.0070.04412.66
5.3.130.0070.03912.66
5.3.120.0070.03912.66
5.3.110.0070.03912.66
5.3.100.0070.04312.12
5.3.90.0090.04112.08
5.3.80.0100.03412.07
5.3.70.0090.03312.07
5.3.60.0070.03712.07
5.3.50.0110.03512.00
5.3.40.0080.03912.00
5.3.30.0040.03911.96
5.3.20.0100.03611.74
5.3.10.0080.04611.70
5.3.00.0060.04211.69
5.2.170.0070.0349.19
5.2.160.0080.0289.18
5.2.150.0060.0429.18
5.2.140.0080.0399.18
5.2.130.0090.0399.14
5.2.120.0090.0299.14
5.2.110.0040.0419.15
5.2.100.0080.0339.15
5.2.90.0040.0329.15
5.2.80.0060.0339.14
5.2.70.0080.0389.14
5.2.60.0100.0339.09
5.2.50.0030.0369.06
5.2.40.0050.0319.04
5.2.30.0050.0349.02
5.2.20.0100.0289.00
5.2.10.0070.0278.92
5.2.00.0050.0328.79
5.1.60.0040.0268.07
5.1.50.0020.0298.07
5.1.40.0080.0338.05
5.1.30.0110.0368.39
5.1.20.0050.0368.42
5.1.10.0120.0418.14
5.1.00.0050.0308.14
5.0.50.0090.0226.63
5.0.40.0020.0286.49
5.0.30.0080.0406.30
5.0.20.0080.0306.27
5.0.10.0100.0386.25
5.0.00.0070.0556.23
4.4.90.0070.0224.78
4.4.80.0080.0184.75
4.4.70.0040.0204.76
4.4.60.0030.0214.76
4.4.50.0040.0204.77
4.4.40.0050.0274.71
4.4.30.0060.0174.76
4.4.20.0040.0154.84
4.4.10.0040.0154.85
4.4.00.0030.0274.75
4.3.110.0080.0234.67
4.3.100.0050.0194.66
4.3.90.0050.0194.63
4.3.80.0030.0254.58
4.3.70.0030.0154.63
4.3.60.0040.0144.63
4.3.50.0010.0184.63
4.3.40.0030.0244.54
4.3.30.0040.0193.30
4.3.20.0030.0153.29
4.3.10.0040.0143.24
4.3.00.0070.0308.79

preferences:
38.82 ms | 401 KiB | 5 Q