3v4l.org

run code in 300+ PHP versions simultaneously
<?php header('content-type:text/plain'); function HTMLStringify($arr, $seen = array()) { if (is_array($arr)) { $seen[] = &$arr; $html = '<ul>'; foreach ($arr as $key => &$value) { $html .= '<li>' . $key; if (is_array($value)){ if(in_array($value, $seen, true)) { $html .= '*RECURSION*'; } else { $html .= HTMLStringify($value, $seen); } } elseif(is_numeric($value) || is_string($value) || is_null($value)) { $html .= ' = ' . $value; } else { $html .= ' [couldn\'t parse ' . gettype($value) . ']'; } $html .= '</li>'; } $html .= '</ul>'; return $html; } else { return null; } } $arr = array(1 => 'one', 2 => 'two'); $arr[3] = &$arr; echo HTMLStringify($arr);

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)
8.3.60.0070.00716.50
8.3.50.0080.01122.16
8.3.40.0120.00418.45
8.3.30.0090.00619.07
8.3.20.0080.00019.91
8.3.10.0050.00323.48
8.3.00.0040.00419.50
8.2.180.0150.00316.38
8.2.170.0120.00322.96
8.2.160.0090.00620.44
8.2.150.0050.00224.18
8.2.140.0080.00024.66
8.2.130.0100.01026.16
8.2.120.0080.00022.25
8.2.110.0110.00022.33
8.2.100.0080.00417.91
8.2.90.0080.00019.29
8.2.80.0040.00418.05
8.2.70.0060.00317.63
8.2.60.0000.00818.04
8.2.50.0060.00318.07
8.2.40.0040.00418.34
8.2.30.0040.00418.11
8.2.20.0030.00617.68
8.2.10.0040.00418.00
8.2.00.0030.00617.62
8.1.280.0060.00925.92
8.1.270.0090.00022.03
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0040.00423.86
8.1.230.0100.00019.10
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0000.00917.35
8.1.190.0030.00517.41
8.1.180.0050.00318.10
8.1.170.0090.00018.44
8.1.160.0040.00422.05
8.1.150.0030.00518.57
8.1.140.0050.00217.36
8.1.130.0000.00717.73
8.1.120.0000.00817.46
8.1.110.0000.01117.48
8.1.100.0000.00817.44
8.1.90.0000.00717.47
8.1.80.0040.00417.50
8.1.70.0030.00517.30
8.1.60.0090.00317.60
8.1.50.0030.00617.38
8.1.40.0030.00517.50
8.1.30.0030.00617.45
8.1.20.0040.00417.62
8.1.10.0050.00317.40
8.1.00.0040.00417.33
8.0.300.0090.00018.77
8.0.290.0060.00317.03
8.0.280.0060.00418.45
8.0.270.0000.00717.22
8.0.260.0000.00617.13
8.0.250.0000.00817.00
8.0.240.0000.00616.84
8.0.230.0030.00316.84
8.0.220.0040.00416.88
8.0.210.0000.00716.90
8.0.200.0060.00017.01
8.0.190.0040.00417.00
8.0.180.0080.00016.88
8.0.170.0000.00816.95
8.0.160.0000.00716.84
8.0.150.0040.00416.80
8.0.140.0070.00016.88
8.0.130.0030.00313.28
8.0.120.0040.00416.74
8.0.110.0000.00716.86
8.0.100.0040.00416.82
8.0.90.0050.00316.74
8.0.80.0110.00416.93
8.0.70.0000.00716.77
8.0.60.0040.00416.79
8.0.50.0000.00816.79
8.0.30.0110.00916.92
8.0.20.0120.00617.40
8.0.10.0000.00817.02
8.0.00.0080.01016.60
7.4.330.0050.00015.08
7.4.320.0000.00716.65
