将PHP变量插入Html5“Placeholder”属性

Question

I tried the following, and it shows an empty text area, the value isn't displayed:

    <input type="textarea" class="class1" name="name1" placeholder="<?= $val1?>" /> 

Any thoughts on what should be done so it will work?

Update: It is now working, the value was empty, therefore text area didn't show anything. The code can be used safely.

Answer 1

Make sure that $val1 actually contains a non-empty value. If it does, your code should create a non-empty placeholder attribute.