Are there any specific guidelines or recommendations for structuring PHP code to prevent warnings like "shuffle() expects parameter 1 to be array, null given" when working with arrays in loops or conditional statements?

To prevent warnings like "shuffle() expects parameter 1 to be array, null given" when working with arrays in loops or conditional statements, you should always check if the array is not null before calling functions like shuffle(). This can be done using the isset() function to verify the existence of the array. 

// Check if the array is not null before shuffling
if(isset($myArray) && is_array($myArray)){
    shuffle($myArray);
    // Perform actions on shuffled array
} else {
    // Handle case where array is null
}

Keywords

PHP shuffle() arrays loops conditional statements

Related Questions