In this post, This function checks whether a variable is of type float or not.

1. Code:

  <?php
	function checkTheValueIsFloat($var){
		return false !== filter_var($var, FILTER_VALIDATE_FLOAT);
	} 
	var_dump(checkTheValueIsFloat("a"));
	echo "<br>";
	var_dump(checkTheValueIsFloat("1.3"));
?> 

2. Example:

Input:

Input: a
Input: 1.4
Input: 1

Output:

Output: false
Output: true
Output: true