: Uncaught Error: Using $this when not in object context array code example

Example: : Uncaught Error: Using $this when not in object context array

# $this for a function which is not a method of any class.
#Remove $this

# Instead of:
$test = $this->compareFiles($file1,$file2,true);

# Use:
$test = compareFiles($file1,$file2,true);