Sophie: php-manual-ro-0:20051028-1 noarch

php-manual-ro-20051028-1.noarch.rpm

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>count_chars</H1
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><P
>    (PHP 4 , PHP 5)</P
>count_chars&nbsp;--&nbsp;
     Return information about characters used in a string
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><H2
>Description</H2
>mixed <B
CLASS="methodname"
>count_chars</B
> ( string string [, int mode])<BR
></BR
><P
>&#13;     Counts the number of occurrences of every byte-value (0..255) in
     <VAR
CLASS="parameter"
>string</VAR
> and returns it in various ways.
     The optional parameter <VAR
CLASS="parameter"
>mode</VAR
> default to
     0. Depending on <VAR
CLASS="parameter"
>mode</VAR
>
     <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 frequency of
        every byte as value.
       </P
></LI
><LI
><P
>&#13;        1 - same as 0 but only byte-values with a frequency greater
        than 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
>
    </P
><P
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><B
>Exemplu 1. <B
CLASS="function"
>count_chars()</B
> example</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /><br />$data </font><font color="#007700">= </font><font color="#DD0000">"Two Ts and one F."</font><font color="#007700">;<br /><br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">count_chars</font><font color="#007700">(</font><font color="#0000BB">$data</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">);<br /><br />for (</font><font color="#0000BB">$i</font><font color="#007700">=</font><font color="#0000BB">0</font><font color="#007700">; </font><font color="#0000BB">$i </font><font color="#007700">&lt; </font><font color="#0000BB">count</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">); </font><font color="#0000BB">$i</font><font color="#007700">++) {<br />&nbsp;&nbsp;&nbsp;if (</font><font color="#0000BB">$result</font><font color="#007700">[</font><font color="#0000BB">$i</font><font color="#007700">] != </font><font color="#0000BB">0</font><font color="#007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">"There were $result</font><font color="#007700">[</font><font color="#DD0000">$i</font><font color="#007700">]</font><font color="#DD0000"> instance(s) of </font><font color="#007700">\"</font><font color="#DD0000">" </font><font color="#007700">, </font><font color="#0000BB">chr</font><font color="#007700">(</font><font color="#0000BB">$i</font><font color="#007700">) , </font><font color="#DD0000">"\" in the string.\n"</font><font color="#007700">;<br />}<br /><br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><P
>&#13;       This will output :
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><PRE
CLASS="screen"
>There were 4 instance(s) of " " in the string. 
There were 1 instance(s) of "." in the string. 
There were 1 instance(s) of "F" in the string. 
There were 2 instance(s) of "T" in the string. 
There were 1 instance(s) of "a" in the string. 
There were 1 instance(s) of "d" in the string. 
There were 1 instance(s) of "e" in the string. 
There were 2 instance(s) of "n" in the string. 
There were 2 instance(s) of "o" in the string. 
There were 1 instance(s) of "s" in the string. 
There were 1 instance(s) of "w" in the string.</PRE
></TD
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> 
    </P
><P
>&#13;     See also <A
HREF="function.strpos.html"
><B
CLASS="function"
>strpos()</B
></A
> and
     <A
HREF="function.substr-count.html"
><B
CLASS="function"
>substr_count()</B
></A
>.
    </P
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