stream_preview_image()

发布到浏览器的流图像，以及$ _REQUEST [‘history’]中的排队更改

原型

stream_preview_image( int $post_id )

参数

$post_id (int) (Required)

返回值

(bool)  

源文件

路径：wp-admin/includes/image-edit.php

<?php
...
function stream_preview_image( $post_id ) {
	$post = get_post( $post_id );
	wp_raise_memory_limit( 'admin' );
	$img = wp_get_image_editor( _load_image_to_edit_path( $post_id ) );
	if ( is_wp_error( $img ) ) {
		return false;
	}
	$changes = !empty($_REQUEST['history']) ? json_decode( wp_unslash($_REQUEST['history']) ) : null;
	if ( $changes )
		$img = image_edit_apply_changes( $img, $changes );
	// Scale the image.
	$size = $img->get_size();
	$w = $size['width'];
	$h = $size['height'];
	$ratio = _image_get_preview_ratio( $w, $h );
	$w2 = max ( 1, $w * $ratio );
	$h2 = max ( 1, $h * $ratio );
	if ( is_wp_error( $img->resize( $w2, $h2 ) ) )
		return false;
	return wp_stream_image( $img, $post->post_mime_type, $post_id );
}
...
?>

其他

英文文档：https://developer.wordpress.org/reference/functions/stream_preview_image/