str_starts_with and str_ends_with functions in PHP

How can I write two functions that would take a string and return if it starts with the specified character/string or ends with it?

For example:

$str = '|apples}';

echo startsWith($str, '|'); //Returns true
echo endsWith($str, '}'); //Returns true

PHP 8.0 and higher

Since PHP 8.0 you can use:

str_starts_with and
str_ends_with

Example

var_dump(str_starts_with('|apples}', '|'));
var_dump(str_ends_with('|apples}', '}'));

PHP before 8.0

function startsWith( $haystack, $needle ) {
     $length = strlen( $needle );
     return substr( $haystack, 0, $length ) === $needle;
}

function endsWith( $haystack, $needle ) {
    $length = strlen( $needle );
    if( !$length ) {
        return true;
    }
    return substr( $haystack, -$length ) === $needle;
}