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>LIII. Variable functions</H1
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>Table of Contents</B
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><DT
><A
HREF="function.doubleval.html"
>doubleval</A
> &#8212; Get double value of a variable.</DT
><DT
><A
HREF="function.empty.html"
>empty</A
> &#8212; determine whether a variable is set</DT
><DT
><A
HREF="function.gettype.html"
>gettype</A
> &#8212; Get the type of a variable.</DT
><DT
><A
HREF="function.intval.html"
>intval</A
> &#8212; Get integer value of a variable.</DT
><DT
><A
HREF="function.is-array.html"
>is_array</A
> &#8212; Finds whether a variable is an array.</DT
><DT
><A
HREF="function.is-double.html"
>is_double</A
> &#8212; Finds whether a variable is a double.</DT
><DT
><A
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>is_float</A
> &#8212; Finds whether a variable is a float.</DT
><DT
><A
HREF="function.is-int.html"
>is_int</A
> &#8212; Find whether a variable is an integer.</DT
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>is_integer</A
> &#8212; Find whether a variable is an integer.</DT
><DT
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>is_long</A
> &#8212; Finds whether a variable is an integer.</DT
><DT
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>is_object</A
> &#8212; Finds whether a variable is an object.</DT
><DT
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>is_real</A
> &#8212; Finds whether a variable is a real.</DT
><DT
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>is_string</A
> &#8212; Finds whether a variable is a string.</DT
><DT
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>isset</A
> &#8212; determine whether a variable is set</DT
><DT
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>print_r</A
> &#8212; 
     Prints human-readable information about a variable.
    </DT
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>settype</A
> &#8212; Set the type of a variable.</DT
><DT
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>strval</A
> &#8212; Get string value of a variable.</DT
><DT
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>unset</A
> &#8212; Unset a given variable</DT
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>var_dump</A
> &#8212; 
     Dumps information about a variable.
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