PHP - Output and String Handling
Why do escape sequences like \n and \t only work inside double-quoted strings in PHP and not single-quoted strings?
Why do escape sequences like \n and \t only work inside double-quoted strings in PHP and not single-quoted strings?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand PHP string parsing rules
Single-quoted strings treat most backslashes literally except for escaping single quote and backslash itself.Step 2: Reason why escape sequences don't work in single quotes
Escape sequences like \n and \t are only parsed inside double-quoted strings.Final Answer:
Because single-quoted strings treat backslash literally except for \' and \\ -> Option BQuick Check:
Escape sequences only parsed in double quotes [OK]
Quick Trick: Escape sequences only work in double-quoted strings [OK]
Common Mistakes:
- Thinking single quotes parse escapes
- Believing single quotes are deprecated
- Confusing heredoc with single quotes
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