PHP array iteration issues

Question

Hey, so I have this array, called $files (var_dump()ed):

array(2) {
  [0]=>
  array(1) {
    ["_c"]=>
    array(2) {
      ["title"]=>
      array(1) {
        ["_v"]=>
        string(9) "blueprint"
      }
      ["src"]=>
      array(1) {
        ["_v"]=>
        string(20) "blueprint/screen.css"
      }
    }
  }
  [1]=>
  array(1) {
    ["_c"]=>
    array(2) {
      ["title"]=>
      array(1) {
        ["_v"]=>
        string(7) "general"
      }
      ["src"]=>
      array(1) {
        ["_v"]=>
        string(11) "general.css"
      }
    }
  }
}

but when I:

foreach($files as $file){
    // etc.
}

I get an Invalid argument supplied for foreach()

Any ideas? thanks.

It is not possible. Give the complete code that reproduces this issue. — zerkms
– zerkms, Commented May 9, 2011 at 1:49
@nomaD: it is not complete code. Add all variables definitions to that snippet so we can just copy-paste it, run and see the issue. — zerkms
– zerkms, Commented May 9, 2011 at 1:59
pastebin.com/rCp6EbPn line 114 is the one that gives an error — wyqydsyq
– wyqydsyq, Commented May 9, 2011 at 2:12

VoteyDisciple · Accepted Answer · 2011-05-09 02:40:53Z

2

Ahhh. I see what you're doing. You are quite correct that for the css key you get file tags and thus a valid array:

    <css>
        <file>
            <title>blueprint</title>
            <src>blueprint/screen.css</src>
        </file>
        <file>
            <title>general</title>
            <src>general.css</src>
        </file>
    </css>

But how about when the js key comes up?

    <js>

    </js>

Sure enough, there is no file key, there is no array, and PHP chokes.

You may want to throw a

if (!isset($files['file'])) continue;

in there.

edited May 9, 2011 at 2:40

answered May 9, 2011 at 2:23

VoteyDisciple

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4 Comments

wyqydsyq Over a year ago

The key 'file' is actually brought in from the xml file. On line 105 you can see I go through it as an array, just not in a while() loop. var_dump()ing $files after line 113 (aka $files['file']) gives me the array in the original question. See: pastebin.com/qvGbX4K2

VoteyDisciple Over a year ago

I misread that. Edited with a completely different (and must more tangible) explanation.

wyqydsyq Over a year ago

Ok now this is REALLY doing my head in, I just added in another while loop before the one that breaks: pastebin.com/nhJrJCT6 They both work fine, but also give me warnings at the same time!

wyqydsyq Over a year ago

Yeah it turns out the error was from the js array (which now that I think about it wouldn't exist because there were no files in the js area). Problem solved 100% thanks a lot mate! :D

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