[Solved] Consider this PHP code snippet:$file = fopen("data.txt", "x");fwrite($file, "Data");fclose($file);echo file_get_contents("data.txt");What will happen if "data.txt" already exists? | PHP

PHP - File Handling

Consider this PHP code snippet:

$file = fopen("data.txt", "x");
fwrite($file, "Data");
fclose($file);
echo file_get_contents("data.txt");

What will happen if "data.txt" already exists?

AAn error occurs because "x" mode fails if file exists

BThe file is overwritten with "Data"

CThe file is opened for appending

DThe file is opened for reading only

Step-by-Step Solution

Solution:

Step 1: Understand "x" mode behavior
"x" mode creates a new file and fails if the file exists.
Step 2: Check what happens if file exists
Since "data.txt" exists, fopen returns false and triggers an error.
Final Answer:
An error occurs because "x" mode fails if file exists -> Option A
Quick Check:
"x" mode = create new only, error if exists [OK]

Quick Trick: "x" fails if file exists, use "w" to overwrite [OK]

Common Mistakes:

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