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

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Tabelas de comparação de tipo do PHP</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="Manual do PHP"
HREF="index.html"><LINK
REL="UP"
TITLE="Apêndices"
HREF="appendices.html"><LINK
REL="PREVIOUS"
TITLE="Domínio Unix: Unix e UDG"
HREF="transports.unix.html"><LINK
REL="NEXT"
TITLE="List of Parser Tokens"
HREF="tokens.html"><META
HTTP-EQUIV="Content-type"
CONTENT="text/html; charset=UTF-8"></HEAD
><BODY
CLASS="appendix"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>Manual do PHP</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="transports.unix.html"
ACCESSKEY="P"
>Anterior</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="tokens.html"
ACCESSKEY="N"
>Próxima</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="appendix"
><H1
><A
NAME="types.comparisons"
>Apêndice Q. Tabelas de comparação de tipo do PHP</A
></H1
><P
>&#13;  As seguintes tabelas demonstram comportamentos no PHP de
  <A
HREF="language.types.html"
>tipos</A
> e 
  <A
HREF="language.operators.comparison.html"
>operadores de 
  comparação</A
>, tanto para comparação solta e restrita. Esse
  suplemento também se relacionam a seção do manual de 
  <A
HREF="language.types.type-juggling.html"
>type juggling</A
>.
  Inspiração provem de comentários de vários usuários e pelo trabalho na
  <A
HREF="http://www.blueshoes.org/en/developer/php_cheat_sheet/"
TARGET="_top"
>BlueShoes</A
>.
 </P
><P
>&#13;  Antes de utilizar essas tabelas, é importante entender tipos e seus 
  significados. Por exemplo, <TT
CLASS="literal"
>"42"</TT
> é uma <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
> 
  enquanto <TT
CLASS="literal"
>42</TT
> é um inteiro.  <TT
CLASS="constant"
><B
>FALSE</B
></TT
> é um
  <A
HREF="language.types.boolean.html"
><B
CLASS="type"
>boolean</B
></A
> enquanto <TT
CLASS="literal"
>"false"</TT
> é uma
  <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
>.
 </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
   Formulários HTML não passam inteiros, floats ou booleans; Eles passam strings.
   Para descobrir se uma string é numérica, você pode usar
   <A
HREF="function.is-numeric.html"
><B
CLASS="function"
>is_numeric()</B
></A
>.
  </P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
   Simplesmente fazer <TT
CLASS="literal"
>if ($x)</TT
> enquanto <CODE
CLASS="varname"
>$x</CODE
> é
   indefinido causará um error de nível <TT
CLASS="constant"
><B
>E_NOTICE</B
></TT
>.
   Ao invés, considere usar <A
HREF="function.empty.html"
><B
CLASS="function"
>empty()</B
></A
> ou
   <A
HREF="function.isset.html"
><B
CLASS="function"
>isset()</B
></A
> e/ou inicializar suas variáveis.
  </P
></BLOCKQUOTE
></DIV
><P
>&#13;  <DIV
CLASS="table"
><A
NAME="AEN289669"
></A
><P
><B
>Tabela Q-1. Comparações de <CODE
CLASS="varname"
>$x</CODE
> com funções do PHP</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><COL><COL><COL><THEAD
><TR
><TH
>Expression</TH
><TH
><A
HREF="function.gettype.html"
><B
CLASS="function"
>gettype()</B
></A
></TH
><TH
><A
HREF="function.empty.html"
><B
CLASS="function"
>empty()</B
></A
></TH
><TH
><A
HREF="function.is-null.html"
><B
CLASS="function"
>is_null()</B
></A
></TH
><TH
><A
HREF="function.isset.html"
><B
CLASS="function"
>isset()</B
></A
></TH
><TH
><A
HREF="language.types.boolean.html"
><B
CLASS="type"
>boolean</B
></A
> : <TT
CLASS="literal"
>if($x)</TT
></TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="literal"
>$x = "";</TT
></TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = <TT
CLASS="constant"
><B
>NULL</B
></TT
></TT
></TD
><TD
><A
HREF="language.types.null.html"
><B
CLASS="type"
>NULL</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>var $x;</TT
></TD
><TD
><A
HREF="language.types.null.html"
><B
CLASS="type"
>NULL</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><CODE
CLASS="varname"
>$x</CODE
> is undefined</TD
><TD
><A
HREF="language.types.null.html"
><B
CLASS="type"
>NULL</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = array();</TT
></TD
><TD
><A
HREF="language.types.array.html"
><B
CLASS="type"
>array</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = false;</TT
></TD
><TD
><A
HREF="language.types.boolean.html"
><B
CLASS="type"
>boolean</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = true;</TT
></TD
><TD
><A
HREF="language.types.boolean.html"
><B
CLASS="type"
>boolean</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = 1;</TT
