How to check if a string is empty in PHP

In this tutorial, we are going to learn about how to check if a string is empty or not in PHP.

Checking string is empty

To check if a string is empty or not, we can use the built-in empty() function in PHP.

The empty() function returns true if a string is empty; otherwise it returns false.

Here is an example:

$myString = "";

if (empty($myString)) {
  echo "string is empty";
}else{
  echo "string is not empty";
}

Output:

"string is empty"

Similarly, we can also use the strlen() function to check for an empty string in PHP.

$myString = "";

if (strlen($myString) == 0) {
  echo "string is empty";
}else{
  echo "string is not empty";
}