3v4l.org

run code in 300+ PHP versions simultaneously
<?php class x extends IteratorIterator { public function __call($method, $args) { var_dump('__call():', $method); } } $inner = new ArrayIterator([1, 2]); $outer = new x($inner); var_dump(method_exists(get_class($outer), 'count')); var_dump(method_exists($outer, 'count')); var_dump($outer instanceof Countable); var_dump($outer->count()); var_dump($outer->count2());

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)
8.3.60.0110.00316.38
8.3.50.0080.00722.02
8.3.40.0150.00018.85
8.3.30.0110.00319.09
8.3.20.0000.00920.39
8.3.10.0080.00023.66
8.3.00.0000.00820.64
8.2.180.0040.01118.25
8.2.170.0110.00422.96
8.2.160.0090.00620.35
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0040.00420.66
8.2.110.0070.00322.29
8.2.100.0090.00317.59
8.2.90.0030.00619.23
8.2.80.0050.00317.97
8.2.70.0030.00617.63
8.2.60.0030.00517.79
8.2.50.0000.00818.07
8.2.40.0000.00821.11
8.2.30.0000.00718.08
8.2.20.0040.00417.68
8.2.10.0040.00418.02
8.2.00.0050.00317.62
8.1.280.0070.00725.92
8.1.270.0080.00023.97
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0030.00723.96
8.1.230.0110.00019.02
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0070.00317.23
8.1.190.0000.00817.22
8.1.180.0000.00818.10
8.1.170.0040.00418.55
8.1.160.0040.00422.02
8.1.150.0040.00418.56
8.1.140.0040.00417.45
8.1.130.0040.00417.88
8.1.120.0050.00317.41
8.1.110.0070.00017.39
8.1.100.0040.00417.42
8.1.90.0030.00717.32
8.1.80.0040.00417.38
8.1.70.0030.00317.38
8.1.60.0050.00317.59
8.1.50.0090.00017.54
8.1.40.0040.00417.43
8.1.30.0040.00417.60
8.1.20.0000.00817.68
8.1.10.0040.00417.60
8.1.00.0000.00817.46
8.0.300.0070.00018.77
8.0.290.0040.00417.04
8.0.280.0000.00718.32
8.0.270.0000.00717.21
8.0.260.0030.00517.23
8.0.250.0000.00716.82
8.0.240.0030.00316.91
8.0.230.0030.00316.81
8.0.220.0070.00016.79
8.0.210.0000.00716.73
8.0.200.0000.00616.90
8.0.190.0000.00716.97
8.0.180.0000.00716.78
8.0.170.0040.00416.94
8.0.160.0030.00316.73
8.0.150.0020.00516.89
8.0.140.0000.00716.70
8.0.130.0000.00613.29
8.0.120.0070.00016.72
8.0.110.0000.00716.79
8.0.100.0000.00716.87
8.0.90.0000.00816.88
8.0.80.0030.01216.89
8.0.70.0050.00216.69
8.0.60.0030.00316.65
8.0.50.0080.00016.84
8.0.30.0070.01217.16
8.0.20.0090.00917.40
8.0.10.0070.00017.02
8.0.00.0120.00516.68
7.4.330.0000.00615.00
7.4.320.0030.00316.59
7.4.300.0060.00016.50
7.4.290.0000.00716.42
7.4.280.0000.00716.51
7.4.270.0000.00716.55
7.4.260.0070.00016.62
7.4.250.0060.00316.48
7.4.240.0030.00316.54
7.4.230.0000.00716.68
7.4.220.0170.00716.54
7.4.210.0080.00616.56
7.4.200.0070.00016.50
