Sophie: php-manual-en-4.3.0-2mdk noarch

php-manual-en-4.3.0-2mdk.noarch.rpm

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>Other incompatibilities</TITLE
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>Appendix C. Migrating from PHP/FI 2 to PHP 3</TD
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>Other incompatibilities</H1
><P
></P
><UL
><LI
><P
>&#13;    The PHP 3.0 Apache module no longer supports Apache versions
    prior to 1.2.  Apache 1.2 or later is required.
   </P
></LI
><LI
><P
>&#13;    <A
HREF="function.echo.html"
><B
CLASS="function"
>echo()</B
></A
> no longer supports a format string.
    Use the <A
HREF="function.printf.html"
><B
CLASS="function"
>printf()</B
></A
> function instead.
   </P
></LI
><LI
><P
>&#13;    In PHP/FI 2.0, an implementation side-effect caused
    <TT
CLASS="literal"
>$foo[0]</TT
> to have the same effect as
    <TT
CLASS="literal"
>$foo</TT
>. This is not true for PHP 3.0.
   </P
></LI
><LI
><P
>&#13;     Reading arrays with <TT
CLASS="literal"
>$array[]</TT
> is no longer
     supported
    </P
><P
>&#13;     That is, you cannot traverse an array by having a loop that does
     <TT
CLASS="literal"
>$data = $array[]</TT
>.  Use <A
HREF="function.current.html"
><B
CLASS="function"
>current()</B
></A
>
     and <A
HREF="function.next.html"
><B
CLASS="function"
>next()</B
></A
> instead.
    </P
><P
>&#13;     Also, <TT
CLASS="literal"
>$array1[] = $array2</TT
> does not
     append the values of <TT
CLASS="literal"
>$array2</TT
> to
     <TT
CLASS="literal"
>$array1</TT
>, but appends
     <TT
CLASS="literal"
>$array2</TT
> as the last entry of
     <TT
CLASS="literal"
>$array1</TT
>. See also multidimensional array
     support.
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="literal"
>"+"</TT
> is no longer overloaded as a
     concatenation operator for strings, instead it converts it's
     arguments to numbers and performs numeric addition. Use
     <TT
CLASS="literal"
>"."</TT
> instead.
    </P
></LI
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><DIV
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><A
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></A
><P
><B
>Example C-11. Migration from 2.0: concatenation for strings</B
></P
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><TR
><TD
><PRE
CLASS="php"
>echo "1" + "1";</PRE
></TD
></TR
></TABLE
><P
> 
    In PHP 2.0 this would echo 11, in PHP 3.0 it would
    echo 2. Instead use:
    <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="php"
>echo "1"."1";</PRE
></TD
></TR
></TABLE
>
    <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="php"
>$a = 1;
$b = 1;
echo $a + $b;</PRE
></TD
></TR
></TABLE
>
   </P
><P
>&#13;    This would echo 2 in both PHP 2.0 and 3.0.
    <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="php"
>$a = 1;
$b = 1;
echo $a.$b;</PRE
></TD
></TR
></TABLE
>
    This will echo 11 in PHP 3.0.
   </P
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>Function <TT
CLASS="constant"
><B
>TRUE</B
></TT
>/<TT
CLASS="constant"
><B
>FALSE</B
></TT
> return values</TD
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