PHP:HTML Do Pre-filled form values get overriden?

If in a form i set

开发者_高级运维<input type = 'text' name = 'entry' value ='default_text'/>

And a user enters 'foo' in place of 'default_text' is this enough to make $_POST['entry'] become 'foo' instead of 'default_text'?

If not how do i make that happen?

If someone enters text into this input:

<input type = 'text' name = 'entry' value ='default_text'/>

PHP will receive the new text in $_POST/$_GET/$_REQUEST etc. and not the default (so, to answer your question, yes that is enough).

Yes, if the <input type="text" /> element is placed within a <form method="post"> element which also contains an <input type="submit" /> element to send the data:

<form method="post" action="/url/where/form/will/be/sent.php">
    <input type = 'text' name = 'entry' value ='default_text'/>
    <input type = 'submit' />
</form>

Of course, data will only be sent when the form is submitted. What happened wrong in your code?