Here are a few question-based titles based on your provided text, focusing on the problem and its solution: Short and Direct: * PHP Warning: Invalid Argument Supplied for foreach(): How to Fix It? *

PHP Warning: Invalid Argument Supplied for foreach()

This PHP warning occurs when you attempt to iterate over something that is not an array. In your code snippet, you face this issue in two instances:

Iteration 1:

<code class="php">foreach($keywordsXML->PopularSearchResult as $item) {
    // ...
}</code>

Here, $keywordsXML->PopularSearchResult is an object, not an array. To fix this, you should convert it to an array using the get_object_vars() function.

Revised Code:

<code class="php">foreach(get_object_vars($keywordsXML->PopularSearchResult) as $item) {
    // ...
}</code>

Iteration 2:

<code class="php">// get user guides
$guidesXML = getEbayGuides($q);
$guides = array();
foreach ($guidesXML->guide as $guideXML) {
    // ...
}</code>

In this instance, $guidesXML->guide is also an object. To iterate over it, convert it to an array as well.

Revised Code:

<code class="php">// get user guides
$guidesXML = getEbayGuides($q);
$guides = array();
foreach(get_object_vars($guidesXML->guide) as $guideXML) {
    // ...
}</code>

Remember to check if your variables are arrays before using foreach to prevent the "Invalid Argument Supplied for foreach()" warning.

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