What potential issues can arise when using the count() function in PHP on arrays?

When using the count() function in PHP on arrays, one potential issue that can arise is if the array is not defined or is empty, count() will return 1 instead of 0. To solve this issue, you can use the isset() function to check if the array is set and not empty before using count(). 

// Check if array is set and not empty before using count()
if(isset($array) && !empty($array)) {
    $count = count($array);
} else {
    $count = 0;
}

echo $count;

Keywords

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