如何通过在 PHP 中使用 MySql 从第一个下拉菜单中选择来填充三个文本字段

Question

I am working on a website , in which I have to put user details which have user name , address , phone and zip code.

All the details are stored in MySql.

So, in a form , if I click on user name from Drop Down menu, then the three other text fields are automatically filled with the respective data.

Some thing like , If username is selected of id 13, so address and other fields may have something like this, [insert address into field, where name=id13]

something like that, I am not sure how that works.

Note : I want to auto-populate the other three fields knowing the first option. Other three options are stored in Same database as the first option

My Code so far

<!-- START Presonal information -->
<fieldset class="col-md-6">
    <legend>Shipper Data :</legend>

    <!-- Name -->
    <div class="form-group">
        <label class="control-label" >SHIPPER<span class="required-field"></span></label>                               
        <select type="text" name="Shippername" id="Shippername" class="form-control">
            <option value="0">Select</option>
            <?php
                $sql=mysql_query("SELECT * FROM customer");
                while($row=mysql_fetch_array($sql)){
                    echo '<option value="'.$row['Shippername'].'">'.$row['Shippername'].'</option>';
                }
            ?>
        </select>      

        </div>
                                <div class="row" >
                                <div class="col-sm-6 form-group">
                                    <label  class="control-label">ADDRESS<span class="required-field"></span></label>
                                    <input type="text"  name="Shipperaddress" id="Shipperaddress"class="form-control"  autocomplete="off" required>
                                </div>

                                <div class="col-sm-3 form-group">
                                    <label  class="control-label">PHONE</label>
                                    <input type="text" class="form-control" name="Shipperphone" id="Shipperphone" autocomplete="off" required>
                                </div>

                                <div class="col-sm-3 form-group">
                                    <label class="control-label">PIN CODE</i></label>
                                    <input type="text" name="Shippercc" id="Shippercc"class="form-control"  maxlength="20" placeholder="" autocomplete="off" required>
                                </div>
                            </div>  

Answer 1

Check jfiddle in comment

//JQuery

$('#Shippername').change(function() {
    selectedOption = $('option:selected', this);
    $("#Shipperaddress").val( selectedOption.data('address') );
    $("#Shipperphone").val( selectedOption.data('phone') );
    $("#Shippercc").val( selectedOption.data('zipcode') );
});

//php

<select name="Shippername" id="Shippername">
    <option value="0">Select</option>
    <?php 
        $sql=mysql_query("SELECT * FROM customer");
        while($row=mysql_fetch_array($sql)) {
    ?>
            <option value="<?php echo $row['Shippername'];?>" data-address="<?php echo $row['Shipperaddress'] ?>" data-phone="<?php echo $row['Shipperphone'] ?>" data-zipcode="<?php echo $row['Shippercc'] ?>"><?php echo $row['Shippername'];?></option>
    <?php   
        }
    ?>
</select>
<div class="row" >
    <div class="col-sm-6 form-group">
        <label  class="control-label">ADDRESS<span class="required-field"></span></label>
        <input type="text"  name="Shipperaddress" id="Shipperaddress"class="form-control"  autocomplete="off" required>
    </div>
    <div class="col-sm-3 form-group">
        <label  class="control-label">PHONE</label>
        <input type="text" class="form-control" name="Shipperphone" id="Shipperphone" autocomplete="off" required>
    </div>
    <div class="col-sm-3 form-group">
        <label class="control-label">PIN CODE</i></label>
        <input type="text" name="Shippercc" id="Shippercc"class="form-control"  maxlength="20" placeholder="" autocomplete="off" required>
    </div>
</div>

Answer 2

In general, the method you might wish to adopt to achieve your goal might be something like the following semi-pseudo code. Please note that this is not tested so you will likely have to see what happens - the database calls are NOT going to work as they are so you WILL need to tweak that but hopefully it'll give you a good idea how to approach this:

<?php
    @session_start();

    if( $_SERVER['REQUEST_METHOD']=='POST' ){
        /* 
            Process the ajax request here to return data from db
            The returned data is then used by your ajax callback to
            build / populate fields in your form.

            And yes, this should use PDO or prepared statements to avoid
            mailicious users trying to hijack your site ( sql injection )
        */

        $id=$_POST['id'];
        $sql='select * from `customer` where `id`="'.$id.'"';
        $results=$db->query( $sql );
        $json=json_encode( $results );

        /* the json data is used by "cbgetdata(r)" */
        echo $json;


        exit(); 
    }

    /* Include your files and do whatever else needs done */

?>

<html>
    <head>
        <title>Fred Flintstone didn't know how to write code</title>
        <script>
            function getdata(e){

                var http=new XMLHttpRequest();
                var oSel=document.getElementById('betty');
                var id=oSel.options[ oSel.options.selectedIndex ].value;

                var headers={
                    'Accept': "text/html, application/xml, application/json, text/javascript, "+"*"+"/"+"*"+"; charset=utf-8",
                    'Content-type': 'application/x-www-form-urlencoded',
                    'X-Requested-With': 'XMLHttpRequest'
                };

                http.onreadystatechange=function(){
                    if( http.readyState==4 && http.status==200 ) cbgetdata.call( this, http.response );
                };

                http.open( 'POST', document.location.href, true );
                for( header in headers ) http.setRequestHeader( header, headers[ header ] );
                http.send( 'id='+id );
            }
            function cbgetdata( r ){
                /* callback function that does the form field completion etc */ 
                var json=JSON.parse( r );
                alert( json );
            }
        </script>
    </head>
    <body>
        <form name='bert' id='bert'>
            <select id='betty' onchange='getdata(event)'>
                <optgroup label='select a user'>
                    <option value=1>Fred
                    <option value=2>Wilma
                    <option value=3>Barney
                </optgroup>
            </select>

            <input type='text' id='tf1' name='tf1' />
            <input type='text' id='tf2' name='tf2' />
        </form>
    </body>
</html>