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Core Function
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wp_unique_filename()

wp_unique_filename( mixed $dir, mixed $filename, mixed $unique_filename_callback = null )

Gets a filename that is sanitized and unique for the given directory.

Parameters 2 required

Name / Type Description
$dir
string

Directory.

Required
$filename
string

File name.

Required
$unique_filename_callback
callable

Callback. Default null.

Return Value

(string)
New filename, if given wasn't unique.

Function Information

Since Version
2.5.0
Source File
wp-includes/functions.php
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