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<HTML
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><P
> (PHP4 >= 4.0b4)</P
>is_resource --
Finds whether a variable is a resource
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><P
><CODE
><CODE
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>int
<B
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>is_resource</B
>
</CODE
> (mixed
var)</CODE
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> <B
CLASS="function"
>is_resource()</B
> returns true if the variable
given by the <TT
CLASS="parameter"
><I
>var</I
></TT
> parameter is a resource,
otherwise it returns false.
</P
><P
> Resources are things like file or database result handles that
are allocated and freed by internal PHP functions and that may
need some cleanup when they are no longer in use but haven't been
freed by user code.
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