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POWorking with multi-level arrays
 

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    <p>hello i am learning PHP and came upon this multi-level array after using print_r on <code>$this-&gt;root</code></p> <pre><code> Array ( [0] =&gt; 9 [obj] =&gt; 3562 [gen] =&gt; 0 [1] =&gt; Array ( [0] =&gt; 5 [1] =&gt; Array ( [/AcroForm] =&gt; Array ( [0] =&gt; 8 [1] =&gt; 3563 [2] =&gt; 0 ) [/Metadata] =&gt; Array ( [0] =&gt; 8 [1] =&gt; 3559 [2] =&gt; 0 ) [/PageLabels] =&gt; Array ( [0] =&gt; 8 [1] =&gt; 3389 [2] =&gt; 0 ) [/Pages] =&gt; Array ( [0] =&gt; 8 [1] =&gt; 3392 [2] =&gt; 0 ) [/Type] =&gt; Array ( [0] =&gt; 2 [1] =&gt; /Catalog ) ) ) ) Array ( [0] =&gt; 9 [obj] =&gt; 8 [gen] =&gt; 0 [1] =&gt; Array ( [0] =&gt; 5 [1] =&gt; Array ( [/Type] =&gt; Array ( [0] =&gt; 2 [1] =&gt; /Catalog ) [/Pages] =&gt; Array ( [0] =&gt; 8 [1] =&gt; 1 [2] =&gt; 0 ) [/OpenAction] =&gt; Array ( [0] =&gt; 6 [1] =&gt; Array ( [0] =&gt; Array ( [0] =&gt; 8 [1] =&gt; 3 [2] =&gt; 0 ) [1] =&gt; Array ( [0] =&gt; 2 [1] =&gt; /FitH ) [2] =&gt; Array ( [0] =&gt; 0 ) ) ) [/PageLayout] =&gt; Array ( [0] =&gt; 2 [1] =&gt; /OneColumn ) ) ) ) </code></pre> <p>i have an question about the behavior of using multi-level arrays, i want to use this function</p> <pre><code>$pages = $this-&gt;pdf_resolve_object($this-&gt;c, $this-&gt;root[1][1]['/Pages']); </code></pre> <p>and <code>$this-&gt;root[1][1]['/Pages']</code> which i believe is used to check the array for these keys and if it exists then use as variable for pdf_resolve_object</p> <p>so my question is 2-fold, one is does <code>$this-&gt;root[1][1]['/Pages']</code> check the array and goes through the keys? if not what is its behavior? and 2 when it checks the array does it go through just the top 4 keys or all of the sub-keys?</p> <p>If someone can help or link me to some learning material that would be much appreciated, thank you!</p>
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    1. COif i am completely wrong please inform me!!
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