When should backslashes be used in PHP when outputting HTML code with echo?

Backslashes should be used in PHP when outputting HTML code with echo to escape special characters like double quotes or backslashes themselves. This is important to prevent syntax errors or unintended behavior in the HTML output. To escape a double quote in HTML, use \" and to escape a backslash, use \\. 

<?php
echo "<p>This is a \"quoted\" text with a backslash \\</p>";
?>

Keywords

backslashes PHP outputting HTML code echo

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