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

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><H1
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>gettype</H1
><DIV
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><A
NAME="AEN93804"
></A
><P
>    (PHP 3, PHP 4 )</P
>gettype&nbsp;--&nbsp;Get the type of a variable</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN93807"
></A
><H2
>Description</H2
>string <B
CLASS="methodname"
>gettype</B
> ( mixed var)<BR
></BR
><P
>&#13;     Returns the type of the PHP variable
     <TT
CLASS="parameter"
><I
>var</I
></TT
>.
    </P
><DIV
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><P
></P
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><TD
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><B
>Warning</B
></TD
></TR
><TR
><TD
ALIGN="LEFT"
><P
>&#13;      Never use <B
CLASS="function"
>gettype()</B
> to test for a certain type,
      since the returned string may be subject to change in a future version.
      In addition, it is slow too, as it involves string comparision .
     </P
><P
>&#13;      Instead, use the <TT
CLASS="literal"
>is_*</TT
> functions.
     </P
></TD
></TR
></TABLE
></DIV
><P
>&#13;     Possibles values for the returned string are:
     <P
></P
><UL
><LI
><P
>"<A
HREF="language.types.boolean.html"
><B
CLASS="type"
>boolean</B
></A
>" (since PHP 4)</P
></LI
><LI
><P
>"<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>"</P
></LI
><LI
><P
>"<A
HREF="language.types.float.html"
><B
CLASS="type"
>double</B
></A
>" (for historical reasons "double" is
       returned in case of a <A
HREF="language.types.float.html"
><B
CLASS="type"
>float</B
></A
>, and not simply
       "float")</P
></LI
><LI
><P
>"<A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
>"</P
></LI
><LI
><P
>"<A
HREF="language.types.array.html"
><B
CLASS="type"
>array</B
></A
>"</P
></LI
><LI
><P
>"<A
HREF="language.types.object.html"
><B
CLASS="type"
>object</B
></A
>"</P
></LI
><LI
><P
>"<A
HREF="language.types.resource.html"
><B
CLASS="type"
>resource</B
></A
>" (since PHP 4)</P
></LI
><LI
><P
>"NULL" (since PHP 4)</P
></LI
><LI
><P
>"user function" (PHP 3 only, deprecated)</P
></LI
><LI
><P
>"unknown type"</P
></LI
></UL
>
    </P
><P
>&#13;     For PHP 4, you should use <A
HREF="function.function-exists.html"
><B
CLASS="function"
>function_exists()</B
></A
> and
     <A
HREF="function.method-exists.html"
><B
CLASS="function"
>method_exists()</B
></A
> to replace the prior usage of
     <B
CLASS="function"
>gettype()</B
> on a function.
    </P
><P
>&#13;     See also
     <A
HREF="function.settype.html"
><B
CLASS="function"
>settype()</B
></A
>,
     <A
HREF="function.is-array.html"
><B
CLASS="function"
>is_array()</B
></A
>,
     <A
HREF="function.is-bool.html"
><B
CLASS="function"
>is_bool()</B
></A
>,
     <A
HREF="function.is-float.html"
><B
CLASS="function"
>is_float()</B
></A
>,
     <A
HREF="function.is-integer.html"
><B
CLASS="function"
>is_integer()</B
></A
>,
     <A
HREF="function.is-null.html"
><B
CLASS="function"
>is_null()</B
></A
>,
     <A
HREF="function.is-numeric.html"
><B
CLASS="function"
>is_numeric()</B
></A
>,
     <A
HREF="function.is-object.html"
><B
CLASS="function"
>is_object()</B
></A
>,
     <A
HREF="function.is-resource.html"
><B
CLASS="function"
>is_resource()</B
></A
>,
     <A
HREF="function.is-scalar.html"
><B
CLASS="function"
>is_scalar()</B
></A
>, and
     <A
HREF="function.is-string.html"
><B
CLASS="function"
>is_string()</B
></A
>.
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