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

PHP - File Handling

Identify the error in this PHP code snippet:

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

AFile path is invalid

BCannot write to a file opened in read mode

Cfwrite() syntax is incorrect

DMissing fclose() function

Step-by-Step Solution

Solution:

Step 1: Check file open mode
The file is opened in 'r' mode, which is read-only.
Step 2: Understand fwrite limitation
Writing to a file opened in read mode causes an error.
Final Answer:
Cannot write to a file opened in read mode -> Option B
Quick Check:
Write requires write mode, not read [OK]

Quick Trick: Open file in write mode to use fwrite without errors [OK]

Common Mistakes:

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