How to check if a variable is empty in PHP?

The empty() function is an in-built function in PHP which is used to check whether a variable is empty or not.

Example of empty function:

<?php
$var1 = "";
if(empty($var1))
{
echo"Yes, variable is empty";
}
else
{
echo"No, variable is not empty";
}
?>

Here is the list of values, that are returned as an empty

  • “” (an empty string)
  • 0(as an integer)
  • 0.0(o as a float)
  • “0”(o as a string)
  • Null
  • False
  • array() (an empty array)

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