Job interview Questions in PHP

What Are the Special Characters You Need to Escape in Single-Quoted Stings?

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.

Can You Specify the "new line" Character in Single-Quoted Strings?

You can not specify the "new line" character in a single-quoted string. If you don't believe, try this script:

<?php 

echo '\n will not work in single quoted strings.'; 

?>

This script will print:

\n will not work in single quoted strings.

How Many Escape Sequences Are Recognized in Single-Quoted Strings?

There are 2 escape sequences you can use in single-quoted strings:

• \\ - Represents the back slash character.
• \' - Represents the single quote character.

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