Which of the following is the correct syntax to check if a file was uploaded without errors using $_FILES?

easy📝 Syntax Q3 of 15

PHP - Superglobals and Web Context

Which of the following is the correct syntax to check if a file was uploaded without errors using $_FILES?

Aif ($_FILES['file']['size'] === 0) {}

Bif ($_FILES['file']['error'] === 0) {}

Cif ($_FILES['file']['tmp_name'] === '') {}

Dif ($_FILES['file']['name'] === null) {}

Step-by-Step Solution

Solution:

Step 1: Understand the 'error' key in $_FILES
The 'error' key holds an integer code; 0 means no error during upload.
Step 2: Check correct syntax for error check
Using strict equality to 0 confirms the file uploaded successfully without errors.
Final Answer:
if ($_FILES['file']['error'] === 0) {} -> Option B
Quick Check:
Error code 0 means success [OK]

Quick Trick: Check 'error' === 0 to confirm successful upload [OK]

Common Mistakes:

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