[Solved] Identify the error in this PHP code snippet:$file = fopen('data.txt', 'r');fwrite($file, 'Test');fclose($file); | PHP

PHP - File Handling

Identify the error in this PHP code snippet:

$file = fopen('data.txt', 'r');
fwrite($file, 'Test');
fclose($file);

AMissing file path

BFile not closed properly

CCannot write to a file opened in 'r' mode

Dfwrite syntax is incorrect

Step-by-Step Solution

Solution:

Step 1: Check file open mode
The file is opened in 'r' mode which is read-only and does not allow writing.
Step 2: Understand fwrite limitation
Calling fwrite on a read-only file causes an error because writing is not permitted.
Final Answer:
Cannot write to a file opened in 'r' mode -> Option C
Quick Check:
Write needs 'w' or 'a' mode [OK]

Quick Trick: Write only works if file opened with 'w' or 'a' [OK]

Common Mistakes:

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