Sophie: php-manual-pt_BR-5.2.4-1mdv2008.1 noarch

php-manual-pt_BR-5.2.4-1mdv2008.1.noarch.rpm

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>count_chars</H1
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>    (PHP 4, PHP 5)</P
>count_chars&nbsp;--&nbsp;
     Retorna informações sobre os caracteres usados numa string
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>Descrição</H2
>mixed <B
CLASS="methodname"
>count_chars</B
> ( string string [, int mode] )<BR
></BR
><P
>&#13;     Conta o número de ocorrências de cada byte-value (0..255) na
     <CODE
CLASS="parameter"
>string</CODE
> e retorna ela de várias maneiras.
     O parâmetro original <CODE
CLASS="parameter"
>Mode</CODE
> por definição
     0. A depender do <CODE
CLASS="parameter"
>mode</CODE
>
     <B
CLASS="function"
>count_chars()</B
> pode retornar os seguintes:
     <P
></P
><UL
><LI
><P
>&#13;        0 - Um array com um byte-value como chave e a freqüência 
        de cada byte como valor.
       </P
></LI
><LI
><P
>&#13;        1 - mesmo que o 0 mas apenas byte-values com freqüência maior do que 0 são listadas.
       </P
></LI
><LI
><P
>&#13;        2 - mesmo que 0 mas apenas byte-values com freqüência igual a 0 são listadas.
       </P
></LI
><LI
><P
> 
        3 - uma string contendo todos os byte-values usados é retornada.
       </P
></LI
><LI
><P
> 
        4 - uma string contendo todos os byte-values que não foram usados é retornada.
       </P
></LI
></UL
>
      </P
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><B
>Exemplo 1. Exemplo <B
CLASS="function"
>count_chars()</B
></B
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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 />&nbsp;&nbsp;&nbsp;}<br /><br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>&#13;       Isto irá mostrar:
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>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
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>
    </P
><P
>&#13;    Veja também <A
HREF="function.strpos.html"
><B
CLASS="function"
>strpos()</B
></A
> e
     <A
HREF="function.substr-count.html"
><B
CLASS="function"
>substr_count()</B
></A
>.
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