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PHP empty() function
PHP empty() function
PHP empty() function checks whether a variable holds some value or not.
Eg
<?php
if(isset($_GET['sub']))
{
if(empty($_GET['n']))
{
echo "fill your name first";
}
else
{
echo "welcome ".$_GET['n'];
}
}
?>
<form>
Enter your name<input type="text" name="n"/>
<input type="submit" name="sub" value="show my name"/>
</form>
Output welcome Rexx Enter your name
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