submit a disabled input in a form could not get value

Disabled fields are not submitted. You can make it readonly or hidden, to get value when submitted.

<input readonly type="text" name="textinput-disabled" id="textinput-disabled" placeholder="Text input" value="<?php echo $info;?>">

Thats expected behaviour.

Instead use

<input readonly type="text"...

Or if you must use disabled for some reason, add a hidden field:

<input disabled="disabled" type="text" name="textinput-disabled" id="textinput-disabled" placeholder="Text input" value="<?php echo $info;?>">
<input type="hidden" name="hidden" value="<?php echo $info;?>">

$name=$_GET['name'];
$type=$_GET['hidden'];
$phone=$_GET['phone'];