What is the difference between = and == in PHP and how does it relate to variable assignment and comparison?

The difference between = and == in PHP is that = is used for variable assignment, while == is used for comparison. When using =, you are assigning a value to a variable. When using ==, you are comparing two values to see if they are equal. It is important to use the correct operator depending on whether you want to assign a value to a variable or compare two values. 

// Variable assignment
$variable1 = 5;

// Comparison
if ($variable1 == 5) {
    echo "Variable is equal to 5";
}

Keywords

PHP assignment operator comparison operator variable difference

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