public function offsetExists()

in Core/Core_c.php [126:175]


    public function offsetExists(#[LanguageLevelTypeAware(['8.0' => 'mixed'], default: '')] $offset): bool;

    /**
     * Offset to retrieve
     * @link https://php.net/manual/en/arrayaccess.offsetget.php
     * @param TKey $offset <p>
     * The offset to retrieve.
     * </p>
     * @return TValue Can return all value types.
     */
    #[TentativeType]
    public function offsetGet(#[LanguageLevelTypeAware(['8.0' => 'mixed'], default: '')] $offset): mixed;

    /**
     * Offset to set
     * @link https://php.net/manual/en/arrayaccess.offsetset.php
     * @param TKey $offset <p>
     * The offset to assign the value to.
     * </p>
     * @param TValue $value <p>
     * The value to set.
     * </p>
     * @return void
     */
    #[TentativeType]
    public function offsetSet(
        #[LanguageLevelTypeAware(['8.0' => 'mixed'], default: '')] $offset,
        #[LanguageLevelTypeAware(['8.0' => 'mixed'], default: '')] $value
    ): void;

    /**
     * Offset to unset
     * @link https://php.net/manual/en/arrayaccess.offsetunset.php
     * @param TKey $offset <p>
     * The offset to unset.
     * </p>
     * @return void
     */
    #[TentativeType]
    public function offsetUnset(#[LanguageLevelTypeAware(['8.0' => 'mixed'], default: '')] $offset): void;
}

/**
 * Interface for customized serializing.<br>
 * As of PHP 8.1.0, a class which implements Serializable without also implementing `__serialize()` and `__unserialize()`
 * will generate a deprecation warning.
 * @link https://php.net/manual/en/class.serializable.php
 */
interface Serializable
{