What are the potential pitfalls of using echo and print_r for debugging purposes in PHP?

Using echo and print_r for debugging purposes in PHP can sometimes lead to messy and hard-to-read output, especially when dealing with nested arrays or objects. Additionally, using these functions can accidentally expose sensitive information to users if not handled properly. To solve this issue, it is recommended to use var_dump or print_r with the <pre> HTML tag to format the output in a more readable way. 

// Example of using var_dump with &lt;pre&gt; tag for debugging
echo &#039;&lt;pre&gt;&#039;;
var_dump($variable);
echo &#039;&lt;/pre&gt;&#039;;

Keywords

echo print_r debugging PHP pitfalls

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