There are two special characters you need to escape in a single-quote string: the single quote (') and the back slash (\). Here is a PHP script example of single-quoted strings:<?php echo 'Hello world!'; echo 'It\'s Friday!'; echo '\\ represents an operator.'; ?>This script will print:Hello world!It's Friday!\ represents an operator. PHP
Topic: String
How Many Escape Sequences Are Recognized in Single-Quoted Strings?
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