How can you assign a static value to the first value (id) in a multidimensional array if it is empty in PHP?

When dealing with a multidimensional array in PHP, if the first value (id) is empty, you can assign a static value to it by using array_key_exists() function to check if the key exists and then assigning the static value if it doesn't. This ensures that the first value is always set to a specific value even if it was initially empty. 

// Example multidimensional array
$multiArray = array(
    array('id' => '', 'name' => 'John'),
    array('id' => 2, 'name' => 'Jane'),
    array('id' => 3, 'name' => 'Doe')
);

// Assigning a static value to the first 'id' if it is empty
if (!array_key_exists('id', $multiArray[0])) {
    $multiArray[0]['id'] = 1; // Assigning static value 1
}

// Output the updated multidimensional array
print_r($multiArray);

Keywords

PHP multidimensional array static value empty assignment

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