What are some common issues with outputting specific characters like single quotes in PHP strings?

When outputting specific characters like single quotes in PHP strings, the issue arises because PHP uses single quotes to delimit strings. This can cause conflicts when trying to output a single quote within a string enclosed by single quotes. To solve this issue, you can escape the single quote character using a backslash (\) before the single quote.

// Escaping single quote in PHP string
echo 'I\'m learning PHP!';