7.4.300.0030.00316.55
7.4.290.0040.00416.60
7.4.280.0000.00816.59
7.4.270.0040.00416.60
7.4.260.0030.00316.50
7.4.250.0040.00416.36
7.4.240.0030.00316.51
7.4.230.0000.00716.53
7.4.220.0060.01216.63
7.4.210.0050.01016.64
7.4.200.0000.00716.67
7.4.190.0030.00316.65
7.4.160.0080.00816.54
7.4.150.0120.00617.40
7.4.140.0090.00717.86
7.4.130.0110.00616.59
7.4.120.0090.00816.47
7.4.110.0030.01416.76
7.4.100.0060.01216.73
7.4.90.0060.01016.61
7.4.80.0070.01719.39
7.4.70.0000.01816.49
7.4.60.0040.01416.54
7.4.50.0030.00316.36
7.4.40.0100.00722.77
7.4.30.0120.00916.54
7.4.10.0120.00615.04
7.4.00.0060.01214.83
7.3.330.0000.00613.23
7.3.320.0050.00013.19
7.3.310.0040.00416.40
7.3.300.0030.00316.25
7.3.290.0050.00816.25
7.3.280.0080.00916.35
7.3.270.0130.00317.40
7.3.260.0110.00716.41
7.3.250.0160.00616.33
7.3.240.0100.00716.38
7.3.230.0060.01216.50
7.3.210.0070.01016.28
7.3.200.0070.01119.39
7.3.190.0120.00916.64
7.3.180.0110.00516.37
7.3.170.0130.00316.36
7.3.160.0090.01216.59
7.3.130.0140.00314.79
7.3.120.0070.00914.93
7.3.110.0060.01014.95
7.3.100.0060.00914.84
7.3.90.0030.01114.73
7.3.80.0050.00814.93
7.3.70.0060.00714.73
7.3.60.0030.00914.79
7.3.50.0080.00714.86
7.3.40.0040.00814.74
7.3.30.0040.00814.79
7.3.20.0040.00916.68
7.3.10.0050.00616.59
7.3.00.0050.00716.54
7.2.330.0140.00316.86
7.2.320.0070.01016.70
7.2.310.0090.00816.70
7.2.300.0030.01216.77
7.2.290.0070.01016.57
7.2.260.0030.01415.27
7.2.250.0090.01015.00
7.2.240.0060.01015.05
7.2.230.0060.00815.03
7.2.220.0030.01015.15
7.2.210.0050.00814.96
7.2.200.0050.01014.89
7.2.190.0050.00915.05
7.2.180.0020.01315.17
7.2.170.0070.00715.12
7.2.160.0080.00514.92
7.2.150.0070.00517.07
7.2.140.0050.01016.91
7.2.130.0060.00516.91
7.2.120.0040.00716.92
7.2.110.0100.00416.91
7.2.100.0050.00816.79
7.2.90.0070.00616.84
7.2.80.0070.00716.90
7.2.70.0070.00516.76
7.2.60.0050.00716.89
7.2.50.0120.00516.74
7.2.40.0050.01016.84
7.2.30.0080.00616.85
7.2.20.0060.00916.82
7.2.10.0070.00916.99
7.2.00.0090.00517.67
7.1.330.0050.01115.91
7.1.320.0070.00415.65
7.1.310.0060.00515.88
7.1.300.0060.00915.80
7.1.290.0070.00815.79
7.1.280.0030.00915.75
7.1.270.0030.00815.88
7.1.260.0070.00615.75
7.1.250.0030.00915.77
7.1.240.0010.00915.83
7.1.230.0070.00515.90
7.1.220.0040.00815.89
7.1.210.0050.00715.67
7.1.200.0060.00715.67
7.1.190.0050.00515.67
7.1.180.0060.00815.82
7.1.170.0040.01015.77
7.1.160.0070.00715.70
7.1.150.0060.00815.78
7.1.140.0090.00615.72
7.1.130.0010.01315.85
7.1.120.0040.01015.73
7.1.110.0050.00715.81
7.1.100.0050.00916.41
7.1.90.0060.00615.69
7.1.80.0060.00815.90
7.1.70.0070.00716.19
7.1.60.0090.00816.55
7.1.50.0070.00716.04
7.1.40.0030.00915.68
7.1.30.0080.00415.74
