vendor/guzzlehttp/guzzle/src/functions.php

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<?php

namespace GuzzleHttp;

/**
 * Debug function used to describe the provided value type and class.
 *
 * @param mixed $input Any type of variable to describe the type of. This
 *                     parameter misses a typehint because of that.
 *
 * @return string Returns a string containing the type of the variable and
 *                if a class is provided, the class name.
 *
 * @deprecated describe_type will be removed in guzzlehttp/guzzle:8.0. Use Utils::describeType instead.
 */
function describe_type($input): string
{
    return Utils::describeType($input);
}

/**
 * Parses an array of header lines into an associative array of headers.
 *
 * @param iterable $lines Header lines array of strings in the following
 *                        format: "Name: Value"
 *
 * @deprecated headers_from_lines will be removed in guzzlehttp/guzzle:8.0. Use Utils::headersFromLines instead.
 */
function headers_from_lines(iterable $lines): array
{
    return Utils::headersFromLines($lines);
}

/**
 * Returns a debug stream based on the provided variable.
 *
 * @param mixed $value Optional value
 *
 * @return resource
 *
 * @deprecated debug_resource will be removed in guzzlehttp/guzzle:8.0. Use Utils::debugResource instead.
 */
function debug_resource($value = null)
{
    return Utils::debugResource($value);
}

/**
 * Chooses and creates a default handler to use based on the environment.
 *
 * The returned handler is not wrapped by any default middlewares.
 *
 * @throws \RuntimeException if no viable Handler is available.
 *
 * @return callable(\Psr\Http\Message\RequestInterface, array): \GuzzleHttp\Promise\PromiseInterface Returns the best handler for the given system.
 *
 * @deprecated choose_handler will be removed in guzzlehttp/guzzle:8.0. Use Utils::chooseHandler instead.
 */
function choose_handler(): callable
{