Comparison operators will compare multiple values among themselves on the name. For example, is a variable in
$a the same as
$b? Or bigger? We will make comparisons with these operators.
Let’s show the comparison operators on a table:
|==||Equal||$a == $b|
|===||Equivalent||$a === $b|
|!=||Not equal||$a != $b|
|!==||Not equivalent||$a !== $b|
|<||Smaller||$a < $b|
|>||Bigger||$a > $b|
|<=||Small and equal||$a <= $b|
|>=||Greater than and equal||$a >= $b|
In the comparison operator, the double equal sign, there is a small detail to consider. A double equal sign is used to compare two values, and a single equal sign is used to assign a value. So make sure you don’t make odd equals when you want to use the equals double equals operator.