7.1.20.0060.00415.79
7.1.10.0070.00715.77
7.1.00.0070.02017.37
7.0.330.0010.01015.30
7.0.320.0020.00915.33
7.0.310.0040.01015.26
7.0.300.0050.00915.45
7.0.290.0030.00915.42
7.0.280.0070.00815.40
7.0.270.0080.00715.38
7.0.260.0030.00915.42
7.0.250.0070.00615.30
7.0.240.0080.00715.42
7.0.230.0040.01015.26
7.0.220.0070.00515.28
7.0.210.0070.00715.43
7.0.200.0060.00515.84
7.0.190.0030.01115.48
7.0.180.0070.00515.41
7.0.170.0020.01315.23
7.0.160.0050.00715.43
7.0.150.0060.00715.47
7.0.140.0070.02117.06
7.0.130.0080.00515.24
7.0.120.0060.00715.34
7.0.110.0060.00615.38
7.0.100.0050.00715.34
7.0.90.0030.01015.41
7.0.80.0040.00915.43
7.0.70.0030.00715.32
7.0.60.0080.02316.58
7.0.50.0070.01816.07
7.0.40.0050.02315.22
7.0.30.0110.01415.05
7.0.20.0130.01915.19
7.0.10.0080.01515.10
7.0.00.0050.02715.15
5.6.400.0040.00714.49
5.6.390.0040.00914.43
5.6.380.0050.00714.27
5.6.370.0060.00714.55
5.6.360.0100.00514.51
5.6.350.0050.00914.41
5.6.340.0070.00714.37
5.6.330.0070.00314.36
5.6.320.0040.00814.47
5.6.310.0070.00614.31
5.6.300.0040.00714.54
5.6.290.0070.00914.37
5.6.280.0070.02316.12
5.6.270.0090.00214.31
5.6.260.0080.00314.37
5.6.250.0050.00914.35
5.6.240.0040.00814.34
5.6.230.0080.00714.44
5.6.220.0060.00714.44
5.6.210.0090.01216.01
5.6.200.0060.02615.33
5.6.190.0040.02115.97
5.6.180.0140.02316.03
5.6.170.0100.02615.95
5.6.160.0060.02615.91
5.6.150.0040.01715.31
5.6.140.0030.02815.33
5.6.130.0070.02515.35
5.6.120.0090.01316.10
5.6.110.0070.02216.02
5.6.100.0030.03016.00
5.6.90.0040.02115.92
5.6.80.0050.02715.82
5.6.70.0930.01415.82
5.6.60.0080.00614.20
5.6.50.0040.00914.45
5.6.40.0050.01014.27
5.6.30.0080.00614.20
5.6.20.0040.01014.20
5.6.10.0070.00414.30
5.6.00.0070.00914.31
5.5.380.0090.00414.24
5.5.370.0070.00714.13
5.5.360.0040.00714.23
5.5.350.0130.02115.91
5.5.340.0060.02615.17
5.5.330.0070.02315.81
5.5.320.0050.01915.85
5.5.310.0120.02315.87
5.5.300.0070.01715.18
5.5.290.0040.02815.14
5.5.280.0040.01915.91
5.5.270.0080.01415.82
5.5.260.0080.02515.88
5.5.250.0070.02315.84
5.5.240.0090.01315.71
5.5.230.0090.00314.31
5.5.220.0090.00414.30
5.5.210.0090.00314.28
5.5.200.0050.00814.26
5.5.190.0010.01213.93
5.5.180.0040.00814.13
5.5.170.0040.01014.21
5.5.160.0090.00714.16
5.5.150.0040.01014.19
5.5.140.0070.00614.07
5.5.130.0040.00914.24
5.5.120.0060.00514.27
5.5.110.0030.00814.20
5.5.100.0070.00614.28
5.5.90.0010.01014.16
5.5.80.0060.00714.10
5.5.70.0070.00814.11
5.5.60.0020.01114.24
5.5.50.0040.00914.08
5.5.40.0030.00914.11
5.5.30.0060.00514.14
5.5.20.0030.01013.99
5.5.10.0070.00514.10
5.5.00.0050.00814.12
5.4.450.0330.01713.46
5.4.440.0190.01813.40
5.4.430.0210.02013.43
5.4.420.0100.01713.50
5.4.410.0240.01913.35
