A grapheme is the smallest functional unit of a writing system. Graphemes can be interpreted as the smallest units of writing that correspond with sounds.The grapheme_strlen() function in PHP is used to get the string length in grapheme units. This function does not get the byte or character's length. The grapheme_strlen function is supported in PHP 5.3.0 and higher versions.Syntaxinteger grapheme_strlen($str_string)Parametersgrapheme_strlen() accepts only one parameter −$str_string − The string parameter is used to measure the length of the string and it must use a UTF-8 encoding string.Return ValuesThis function returns the length of the string on success or it returns ... Read More

The idn_to_ascii() function in PHP is used to convert a Unicode domain name into IDNA ASCII form. IDNA stands for Internationalizing Domain Names in Applications. It is a mechanism for handling internationalized domain names containing nonASCII characters.Syntaxstring idn_to_ascii( str $domain, integer $flags=IDNA_DEFAULT, integer $variant=INTL_IDNA_VARIANT_UTS46, arr &$idna_info=null )Parametersidn_to_ascii() accepts the following four parameters −$domain − This is the domain to be converted; it must be UTF-8 encoded.$flags − This parameter is a combination of IDNA_*constants.$variant − This parameter uses either INTL_IDNA_VARIANT_2003 for IDNA 2003 or INTL_IDNA_VARIANT_UTS46 for UTS#46.$idna_info − ... Read More

The EXIF (Exchangeable image file format) PHP extension enables to work with the metadata from the images taken by digital devices like digital cameras, cell phones, etc. It depends on the image file format. We can retrieve embedded thumbnails of images.The exif_imagetype() function in PHP is used to determine the type of an image. This function reads the first bytes of a given image and checks its signature. It can also be used to avoid calls to other EXIF functions with unsupported file types or in conjunction with $_server['http_accept'] to check whether or not the viewer can see the specific ... Read More

The exif_read_data() function in PHP reads the EXIF (Exchangeable image file format) headers from an image file. This function extracts all the EXIF headers from an image file.SyntaxArray exif_read_data( str $file, str $section=null, bool $arrays=false, bool $thumbnail=false )Parametersexif_read_data() accepts the following four parameters −$file − This parameter is used to specify the location of an image file.$section − This parameter specifies a comma-separated list of sections that need to be present in the file to produce a resultant array.$arrays − This parameter specifies whether or not to present ... Read More

The bindtextdomain() function in PHP is used to set or get the path of a domain.Syntaxstring bindtextdomain($str_domain, $str_directory)Parametersbindtextdomain() accepts two parameters −$str_domain − This is the domain.$str_directory − This is the directory path. If the directory path is NULL, then it will return the currently set directory.Return Valuesbindtextdomain() returns the full specified pathname for the domain which is currently set. It will return False on the failure.ExampleOutputC:\xampp\htdocs

The mb_ereg_search_init() function in PHP is used to setup string and regular expression pattern for a multibyte regular expression match. The values are used for mb_ereg_search_regs, mb_ereg_search_pos, and mb_ereg_search.Syntaxbool mb_ereg_search_init( $str_string, $str_pattern=null, $str_options=null )Parametersmb_ereg_search_init() accepts three parameters −string − This is the search string.pattern − This is the search pattern.options − This is the search option. .Return Valuesmb_ereg_search_init() returns True on success and False on failure.ExampleOutputbool(true) bool(true)

The mb_strcut() function in PHP is used to get a part of a specified string. It extracts the substring from a given string. It operates on bytes instead of characters. If the cut position happens to be between two bytes of multi-byte characters, then the cut is achieved starting from the first byte of those characters.Syntaxstring mb_strcut( $str_string, $int_start, $int_length=null, $str_encoding=null );For example:mb_strcut( string="Onlinetutorial", int= 6, length=5, encoding= "UTF-8" );Parametersmb_strcut() accepts the following four parameters −str_string ... Read More

The mb_strripos() function in PHP is used to search the last existing of a string in another string. This function is not case-sensitive. It performs multi-byte safe strripos() operation based on the number of characters. It returns the specified needle position count from the starting of the haystack string.Syntaxinteger mb_strripos( $str_haystack, $str_needle, $integer_offset=0, $str_encoding )Parametersmb_strripos() accepts the following four parameters −str_haystack − It is the string used to get the position of the last occurrence of the string needle.str_needle − This is used to find the string from ... Read More

The mb_strrichr() function in PHP is used to find the last occurrence of a character in a string within another string. This function is not case-sensitive like mb_strrchr(). This function finds the last occurrence of a needle in the given haystack string and returns that portion of the haystack. It returns false if a needle is not found in the haystack string.Syntaxstring mb_strrichr( $str_haystack, $str_needle, $bool_before_needle=false, $str_encoding )Parametersmb_strrichr() accepts the following four parameters −str_haystack − The string from which to get the last occurrence of the needle.str_needle − ... Read More

The mb_eregi (multibyte regular expression ignore) function in PHP is used to ignore the regular expression match with multibyte support. This function performs the case-insensitive regular expression match with the multibyte support.Syntaxbool mb_eregi( $str_ pattern, $str_string, $arr_matches=null )For example(pattern = "or", string = "Hello World"); Parametersmb_eregi() accepts the following three parameters −pattern − This parameter matches the pattern in the given string.mb_ereg ("or", "Hello World") // "or" is the pattern that will be matched // in the given string "Hello World".string − This parameter is used to search the string.matches − ... Read More