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>count_chars</A
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>count_chars -- 
     Return information abouts characters used in a string.
    </DIV
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><H2
>Description</H2
><DIV
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><P
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><CODE
CLASS="FUNCDEF"
>mixed count_chars</CODE
>(string string, 
      
       [<SPAN
CLASS="optional"
>mode</SPAN
>]
      
     );<P
></P
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><P
>&#13;     Counts the number of occurances of every byte-value (0..255) in
     <TT
CLASS="parameter"
><I
>string</I
></TT
> and returns it in various ways.
     The optional parameter <TT
CLASS="parameter"
><I
>Mode</I
></TT
> default to
     0. Depending on <TT
CLASS="parameter"
><I
>mode</I
></TT
>
     <B
CLASS="function"
>count_chars()</B
> returns one of the following:
     <P
></P
><UL
><LI
><P
>&#13;	0 - an array with the byte-value as key and the freqency of
	every byte as value.
       </P
></LI
><LI
><P
>&#13;	1 - same as 0 but only byte-values with a frequency greater
	zero are listed.
       </P
></LI
><LI
><P
>&#13;	2 - same as 0 but only byte-values with a frequency equal to
	zero are listed.  
       </P
></LI
><LI
><P
> 
	3 - a string containing all used byte-values is returned.
       </P
></LI
><LI
><P
> 
	4 - a string containing all not used byte-values is returned.
       </P
></LI
></UL
>
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><B
>Note: </B
>
      This function was added in PHP 4.0.
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