[Solved] What is wrong with this PHP code snippet?$file = fopen("output.txt", "a+");fread($file, 100);fwrite($file, "More data");fclose($file); | PHP

PHP - File Handling

What is wrong with this PHP code snippet?

$file = fopen("output.txt", "a+");
fread($file, 100);
fwrite($file, "More data");
fclose($file);

ACannot read and write with "a+" mode

BMissing file open mode

Cfwrite must come before fread

DFile pointer is at the end, so fread reads nothing

Step-by-Step Solution

Solution:

Step 1: Understand "a+" mode pointer position
"a+" opens for reading and writing but pointer starts at file end.
Step 2: Effect on fread
Since pointer is at end, fread reads zero bytes (nothing).
Final Answer:
fread reads nothing because pointer is at file end -> Option D
Quick Check:
"a+" pointer at end, fread reads zero [OK]

Quick Trick: "a+" starts pointer at end; rewind before reading [OK]

Common Mistakes:

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