[PHP] variable test

[atu]

Hi,

I'm asking me, what is the difference of the two ifs.

if($x)
   echo $x;

if(!empty($x))
   echo $x;

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Re: [PHP] variable test

[Andrey Hristov]

 
 if($x)
echo $x;

if $x is not defined you will get a warning but that depends on error settings in 
php.ini.
This construction checks whether $x is defined or $x is true.

 
 if(!empty($x))
echo $x;

$x must be defined.
 
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