E_WARNING: Invalid argument supplied for foreach()
The PHP error "E_WARNING: Invalid argument supplied for foreach()" occurs when you try to use a foreach loop to iterate over a variable that is not an array or an object. This could happen if the variable is null or if it's a string, integer, or other non-iterable data type. Always ensure that the variable you're passing to foreach is an array or an object.
Example:
<?php
$someVariable = null;
foreach($someVariable as $row) {
//
}
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