用图像替换MySQL文本字段中的标记

Question

Brand new to PHP and MySQL and have been trying to figure out how to replace a tag (i.e. [image:1]) in a blog post's text field with the correct image. I have the ability now (thanks to some pointers in the right direction) to place the correct pictures with the correct posts, but I would like to actually drop them into the text based on where I put the tag in the post itself. For instance, right now I can echo the picture before I echo the $row['post'] itself, but I can't figure out how to program the php to actually look through the $row['post'], find the [image:1], echo the picture with that id there, and then continue echoing the rest of the post. Does that make sense?

Answer 1

If you have the image tag in a variable $image_tag, and if your post body is contained in $row['post'], your logic should look something like:

 $body_text = str_replace ( "[image:1]", $image_tag, $row['post']);
 echo $body_text;

So basically, instead of first dumping the image and then the body text, first replace your image placeholder with the corresponding image tag before writing it out.