How Can I Check if a String Starts or Ends with a Specific Substring in PHP?

Understanding PHP's startsWith() and endsWith() Functions

In PHP, the startsWith() and endsWith() functions provide a convenient way to determine if a string begins or terminates with a specific character or substring. Here's how you can implement them:

PHP 8.0 and Above

For PHP versions 8.0 and higher, the built-in str_starts_with and str_ends_with functions offer a straightforward solution:

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

PHP Versions Before 8.0

For PHP versions prior to 8.0, you can utilize the following custom functions:

startsWith() Function

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

echo startsWith('|apples}', '|'); // true

endsWith() Function

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

echo endsWith('|apples}', '}'); // true

These functions accept two arguments: the input string (haystack) and the character or substring (needle) to check for. They return true if the haystack starts or ends with the needle, and false otherwise.

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