Decompression of deflated string.

Will attempt to decompress using the RFC 1950 standard, and if that fails then the RFC 1951 standard deflate will be attempted. Finally, the RFC 1952 standard gzip decode will be attempted. If all fail, then the original compressed string will be returned.

$compressed string Required

String to decompress.

$length int Optional

The optional length of the compressed data.

Default: null

string|false Decompressed string on success, false on failure.

File: wp-includes/class-wp-http-encoding.php. View all references

public static function decompress( $compressed, $length = null ) {

	if ( empty( $compressed ) ) {
		return $compressed;
	}

	$decompressed = @gzinflate( $compressed );
	if ( false !== $decompressed ) {
		return $decompressed;
	}

	$decompressed = self::compatible_gzinflate( $compressed );
	if ( false !== $decompressed ) {
		return $decompressed;
	}

	$decompressed = @gzuncompress( $compressed );
	if ( false !== $decompressed ) {
		return $decompressed;
	}

	if ( function_exists( 'gzdecode' ) ) {
		$decompressed = @gzdecode( $compressed );

		if ( false !== $decompressed ) {
			return $decompressed;
		}
	}

	return $compressed;
}