Question

wp_stream_image( WP_Image_Editor $image,  string $mime_type,  int $post_id )

Streams image in WP_Image_Editor to browser.

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description

Provided for backcompat reasons

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参数

$image

(WP_Image_Editor) (Required)

$mime_type

(string) (Required)

$post_id

(int) (Required)

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返回值

(bool)

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源代码

File: wp-admin/includes/image-edit.php

function wp_stream_image( $image, $mime_type, $post_id ) {
	if ( $image instanceof WP_Image_Editor ) {

		/**
		 * Filters the WP_Image_Editor instance for the image to be streamed to the browser.
		 *
		 * @since 3.5.0
		 *
		 * @param WP_Image_Editor $image   WP_Image_Editor instance.
		 * @param int             $post_id Post ID.
		 */
		$image = apply_filters( 'image_editor_save_pre', $image, $post_id );

		if ( is_wp_error( $image->stream( $mime_type ) ) )
			return false;

		return true;
	} else {
		_deprecated_argument( __FUNCTION__, '3.5.0', __( '$image needs to be an WP_Image_Editor object' ) );

		/**
		 * Filters the GD image re源代码 to be streamed to the browser.
		 *
		 * @since 2.9.0
		 * @deprecated 3.5.0 Use image_editor_save_pre instead.
		 *
		 * @param re源代码 $image   Image re源代码 to be streamed.
		 * @param int      $post_id Post ID.
		 */
		$image = apply_filters( 'image_save_pre', $image, $post_id );

		switch ( $mime_type ) {
			case 'image/jpeg':
				header( 'Content-Type: image/jpeg' );
				return imagejpeg( $image, null, 90 );
			case 'image/png':
				header( 'Content-Type: image/png' );
				return imagepng( $image );
			case 'image/gif':
				header( 'Content-Type: image/gif' );
				return imagegif( $image );
			default:
				return false;
		}
	}
}

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相关函数

Uses

• wp-admin/includes/image-edit.php: image_editor_save_pre
• wp-admin/includes/image-edit.php: image_save_pre
• wp-includes/l10n.php: __()
• wp-includes/functions.php: _deprecated_argument()
• wp-includes/plugin.php: apply_filters()
• wp-includes/load.php: is_wp_error()
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Used By

• wp-admin/includes/image-edit.php: stream_preview_image()

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User Contributed Notes