count_charsPHP ManualPrevNextcount_charscount_chars -- Return information abouts characters used in a string. Descriptionmixed count_chars(string string, [mode] ); Counts the number of occurances of every byte-value (0..255) in string and returns it in various ways. The optional parameter Mode default to 0. Depending on mode count_chars() returns one of the following: 0 - an array with the byte-value as key and the freqency of every byte as value. 1 - same as 0 but only byte-values with a frequency greater zero are listed. 2 - same as 0 but only byte-values with a frequency equal to zero are listed. 3 - a string containing all used byte-values is returned. 4 - a string containing all not used byte-values is returned. Note: This function was added in PHP 4.0. PrevHomeNextconvert_cyr_stringUpcrypt