5.4.400.0140.01413.33
5.4.390.0140.01813.35
5.4.380.0140.02313.21
5.4.370.0120.01413.25
5.4.360.0110.01913.37
5.4.350.0120.01813.29
5.4.340.0080.01813.27
5.4.330.0050.00611.50
5.4.320.0030.01711.65
5.4.310.0060.01411.67
5.4.300.0020.01811.64
5.4.290.0060.01111.78
5.4.280.0070.01411.63
5.4.270.0050.01711.78
5.4.260.0030.02511.52
5.4.250.0080.02511.72
5.4.240.0050.02111.62
5.4.230.0060.02411.79
5.4.220.0040.02511.78
5.4.210.0070.01811.62
5.4.200.0090.02511.60
5.4.190.0090.03011.71
5.4.180.0070.03111.57
5.4.170.0080.02511.66
5.4.160.0080.01811.69
5.4.150.0050.01711.72
5.4.140.0060.02811.53
5.4.130.0050.01911.50
5.4.120.0080.02411.55
5.4.110.0050.02711.59
5.4.100.0080.01711.53
5.4.90.0050.02011.54
5.4.80.0080.01711.58
5.4.70.0070.01811.55
5.4.60.0060.01711.64
5.4.50.0090.02411.55
5.4.40.0100.01911.58
5.4.30.0060.01911.66
5.4.20.0040.02311.65
5.4.10.0050.02211.52
5.4.00.0040.01911.40
5.3.290.0060.01711.57
5.3.280.0090.02111.49
5.3.270.0050.02311.56
5.3.260.0060.02011.50
5.3.250.0030.01911.43
5.3.240.0080.01811.43
5.3.230.0030.01511.49
5.3.220.0120.02611.36
5.3.210.0060.02011.41
5.3.200.0130.02711.39
5.3.190.0060.01511.46
5.3.180.0060.01511.46
5.3.170.0060.01411.49
5.3.160.0040.01611.48
5.3.150.0090.02311.54
5.3.140.0030.01911.50
5.3.130.0080.01411.45
5.3.120.0080.02611.48
5.3.110.0080.01611.48
5.3.100.0080.01711.34
5.3.90.0130.03111.36
5.3.80.0070.02011.31
5.3.70.0060.01811.25
5.3.60.0040.02511.32
5.3.50.0100.02411.21
5.3.40.0070.02011.29
5.3.30.0070.01611.34
5.3.20.0070.01511.20
5.3.10.0070.01511.17
5.3.00.0080.01811.06
5.2.170.0150.0419.19
5.2.160.0070.0449.19
5.2.150.0160.0679.19
5.2.140.0120.0629.18
5.2.130.0190.0449.15
5.2.120.0120.0489.14
5.2.110.0300.0439.15
5.2.100.0140.0609.15
5.2.90.0280.0569.14
5.2.80.0100.0669.15
5.2.70.0160.0739.14
5.2.60.0100.0529.10
5.2.50.0150.0519.07
5.2.40.0160.0519.04
5.2.30.0180.0499.02
5.2.20.0090.0889.01
5.2.10.0260.0778.92
5.2.00.0100.0508.79
5.1.60.0050.0428.07
5.1.50.0120.0428.07
5.1.40.0060.0448.05
5.1.30.0180.0478.40
5.1.20.0120.0548.43
5.1.10.0150.0528.15
5.1.00.0120.0328.15
5.0.50.0040.0236.64
5.0.40.0050.0226.50
5.0.30.0060.0366.30
5.0.20.0050.0216.28
5.0.10.0060.0216.26
5.0.00.0050.0316.25
4.4.90.0150.0604.78
4.4.80.0070.0174.75
4.4.70.0040.0164.75
4.4.60.0030.0184.75
4.4.50.0060.0174.77
4.4.40.0040.0274.71
4.4.30.0060.0164.76
4.4.20.0060.0154.85
4.4.10.0030.0194.85
4.4.00.0010.0284.76
4.3.110.0170.0254.67
4.3.100.0080.0224.66
4.3.90.0060.0194.64
4.3.80.0090.0304.58
4.3.70.0070.0204.63
4.3.60.0120.0284.63
4.3.50.0080.0554.62
4.3.40.0150.0454.53
4.3.30.0040.0243.29
4.3.20.0040.0163.27
4.3.10.0020.0183.23
4.3.00.0300.01310.37

preferences:
53.39 ms | 400 KiB | 5 Q