How to Efficiently Upload Multiple Files in PHP?

Uploading Multiple Files in PHP

Uploading multiple files in PHP is a common requirement, whether for user submissions or internal file management. Understanding the nuances involved is essential for seamless file uploads.

Key Considerations:

Input Element:

• name attribute must be defined as an array, e.g., name="inputName[]".
• Include multiple="multiple" or simply multiple to enable multiple file selection.

PHP Processing:

• Access uploaded files using $_FILES['inputName']['param'][index], where param can be name, tmp_name, etc.
• Check for empty file names and paths in the array, as it may contain empty strings. Use array_filter() to eliminate them.

Example:

HTML:

<input name="upload[]" type="file" multiple>

PHP:

//$files = array_filter($_FILES['upload']['name']); //optional

// Count uploaded files
$total = count($_FILES['upload']['name']);

for( $i=0 ; $i <p>By following these guidelines, you can efficiently upload multiple files in PHP, ensuring reliable file management and data integrity.</p>

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