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"; $emptyit = new EmptyIterator; echo 'count($emptyit): ', count($emptyit), "\n"; echo 'empty(null):', empty(null), "\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)
8.3.60.0070.01016.63
8.3.50.0080.01022.07
8.3.40.0210.00018.67
8.3.30.0100.00319.08
8.3.20.0100.00320.13
8.3.10.0070.00023.53
8.3.00.0090.00317.59
8.2.180.0030.01616.38
8.2.170.0040.01122.96
8.2.160.0110.00420.40
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0030.01326.16
8.2.120.0040.00422.11
8.2.110.0090.00022.06
8.2.100.0090.00317.84
8.2.90.0050.00319.23
8.2.80.0040.00417.97
8.2.70.0050.00317.50
8.2.60.0080.00017.80
8.2.50.0040.00418.07
8.2.40.0000.00818.00
8.2.30.0030.00617.90
8.2.20.0060.00317.61
8.2.10.0000.00717.91
8.2.00.0000.01017.55
8.1.280.0070.01125.92
8.1.270.0090.00021.82
8.1.260.0050.00326.35
8.1.250.0080.00028.09
8.1.240.0060.00323.86
8.1.230.0090.00519.00
8.1.220.0000.00917.74
8.1.210.0050.00318.77
8.1.200.0000.01017.13
8.1.190.0060.00317.41
8.1.180.0000.00818.10
8.1.170.0030.00618.47
8.1.160.0030.00321.99
8.1.150.0060.00318.55
8.1.140.0040.00417.32
8.1.130.0030.00317.69
8.1.120.0040.00717.38
8.1.110.0040.00417.34
8.1.100.0040.00417.25
8.1.90.0040.00417.32
8.1.80.0000.00717.32
8.1.70.0070.00017.30
8.1.60.0000.00817.37
8.1.50.0050.00317.44
8.1.40.0030.00617.46
8.1.30.0040.00417.44
8.1.20.0000.00717.59
8.1.10.0020.00517.49
8.1.00.0000.00817.44
8.0.300.0070.00018.77
8.0.290.0040.00417.18
8.0.280.0000.00718.44
8.0.270.0000.00717.17
8.0.260.0000.00617.23
8.0.250.0000.00716.86
8.0.240.0070.00316.84
8.0.230.0030.00716.96
8.0.220.0070.00016.88
8.0.210.0000.00716.79
8.0.200.0040.00416.96
8.0.190.0000.00816.88
8.0.180.0050.00216.81
8.0.170.0080.00016.87
8.0.160.0080.00016.70
8.0.150.0070.00016.93
8.0.140.0070.00016.86
8.0.130.0000.00813.35
8.0.120.0000.00716.92
8.0.110.0040.00416.85
8.0.100.0040.00416.81
8.0.90.0040.00416.89
8.0.80.0140.00716.98
8.0.70.0070.00016.88
8.0.60.0040.00416.93
8.0.50.0020.00516.83
8.0.30.0080.00916.96
8.0.20.0110.00817.40
8.0.10.0000.00716.80
8.0.00.0120.00716.53
7.4.330.0000.00615.05
7.4.320.0040.00416.57
7.4.300.0080.00016.52
7.4.290.0000.00616.54
7.4.280.0000.00716.48
7.4.270.0040.00416.57
7.4.260.0000.00716.43
7.4.250.0050.00216.45
7.4.240.0020.00516.55
7.4.230.0000.00716.59
7.4.220.0110.01116.55
7.4.210.0060.00816.64
7.4.200.0040.00416.69
7.4.190.0040.00416.59
7.4.160.0070.01016.55
7.4.150.0090.01217.40
7.4.140.0100.00717.86
7.4.130.0120.00716.43
7.4.120.0110.00716.52
7.4.110.0120.00616.51
7.4.100.0090.01216.46
7.4.90.0150.00316.39
7.4.80.0160.00319.39
7.4.70.0030.01316.46
7.4.60.0040.01116.60
7.4.50.0030.00316.51
7.4.40.0070.01022.77
7.4.30.0080.00816.49
7.4.00.0160.00015.07
7.3.330.0000.00513.26
7.3.320.0050.00013.36
7.3.310.0040.00416.19
7.3.300.0000.00716.34
7.3.290.0040.01116.28
7.3.280.0120.00516.29
7.3.270.0110.00817.40
7.3.260.0100.01316.38
7.3.250.0060.01616.45
7.3.240.0030.01316.31
7.3.230.0030.01316.39
7.3.210.0110.00516.42
7.3.200.0150.00919.39
7.3.190.0090.01416.20
7.3.180.0060.01016.36
7.3.170.0110.00416.39
7.3.160.0160.00916.45
7.3.120.0070.01014.79
7.2.330.0090.00916.72
7.2.320.0120.00616.51
7.2.310.0100.00716.66
7.2.300.0030.01416.61
7.2.290.0120.00616.59
7.2.60.0040.01117.00
7.2.00.0030.01319.18
7.1.200.0180.00015.59
7.1.100.0070.01017.72
7.1.70.0040.01216.89
7.1.60.0030.01219.33
7.1.50.0030.01316.87
7.1.00.0000.08022.36
7.0.200.0580.00314.63
7.0.140.0000.07722.12
7.0.60.0030.08019.83
7.0.50.0100.08017.87
