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

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>echo</H1
><DIV
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><A
NAME="AEN218896"
></A
><P
>    (PHP 3, PHP 4, PHP 5)</P
>echo&nbsp;--&nbsp;Exibe uma ou mais strings</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN218899"
></A
><H2
>Descrição</H2
>void <B
CLASS="methodname"
>echo</B
> ( string arg1 [, string argn...] )<BR
></BR
><P
>&#13;     Exibe todos os parãmetros.
    </P
><P
>&#13;     <B
CLASS="function"
>echo()</B
> não é uma função atualmente
     (construtor da linguagem) então não é obrigatório usar parênteses.
      De fato, se você quer passar mais do que um parâmetro
      para echo, você não deve fechar os parênteses dentro de parênteses.
     </P
><P
>&#13;
     <TABLE
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><P
><B
>Exemplo 1. <B
CLASS="function"
>echo()</B
> exemplos</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">echo </font><font color="#DD0000">"Hello World"</font><font color="#007700">;<br /><br />echo </font><font color="#DD0000">"This spans<br />multiple lines. The newlines will be <br />output as well"</font><font color="#007700">;<br /><br />echo </font><font color="#DD0000">"This spans\nmultiple lines. The newlines will be\noutput as well."</font><font color="#007700">;<br /><br />echo </font><font color="#DD0000">"Escaping characters is done \"Like this\"."</font><font color="#007700">;<br /><br /></font><font color="#FF8000">// You can use variables inside of an echo statement<br /></font><font color="#0000BB">$foo </font><font color="#007700">= </font><font color="#DD0000">"foobar"</font><font color="#007700">;<br /></font><font color="#0000BB">$bar </font><font color="#007700">= </font><font color="#DD0000">"barbaz"</font><font color="#007700">;<br /><br />echo </font><font color="#DD0000">"foo is $foo"</font><font color="#007700">; </font><font color="#FF8000">// foo is foobar<br /><br />// You can also use arrays<br /></font><font color="#0000BB">$bar </font><font color="#007700">= array(</font><font color="#DD0000">"value" </font><font color="#007700">=&gt; </font><font color="#DD0000">"foo"</font><font color="#007700">);<br /><br />echo </font><font color="#DD0000">"this is </font><font color="#007700">{</font><font color="#DD0000">$bar</font><font color="#007700">[</font><font color="#DD0000">'value'</font><font color="#007700">]}</font><font color="#DD0000"> !"</font><font color="#007700">; </font><font color="#FF8000">// this is foo !<br /><br />// Using single quotes will print the variable name, not the value<br /></font><font color="#007700">echo </font><font color="#DD0000">'foo is $foo'</font><font color="#007700">; </font><font color="#FF8000">// foo is $foo<br /><br />// If you are not using any other characters, you can just echo variables<br /></font><font color="#007700">echo </font><font color="#0000BB">$foo</font><font color="#007700">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// foobar<br /></font><font color="#007700">echo </font><font color="#0000BB">$foo</font><font color="#007700">,</font><font color="#0000BB">$bar</font><font color="#007700">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// foobarbarbaz<br /><br />// Some people prefer passing multiple parameters to echo over concatenation.<br /></font><font color="#007700">echo </font><font color="#DD0000">'This '</font><font color="#007700">, </font><font color="#DD0000">'string '</font><font color="#007700">, </font><font color="#DD0000">'was '</font><font color="#007700">, </font><font color="#DD0000">'made '</font><font color="#007700">, </font><font color="#DD0000">'with multiple parameters.'</font><font color="#007700">, </font><font color="#0000BB">chr</font><font color="#007700">(</font><font color="#0000BB">10</font><font color="#007700">);<br />echo </font><font color="#DD0000">'This ' </font><font color="#007700">. </font><font color="#DD0000">'string ' </font><font color="#007700">. </font><font color="#DD0000">'was ' </font><font color="#007700">. </font><font color="#DD0000">'made ' </font><font color="#007700">. </font><font color="#DD0000">'with concatenation.' </font><font color="#007700">. </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /><br />echo &lt;&lt;&lt;END<br /></font><font color="#0000BB">This uses the "here document" syntax to output<br />multiple lines with $variable interpolation. Note<br />that the here document terminator must appear on a<br />line with just a semicolon. no extra whitespace!<br /></font><font color="#007700">END;<br /><br /></font><font color="#FF8000">// Because echo is not a function, following code is invalid. <br /></font><font color="#007700">(</font><font color="#0000BB">$some_var</font><font color="#007700">) ? echo </font><font color="#DD0000">'true' </font><font color="#007700">: echo </font><font color="#DD0000">'false'</font><font color="#007700">;<br /><br /></font><font color="#FF8000">// However, the following examples will work:<br /></font><font color="#007700">(</font><font color="#0000BB">$some_var</font><font color="#007700">) ? print(</font><font color="#DD0000">'true'</font><font color="#007700">): print(</font><font color="#DD0000">'false'</font><font color="#007700">); </font><font color="#FF8000">// print is a function<br /></font><font color="#007700">echo </font><font color="#0000BB">$some_var </font><font color="#007700">? </font><font color="#DD0000">'true'</font><font color="#007700">: </font><font color="#DD0000">'false'</font><font color="#007700">; </font><font color="#FF8000">// changing the statement around<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>
    </P
><P
>&#13;     <B
CLASS="function"
>echo()</B
>  também tem uma sintaxe curta, onde você
     pode seguir imediatamente a tag de abertura com um sinal de igual.  Esta sintaxe curta
     funciona apenas com a configuração 
    <A
HREF="ini.core.html#ini.short-open-tag"
>short_open_tag</A
> habilitada.
     <DIV
CLASS="informalexample"
><P
></P
><A
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><code><font color="#000000">
I have <font color="#0000BB">&lt;?=$foo?&gt;</font> foo.</font>
</code></TD
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><P
></P
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>
    </P
><P
>&#13;     For a short discussion about the differences between 
     <A
HREF="function.print.html"
><B
CLASS="function"
>print()</B
></A
> and <B
CLASS="function"
>echo()</B
>, see this FAQTs
     Knowledge Base Article: <A
HREF="http://www.faqts.com/knowledge_base/view.phtml/aid/1/fid/40"
TARGET="_top"
>http://www.faqts.com/knowledge_base/view.phtml/aid/1/fid/40
     </A
>
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>Este é um
 construtor de linguagem e não uma função, por isso não é possível chamá-lo através de
 <A
HREF="functions.variable-functions.html"
>funções variáveis</A
></P
></BLOCKQUOTE
></DIV
><P
>&#13;     Veja também
     <A
HREF="function.print.html"
><B
CLASS="function"
>print()</B
></A
>,
     <A
HREF="function.printf.html"
><B
CLASS="function"
>printf()</B
></A
>, e
     <A
HREF="function.flush.html"
><B
CLASS="function"
>flush()</B
></A
>.
    </P
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