function_exists( 'array_key_last' ) ) {
/**
* Polyfill for `array_key_last()` function added in PHP 7.3.
*
* Get the last key of the given array without affecting the
* internal array pointer.
*
* @since 5.9.0
*
* @param array $arr An array.
* @return string|int|null The last key of array if the array
*. is not empty; `null` otherwise.
*/
function array_key_last( array $arr ) {
if ( empty( $arr ) ) {
return null;
}
end( $arr );
return key( $arr );
}
}
if ( ! function_exists( 'str_contains' ) ) {
/**
* Polyfill for `str_contains()` function added in PHP 8.0.
*
* Performs a case-sensitive check indicating if needle is
* contained in haystack.
*
* @since 5.9.0
*
* @param string $haystack The string to search in.
* @param string $needle The substring to search for in the haystack.
* @return bool True if `$needle` is in `$haystack`, otherwise false.
*/
function str_contains( $haystack, $needle ) {
return ( '' === $needle || false !== strpos( $haystack, $needle ) );
}
}
if ( ! function_exists( 'str_starts_with' ) ) {
/**
* Polyfill for `str_starts_with()` function added in PHP 8.0.
*
* Performs a case-sensitive check indicating if
* the haystack begins with needle.
*
* @since 5.9.0
*
* @param string $haystack The string to search in.
* @param string $needle The substring to search for in the `$haystack`.
* @return bool True if `$haystack` starts with `$needle`, otherwise false.
*/
function str_starts_with( $haystack, $needle ) {
if ( '' === $needle ) {
return true;
}
return 0 === strpos( $haystack, $needle );
}
}
if ( ! function_exists( 'str_ends_with' ) ) {
/**
* Polyfill for `str_ends_with()` function added in PHP 8.0.
*
* Performs a case-sensitive check indicating if
* the haystack ends with needle.
*
* @since 5.9.0
*
* @param string $haystack The string to search in.
* @param string $needle The substring to search for in the `$haystack`.
* @return bool True if `$haystack` ends with `$needle`, otherwise false.
*/
function str_ends_with( $haystack, $needle ) {
if ( '' === $haystack && '' !== $needle ) {
return false;
}
$len = strlen( $needle );
return 0 === substr_compare( $haystack, $needle, -$len, $len );
}
}
// IMAGETYPE_WEBP constant is only defined in PHP 7.1 or later.
if ( ! defined( 'IMAGETYPE_WEBP' ) ) {
define( 'IMAGETYPE_WEBP', 18 );
}
// IMG_WEBP constant is only defined in PHP 7.0.10 or later.
if ( ! defined( 'IMG_WEBP' ) ) {
define( 'IMG_WEBP', IMAGETYPE_WEBP );
}
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