7.4.190.0040.00416.80
7.4.160.0030.01316.52
7.4.150.0160.00317.40
7.4.140.0070.01817.86
7.4.130.0100.00816.54
7.4.120.0110.00916.59
7.4.110.0060.01216.70
7.4.100.0090.00916.61
7.4.90.0140.00316.51
7.4.80.0150.00319.39
7.4.70.0130.00316.46
7.4.60.0030.01516.46
7.4.50.0020.00216.56
7.4.40.0080.00816.42
7.4.30.0180.00316.50
7.4.10.0100.00714.98
7.4.00.0050.01314.97
7.3.330.0030.00313.14
7.3.320.0000.00613.27
7.3.310.0050.00216.22
7.3.300.0030.00316.16
7.3.290.0080.01016.30
7.3.280.0090.01116.32
7.3.270.0120.00917.40
7.3.260.0030.01716.54
7.3.250.0160.00116.55
7.3.240.0060.00916.29
7.3.230.0050.01216.39
7.3.210.0060.01116.59
7.3.200.0060.01619.39
7.3.190.0080.01416.33
7.3.180.0130.00316.35
7.3.170.0030.01316.63
7.3.160.0030.01316.66
7.3.130.0110.00714.66
7.3.120.0030.01114.63
7.3.110.0090.00914.63
7.3.100.0050.00314.54
7.3.90.0050.00514.86
7.3.80.0060.00314.75
7.3.70.0030.01014.78
7.3.60.0000.00814.76
7.3.50.0060.00314.89
7.3.40.0070.00714.89
7.3.30.0080.00614.71
7.3.20.0030.01416.51
7.3.10.0100.00016.71
7.3.00.0030.00916.47
7.2.330.0120.00616.33
7.2.320.0110.01116.60
7.2.310.0070.01016.61
7.2.300.0160.02116.42
7.2.290.0090.00916.70
7.2.260.0030.01614.92
7.2.250.0070.01014.68
7.2.240.0090.00614.96
7.2.230.0030.01015.02
7.2.220.0090.00615.22
7.2.210.0000.01215.18
7.2.200.0000.01114.80
7.2.190.0030.00714.92
7.2.180.0030.01014.88
7.2.170.0060.00615.09
7.2.160.0000.01114.84
7.2.150.0060.00616.73
7.2.140.0040.00716.64
7.2.130.0070.00916.67
7.2.120.0050.00916.71
7.2.110.0050.00816.81
7.2.100.0050.00816.78
7.2.90.0070.01016.93
7.2.80.0050.01016.87
7.2.70.0050.00816.83
7.2.60.0080.00816.83
7.2.50.0030.01016.84
7.2.40.0080.00316.78
7.2.30.0090.00516.74
7.2.20.0050.00916.83
7.2.10.0050.01016.79
7.2.00.0090.00717.62
7.1.330.0080.00515.60
7.1.320.0100.00315.52
7.1.310.0000.01115.55
7.1.300.0080.00515.86
7.1.290.0040.00815.91
7.1.280.0060.00615.70
7.1.270.0030.01015.87
7.1.260.0110.00015.64
7.1.250.0060.00815.78
7.1.240.0100.00215.82
7.1.230.0070.00515.67
7.1.220.0050.00615.79
7.1.210.0030.01015.89
7.1.200.0060.00515.56
7.1.190.0060.00615.79
7.1.180.0100.00215.71
7.1.170.0040.00615.82
7.1.160.0020.01115.71
7.1.150.0070.00915.87
7.1.140.0090.00615.63
7.1.130.0030.00915.86
7.1.120.0040.00715.59
7.1.110.0090.00315.70
7.1.100.0040.00916.60
7.1.90.0050.00515.74
7.1.80.0030.01015.73
7.1.70.0070.00516.09
7.1.60.0040.01117.00
7.1.50.0080.00616.07
7.1.40.0070.00615.69
7.1.30.0010.01015.64
7.1.20.0110.00515.72
7.1.10.0090.00315.50
7.1.00.0040.03017.94
7.0.330.0050.01015.31
7.0.320.0090.00315.34
7.0.310.0060.00915.34
7.0.300.0060.00615.30
7.0.290.0030.01015.28