7.0.40.0030.09020.20
7.0.30.0330.07720.11
7.0.20.0200.05320.24
7.0.10.0100.06320.07
7.0.00.0070.09320.19
5.6.210.0100.07020.46
5.6.200.0200.06718.23
5.6.190.0070.08720.47
5.6.180.0300.04320.48
5.6.170.0200.06720.71
5.6.160.0170.07320.50
5.6.150.0070.08318.25
5.6.140.0170.04018.27
5.6.130.0000.04318.16
5.6.120.0030.08721.14
5.6.110.0130.08020.99
5.6.100.0100.08020.99
5.6.90.0030.07720.97
5.6.80.0030.07020.41
5.6.70.3870.03720.39
5.5.350.0130.03020.49
5.5.340.0100.07317.95
5.5.330.0070.08320.47
5.5.320.0570.06720.34
5.5.310.0230.06020.34
5.5.300.0030.09017.99
5.5.290.0030.04017.97
5.5.280.0070.09020.89
5.5.270.0070.08320.78
5.5.260.0000.08020.79
5.5.250.0070.08020.68
5.5.240.0130.08020.15
5.4.450.0130.06019.16
5.4.440.0170.06019.62
5.4.430.0230.05719.62
5.4.420.0430.05719.55
5.4.410.0300.05319.17
5.4.400.0230.05019.29
5.4.390.0130.06318.86
5.4.380.0400.05718.73
5.4.370.0330.07718.70
5.4.360.0470.04718.62
5.4.350.0300.06318.62
5.4.340.0300.05318.74
5.4.320.0040.03712.51
5.4.310.0040.03912.51
5.4.300.0060.03912.51
5.4.290.0050.04012.51
5.4.280.0110.03212.38
5.4.270.0080.03712.38
5.4.260.0060.03912.38
5.4.250.0090.03812.38
5.4.240.0090.03612.38
5.4.230.0060.04712.37
5.4.220.0110.04512.37
5.4.210.0130.04512.37
5.4.200.0040.04212.37
5.4.190.0050.04912.36
5.4.180.0060.03812.37
5.4.170.0070.04112.38
5.4.160.0070.04912.37
5.4.150.0090.04512.37
5.4.140.0110.04112.05
5.4.130.0070.03612.04
5.4.120.0030.04512.00
5.4.110.0100.03512.00
5.4.100.0130.03412.00
5.4.90.0170.05412.00
5.4.80.0090.05712.00
5.4.70.0120.07611.99
5.4.60.0160.11712.00
5.4.50.0190.04812.00
5.4.40.0100.05511.99
5.4.30.0100.05211.98
5.4.20.0100.05311.98
5.4.10.0130.06511.98
5.4.00.0140.10011.47
5.3.290.0060.03812.80
5.3.280.0140.05312.70
5.3.270.0070.05512.72
5.3.260.0110.05012.72
5.3.250.0120.04412.72
5.3.240.0120.03612.72
5.3.230.0090.03912.71
5.3.220.0030.04412.68
5.3.210.0040.04412.68
5.3.200.0100.03512.68
5.3.190.0120.04712.68
5.3.180.0110.04712.67
5.3.170.0110.03712.67
5.3.160.0150.07112.67
5.3.150.0070.04912.67
5.3.140.0070.04212.66
5.3.130.0080.04812.66
5.3.120.0180.05812.66
5.3.110.0190.05512.66
5.3.100.0100.04012.12
5.3.90.0080.03712.09
5.3.80.0150.04412.07
5.3.70.0140.04512.08
5.3.60.0070.03812.06
5.3.50.0130.03312.00
5.3.40.0180.03812.00
5.3.30.0110.05711.95
5.3.20.0100.03611.73
5.3.10.0080.03711.70
5.3.00.0070.04211.69
5.2.170.0080.0349.18
5.2.160.0070.0339.19
5.2.150.0080.0319.19
5.2.140.0100.0499.18
5.2.130.0050.0339.14
5.2.120.0070.0329.14
5.2.110.0060.0319.15
5.2.100.0070.0329.14
5.2.90.0100.0729.14
5.2.80.0070.0329.14
5.2.70.0050.0359.14
5.2.60.0070.0409.09
5.2.50.0060.0499.06
5.2.40.0050.0329.04
5.2.30.0090.0309.01
5.2.20.0220.0889.00
5.2.10.0080.0298.92
5.2.00.0040.0358.78
5.1.60.0060.0278.07
5.1.50.0050.0278.07
5.1.40.0040.0288.05
5.1.30.0200.0648.39
5.1.20.0100.0548.42
5.1.10.0030.0358.14
5.1.00.0080.0518.14
5.0.50.0020.0286.63
5.0.40.0060.0246.48
5.0.30.0080.0576.30
5.0.20.0030.0256.27
5.0.10.0090.0526.25
5.0.00.0040.0396.23
4.4.90.0020.0224.77
4.4.80.0060.0184.75
4.4.70.0050.0194.75
4.4.60.0070.0274.75
4.4.50.0030.0214.77
4.4.40.0030.0324.71
4.4.30.0020.0194.76
4.4.20.0040.0174.84
4.4.10.0030.0204.85
4.4.00.0040.0324.76
4.3.110.0030.0194.67
4.3.100.0090.0314.66
4.3.90.0040.0194.63
4.3.80.0030.0314.58
4.3.70.0040.0384.63
4.3.60.0050.0184.63
4.3.50.0050.0204.63
4.3.40.0060.0294.54
4.3.30.0030.0233.29
4.3.20.0070.0203.28
4.3.10.0030.0223.23
4.3.00.0000.0237.81

preferences:
38.88 ms | 401 KiB | 5 Q