How can you properly compare values in PHP to avoid assignment mistakes?

When comparing values in PHP, it is important to use the triple equals operator (===) instead of the double equals operator (==) to avoid assignment mistakes. The triple equals operator checks both the value and the data type of the variables being compared, ensuring a more accurate comparison. 

// Incorrect comparison using double equals operator
$value1 = "10";
$value2 = 10;

if ($value1 == $value2) {
    echo "Values are equal";
} else {
    echo "Values are not equal";
}

// Correct comparison using triple equals operator
if ($value1 === $value2) {
    echo "Values are equal";
} else {
    echo "Values are not equal";
}

Keywords

comparison operators strict comparison type coercion === !==

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