What does the error "Wrong data type for start key" in PHP indicate when using array_fill?

The error "Wrong data type for start key" in PHP indicates that the start index provided to the array_fill function is not of type integer. To solve this issue, make sure that the start index is an integer value before using it in the array_fill function. 

$startIndex = 0; // Make sure the start index is an integer value
$length = 5;
$value = 'Hello';

$array = array_fill($startIndex, $length, $value);
print_r($array);

Keywords

PHP array_fill error data type start key

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