The escape operator is the opposite section sign “\”.
Here is an example of the escape operator:
<?php $message = "Fee: 100\$"; echo $message; ?>
Fee: 100$. We used the $ dollar sign with double quotes, but put a reverse sign at the beginning. Therefore, it did not perceive the dollar sign as a variable.
Because we use variables in double quotes, we can also use this operator to avoid the $ dollar sign when writing something containing double quotes in double quotes.
Here is an example:
<?php $message = "Baransel said: \"This is a good example to understand the escape operator.\""; echo $message; ?>
This is a good example for understanding the escape operator, If we used double quotes in double quotes, PHP would give an error. But thanks to the escape operator, we did not receive such an error and expressed ourselves.