Question

Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

_wp_get_attachment_relative_path( string $file )

Get the attachment path relative to the upload directory.

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description

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参数

$file

(string) (Required) Attachment file name.

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返回值

(string) Attachment path relative to the upload directory.

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源代码

File: wp-includes/media.php

function _wp_get_attachment_relative_path( $file ) {
	$dirname = dirname( $file );

	if ( '.' === $dirname ) {
		return '';
	}

	if ( false !== strpos( $dirname, 'wp-content/uploads' ) ) {
		// Get the directory name relative to the upload directory (back compat for pre-2.7 uploads)
		$dirname = substr( $dirname, strpos( $dirname, 'wp-content/uploads' ) + 18 );
		$dirname = ltrim( $dirname, '/' );
	}

	return $dirname;
}

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更新日志

Version	description
4.4.1	Introduced.

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相关函数

Used By

• wp-includes/media.php: wp_calculate_image_srcset()
• wp-includes/post.php: wp_get_attachment_url()

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User Contributed Notes