7.0.280.0060.01015.27
7.0.270.0070.00715.34
7.0.260.0070.00915.23
7.0.250.0050.01215.32
7.0.240.0060.00615.53
7.0.230.0050.00915.51
7.0.220.0040.00615.40
7.0.210.0050.00915.42
7.0.200.0070.00615.61
7.0.190.0100.00315.38
7.0.180.0050.00815.47
7.0.170.0050.00615.29
7.0.160.0060.00415.43
7.0.150.0110.00315.16
7.0.140.0040.03217.62
7.0.130.0070.00715.26
7.0.120.0100.00515.52
7.0.110.0090.00715.43
7.0.100.0010.01015.38
7.0.90.0030.00615.41
7.0.80.0050.00715.40
7.0.70.0080.00715.49
7.0.60.0080.03016.84
7.0.50.0100.03216.33
7.0.40.0030.03215.72
7.0.30.0110.02815.57
7.0.20.0070.02015.67
7.0.10.0050.02015.65
7.0.00.0080.03115.67
5.6.400.0000.01814.27
5.6.390.0110.00314.37
5.6.380.0090.00614.17
5.6.370.0060.00814.33
5.6.360.0070.00714.37
5.6.350.0050.00814.47
5.6.340.0000.01414.51
5.6.330.0070.00814.37
5.6.320.0050.00614.25
5.6.310.0050.01114.35
5.6.300.0030.00814.37
5.6.290.0100.00614.11
5.6.280.0070.02816.54
5.6.270.0040.01114.23
5.6.260.0110.00514.24
5.6.250.0080.00714.46
5.6.240.0040.01114.37
5.6.230.0070.00914.39
5.6.220.0040.01014.26
5.6.210.0050.03416.29
5.6.200.0070.02215.63
5.6.190.0030.02916.21
5.6.180.0130.01716.29
5.6.170.0120.02916.30
5.6.160.0030.03816.32
5.6.150.0080.03015.49
5.6.140.0080.02715.44
5.6.130.0080.02715.59
5.6.120.0100.02816.50
5.6.110.0110.02616.68
5.6.100.0060.02316.40
5.6.90.0040.03616.48
5.6.80.0070.03216.40
5.6.70.0060.01214.19
5.6.60.0050.01214.00
5.6.50.0060.00914.05
5.6.40.0080.00514.21
5.6.30.0080.00714.04
5.6.20.0020.01214.04
5.6.10.0080.00814.17
5.6.00.0070.00414.10
5.5.380.0030.01112.60
5.5.370.0050.00912.73
5.5.360.0030.00812.55
5.5.350.1420.01715.31
5.5.340.0040.01714.43
5.5.330.0040.01715.18
5.5.320.0090.02015.25
5.5.310.0110.03215.29
5.5.300.0100.02814.46
5.5.290.0030.02514.51
5.5.280.0050.01815.26
5.5.270.0120.02815.53
5.5.260.0040.02515.46
5.5.250.0080.02315.33
5.5.240.0060.02815.14
5.5.230.0070.00612.63
5.5.220.0070.00512.57
5.5.210.0050.00712.69
5.5.200.0020.01112.75
5.5.190.0040.00512.75
5.5.180.0050.00712.78
5.5.170.0070.00312.78
5.5.160.0070.00212.64
5.5.150.0040.00712.71
5.5.140.0030.01012.73
5.5.130.0070.00212.49
5.5.120.0060.00612.57
5.5.110.0030.00912.66
5.5.100.0010.01012.61
5.5.90.0100.00012.68
5.5.80.0000.01012.62
5.5.70.0050.00812.65
5.5.60.0050.01012.56
5.5.50.0090.00312.58
5.5.40.0030.01212.53
5.5.30.0080.00312.62
5.5.20.0000.01212.76
5.5.10.0060.00612.50
5.5.00.0050.00812.58
5.4.450.0330.01914.25
5.4.440.0340.01714.26
5.4.430.0420.02214.27
5.4.420.0120.01625.08
5.4.410.0180.02023.46
5.4.400.0120.02022.16
5.4.390.0150.01421.58
5.4.380.0110.02313.97
5.4.370.0110.02214.04