></TD
><TD
><A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = 42;</TT
></TD
><TD
><A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = 0;</TT
></TD
><TD
><A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = -1;</TT
></TD
><TD
><A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = "1";</TT
></TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = "0";</TT
></TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = "-1";</TT
></TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = "php";</TT
></TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = "true";</TT
></TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>$x = "false";</TT
></TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
></TBODY
></TABLE
></DIV
>
 </P
><P
>&#13;  <DIV
CLASS="table"
><A
NAME="AEN289911"
></A
><P
><B
>Tabela Q-2. Comparações soltas com <TT
CLASS="literal"
>==</TT
></B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><COL><COL><COL><COL><COL><COL><COL><COL><COL><THEAD
><TR
><TH
>&nbsp;</TH
><TH
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TH
><TH
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TH
><TH
><TT
CLASS="literal"
>1</TT
></TH
><TH
><TT
CLASS="literal"
>0</TT
></TH
><TH
><TT
CLASS="literal"
>-1</TT
></TH
><TH
><TT
CLASS="literal"
>"1"</TT
></TH
><TH
><TT
CLASS="literal"
>"0"</TT
></TH
><TH
><TT
CLASS="literal"
>"-1"</TT
></TH
><TH
><TT
CLASS="constant"
><B
>NULL</B
></TT
></TH
><TH
><TT
CLASS="literal"
>array()</TT
></TH
><TH
><TT
CLASS="literal"
>"php"</TT
></TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>1</TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>0</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>-1</TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>"1"</TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>"0"</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>"-1"</TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>NULL</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>array()</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>"php"</TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
></TBODY
></TABLE
></DIV
>
 </P
><P
>&#13;  <DIV
CLASS="table"
><A
NAME="AEN290217"
></A
><P
><B
>Tabela Q-3. Comparações restritas com <TT
CLASS="literal"
>===</TT
></B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><COL><COL><COL><COL><COL><COL><COL><COL><COL><THEAD
><TR
><TH
>&nbsp;</TH
><TH
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TH
><TH
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TH
><TH
><TT
CLASS="literal"
>1</TT
></TH
><TH
><TT
CLASS="literal"
>0</TT
></TH
><TH
><TT
CLASS="literal"
>-1</TT
></TH
><TH
><TT
CLASS="literal"
>"1"</TT
></TH
><TH
><TT
CLASS="literal"
>"0"</TT
></TH
><TH
><TT
CLASS="literal"
>"-1"</TT
></TH
><TH
><TT
CLASS="constant"
><B
>NULL</B
></TT
></TH
><TH
><TT
CLASS="literal"
>array()</TT
></TH
><TH
><TT
CLASS="literal"
>"php"</TT
></TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>1</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>0</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>-1</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>"1"</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>"0"</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>"-1"</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="constant"
><B
>NULL</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>array()</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
></TR
><TR
><TD
><TT
CLASS="literal"
>"php"</TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>FALSE</B
></TT
></TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
></TD
></TR
></TBODY
></TABLE
></DIV
>
 </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota para o PHP 3.0: </B
>
   O valor string <TT
CLASS="literal"
>"0"</TT
> era considerado não-vazio no
   PHP 3, esse comportamento mudou no PHP 4 onde ele é visto como vazio.
  </P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="transports.unix.html"
ACCESSKEY="P"
>Anterior</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Principal</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="tokens.html"
ACCESSKEY="N"
>Próxima</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Domínio Unix: Unix e UDG</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="appendices.html"
ACCESSKEY="U"
>Acima</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>List of Parser Tokens</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>