str_replace（）无法正常工作

Question

I've been having this issue for a few hours, and I can't seem to figure out what it could be.

I currently have an Administration Panel script that allows Admins to post blogs on the main website, and I have a line that is utilizing str_replace();

foreach($_FILES["images"]["tmp_name"] AS $index => $tmpName)
{
     //replace in body
     $Body = str_replace("[" . $index + 1 . "]", "<img src=\"/images/gallery/" . $seoTitle . "/" . $_FILES["images"]["name"][$index] . "\" />", $Body);

Currently, when writing a blog post, I allow images to be uploaded, and while the script is processing each image, it'll replace a tag such as [1] [2] (it's image index + 1) with the actual img tag.

I had the script output the parsed Body and it returned something around

This is body content [<img src="/images/gallery/asdasdasdasd/windows.png">

As you can see, the image has a open bracket right before the image tag starts for an odd reason.

I haven't been able to find a solution for some reason. Has this ever happened to anyone else?

Thanks, Jacob

As Dave commented that the problem could be within another part of the code, the entire POST process is below:

if(isset($_POST["create"]))
{
    $Title = trim($_POST["title"]);
    $Body = trim($_POST["body"]);
    $seoTitle = seo($Title);
    if($Title == "" || $Body == "")
    {
        $Template->assign_var("error", "Dude, fill in all of the fields.");
    }
        else
    {
        if(!empty($_FILES["images"]))
        {
            $allowed_types = array("image/gif", "image/jpeg", "image/jpg", "image/pjpeg", "image/x-png", "image/png");
            $allowed_ext = array("jpg", "jpeg", "gif", "png");
            $photos = array();

            if(!is_dir(ROOT_DIR . "../images/gallery/" . $seoTitle))
                mkdir(ROOT_DIR . "../images/gallery/" . $seoTitle);
            foreach($_FILES["images"]["tmp_name"] AS $index => $tmpName)
            {
                $filedata = explode(".", $_FILES["images"]["name"][$index]);
                $ext = end($filedata);
                if(in_array($ext, $allowed_ext) && in_array($_FILES["images"]["type"][$index], $allowed_types))
                {
                    move_uploaded_file($tmpName, ROOT_DIR . "../images/gallery/" . $seoTitle . "/" . $_FILES["images"]["name"][$index]);
                    //replace photo in body
                    $Body = str_replace("[" . $index + 1 . "]", "<img class=\"blog_photo\" src=\"/images/gallery/" . $seoTitle . "/" . $_FILES["images"]["name"][$index] . "\" />", $Body);
                    $photos[] = $_FILES["images"]["name"][$index];
                }
            }
            $Template->assign_var("error", $Body);
        }
    }
}

Answer 1

use this to findout where is the problem and compare output

print_r($_FILES["images"]["tmp_name"]);
echo "<br />";

foreach($_FILES["images"]["tmp_name"] AS $index => $tmpName)
{
     //replace in body
     $Body = str_replace("[" . $index + 1 . "]", "<img src=\"/images/gallery/" . $seoTitle . "/" . $_FILES["images"]["name"][$index] . "\" />", $Body);

    echo "[" . $index + 1 . "]" . "<br />";
    echo "<img src=\"/images/gallery/" . $seoTitle . "/" . $_FILES["images"]["name"][$index] . "\" />";
}

Answer 2

Evidently, the issue is indeed strange, thought it is made due to parentheses not being used when doing $index + 1.

So changing the code to the following:

$Body = str_replace("[" . ($index + 1) . "]", "<img class=\"blog_photo\" src=\"/images/gallery/" . $seoTitle . "/" . $_FILES["images"]["name"][$index] . "\" />", $Body);

will indeed work.