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.

_copy_image_file( string $attachment_id )

Copy an existing image file.

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description

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参数

$attachment_id

(string) (Required) Attachment ID.

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返回值

(string|false) New file path on success, false on failure.

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源代码

File: wp-admin/includes/image.php

function _copy_image_file( $attachment_id ) {
	$dst_file = $src_file = get_attached_file( $attachment_id );
	if ( ! file_exists( $src_file ) )
		$src_file = _load_image_to_edit_path( $attachment_id );

	if ( $src_file ) {
		$dst_file = str_replace( basename( $dst_file ), 'copy-' . basename( $dst_file ), $dst_file );
		$dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), basename( $dst_file ) );

		/*
		 * The directory containing the original file may no longer
		 * exist when using a replication plugin.
		 */
		wp_mkdir_p( dirname( $dst_file ) );

		if ( ! @copy( $src_file, $dst_file ) )
			$dst_file = false;
	} else {
		$dst_file = false;
	}

	return $dst_file;
}

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更新日志

Version	description
3.4.0	Introduced.

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相关函数

Uses

• wp-admin/includes/image.php: _load_image_to_edit_path()
• wp-includes/functions.php: wp_unique_filename()
• wp-includes/functions.php: wp_mkdir_p()
• wp-includes/post.php: get_attached_file()

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Used By

• wp-admin/custom-header.php: Custom_Image_Header::step_3()

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User Contributed Notes