How to Resolve \'Illegal Offset Type\' Error When Iterating Through Arrays with Dynamic Keys?

Resolving "Illegal Offset Type" Error in PHP while Iterating XML

The "illegal offset type" error in PHP typically arises when attempting to access an array element using an object or an array as the index key.

Analyzing the Code:

In the provided code snippet:

• $xml->entry[$i]->source is the array index key.
• $source is a variable that you want to use as the key for the $s array.

If $xml->entry[$i]->source contains an object or array, you will encounter the error because the syntax expects a string, integer, or float as the array index key.

Addressing the Issue:

To resolve this issue, ensure that $xml->entry[$i]->source consistently holds a valid array index key data type (e.g., string). You can do this by inspecting the contents of $xml->entry[$i] to confirm that it contains the desired data structure and that $source is a valid array key.

If you intend to use an object or array as the array index, you can consider using a specialized data structure like a hash map or a key-value store that allows non-scalar types as keys.

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