5.4.360.0120.02313.93
5.4.350.0120.02514.00
5.4.340.0170.02114.00
5.4.330.0030.00511.66
5.4.320.0020.01711.93
5.4.310.0040.01611.93
5.4.300.0070.02411.93
5.4.290.0060.02411.93
5.4.280.0120.03011.89
5.4.270.0080.02911.89
5.4.260.0060.02411.89
5.4.250.0070.02511.89
5.4.240.0050.02111.89
5.4.230.0030.02511.89
5.4.220.0070.01911.89
5.4.210.0090.01611.89
5.4.200.0090.01911.89
5.4.190.0080.02011.89
5.4.180.0060.02111.89
5.4.170.0080.01811.89
5.4.160.0070.01911.89
5.4.150.0040.01911.89
5.4.140.0040.02211.78
5.4.130.0110.01611.79
5.4.120.0070.02111.76
5.4.110.0090.02011.76
5.4.100.0060.02111.76
5.4.90.0080.01711.76
5.4.80.0060.01911.76
5.4.70.0050.01911.76
5.4.60.0050.02011.76
5.4.50.0060.02111.76
5.4.40.0050.02211.76
5.4.30.0050.02211.76
5.4.20.0050.02611.76
5.4.10.0050.02211.76
5.4.00.0050.02211.59
5.3.290.0050.01712.03
5.3.280.0060.02312.00
5.3.270.0040.01912.00
5.3.260.0080.01812.00
5.3.250.0080.02212.00
5.3.240.0070.01712.00
5.3.230.0070.01912.00
5.3.220.0080.01511.99
5.3.210.0070.01611.99
5.3.200.0040.01611.99
5.3.190.0050.01711.99
5.3.180.0050.01611.98
5.3.170.0040.01711.98
5.3.160.0030.01711.99
5.3.150.0070.01511.98
5.3.140.0030.01711.98
5.3.130.0060.01611.98
5.3.120.0020.01911.98
5.3.110.0040.01711.98
5.3.100.0070.01211.80
5.3.90.0070.01711.79
5.3.80.0040.01711.79
5.3.70.0050.01911.79
5.3.60.0040.01711.79
5.3.50.0050.01411.77
5.3.40.0050.01611.77
5.3.30.0070.01911.75
5.3.20.0050.01911.68
5.3.10.0020.01711.67
5.3.00.0010.02311.67
5.2.170.0030.02010.20
5.2.160.0030.01910.20
5.2.150.0060.01710.20
5.2.140.0040.01910.20
5.2.130.0040.01710.18
5.2.120.0060.01810.18
5.2.110.0050.02410.18
5.2.100.0050.02110.18
5.2.90.0080.01910.18
5.2.80.0060.02110.17
5.2.70.0080.02010.17
5.2.60.0060.02310.15
5.2.50.0050.02210.14
5.2.40.0070.01710.13
5.2.30.0060.02010.11
5.2.20.0080.01910.11
5.2.10.0040.02310.06
5.2.00.0040.0229.99
5.1.60.0060.0199.63
5.1.50.0060.0189.63
5.1.40.0030.0219.62
5.1.30.0050.0219.80
5.1.20.0080.0209.81
5.1.10.0030.0229.67
5.1.00.0020.0229.67
5.0.50.0050.0148.91
5.0.40.0040.0168.84
5.0.30.0050.0228.74
5.0.20.0050.0158.73
5.0.10.0020.0168.72
5.0.00.0050.0218.71
4.4.90.0040.0127.98
4.4.80.0040.0117.97
4.4.70.0020.0147.96
4.4.60.0020.0127.96
4.4.50.0030.0147.97
4.4.40.0040.0187.94
4.4.30.0040.0127.97
4.4.20.0050.0118.01
4.4.10.0020.0148.01
4.4.00.0020.0187.97
4.3.110.0020.0117.92
4.3.100.0020.0117.92
4.3.90.0020.0197.91
4.3.80.0030.0177.88
4.3.70.0050.0117.90
4.3.60.0020.0117.90
4.3.50.0010.0147.90
4.3.40.0010.0207.86
4.3.30.0020.0137.24
4.3.20.0040.0127.23
4.3.10.0010.0137.21
4.3.00.0040.00825.72

preferences:
47.01 ms | 401 KiB | 5 Q