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

PHP - File Handling

Identify the error in this PHP code snippet for writing to a file:

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

Afwrite() function is misspelled.

BUsing 'r' mode prevents writing to the file.

Cfclose() should be called before fwrite().

DThe filename must be an absolute path.

Step-by-Step Solution

Solution:

Step 1: Check file open mode
The file is opened with mode 'r' which is read-only and does not allow writing.
Step 2: Understand fwrite() requirements
To write, the file must be opened with 'w', 'a', or 'r+' modes. Using 'r' causes an error on fwrite.
Final Answer:
Using 'r' mode prevents writing to the file. -> Option B
Quick Check:
Write needs 'w' or 'a' mode, not 'r' [OK]

Quick Trick: Open file with write mode to use fwrite() [OK]

Common Mistakes:

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