Помещение значения по умолчанию в <input type = file …>

Заметка:

Ответы и комментарии ниже отражают состояние устаревших браузеров в 2009 году. Теперь вы можете реально установить значение элемента ввода файла динамически / программно с помощью JavaScript в 2017 году.

См. Ответ в этом вопросе для деталей, а также демонстрационную версию:
Как установить значение ввода файла программно (т. Е. При перетаскивании файлов)?

Я хочу обновить таблицу. Следовательно, когда пользователь хочет обновить его, появляется форма вставки, где в полях ввода отображаются значения по умолчанию. Но я не могу загрузить в <input type=file....> .

Вот код:

  <?php session_start(); if(!isset($_SESSION['user'])) { header("Location:index.php"); exit(); } include("./include/dbc.php"); $a=$_REQUEST['apt']; $qry="select * from flats where app_name = '$a'"; $result=mysql_query($qry) or die(mysql_error()); while($res = mysql_fetch_array($result)) { $ai=$res[0]; $an=$res[1]; $bn=$res[2]; $lc=$res[3]; $st=$res[4]; $nf=$res[5]; $ct=$res[6]; $mp=$res[7]; $lm=$res[8]; } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <form id="form1" action="details1.php?ar=<?php echo $a;?>&api=<?php echo $ai;?>" method="post" enctype="multipart/form-data"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Welcome To Prime Properties</title> <link rel="stylesheet" href="style.css" type="text/css"/> </head> <body> <div class="container"> <div class="heading"> <div class="banner"><img src="../images/top.jpg" width="995" height="169" /></div> <!--menu start--> <div> <?php include('include/menu.php');?> </div> <!--menu end--> </div> <div class="main"> <!--left menu start--> <div class="left_menu"> <?php include('include/lm.php');?> </div> <!--left menu end--> <div class="divider"></div> <!--body contant goes here--> <div class="right"> <p> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Enter Your Credentials......</p> <fieldset><p class="first"> <label for="a_name" >Appartment Name:</label> <input type="text" name="a_name" id="a_name" value="<?php echo $an;?>"><br/></input></p> <p> <label for="b_name">Builder Name:</label> <input type="text" name="b_name" id="b_name" value="<?php echo $bn;?>"><br/></input></p> <p> <label for="loc">Location:</label> <select name="loc"> <?php $qry1="select location from location where loc_id='$lc'"; $result1=mysql_query($qry1) or die(mysql_error()); while($res = mysql_fetch_array($result1)){ $op=$res[0]; }?> <option value="<?php echo $lc?>"><?php echo $op;?></option> <option value="1">Maligaon</option> </select><br/></p> <p> <label for="status"> Status:</label> <select name="status"> <?php $qry1="select status from status where st_id='$st'"; $result1=mysql_query($qry1) or die(mysql_error()); while($res = mysql_fetch_array($result1)){ $sts=$res[0]; }?> <option value="<?php echo $st?>"><?php echo $sts;?></option> <option value="1">Ongoing</option> <option value="2">Future</option> <option value="3">Completed</option> </select><br/></p> <p><label for="no_flats">No of Flats:</label> <input type="text" name="no_flats" id="no_flats" value="<?php echo $nf;?>"><br/></input></p> <p><label for="c_time">Completion Time:</label> <?php $ct1=explode(" ", $ct); ?> <select name="month"> <option><?php echo $ct1[0];?></option> <option>January</option> <option>February</option> <option>March</option> </select> <select name="year"> <option><?php echo $ct1[1];?></option> <option>2012</option> <option>2013</option> <option>2014</option> </select> </p> <p><label for="m_pic">Main Picture:</label> <td><img src="images/<?php echo $mp?>" width="100" height="70" /></td> <input type="file" name="photo"><br/></input></p> <p><label for="l_map">Location Map:</label> <td><img src="loc_images/<?php echo $lm?>" width="100" height="70" /></td> <input type="file" name="photo"><br/></input></p> <p class="submit"> <input type="hidden" name="check" value="1"/> <button type="submit" name="submit" >UPDATE</button></p> </fieldset></div> <!--body contant end here --> </div> </body> </html> </form> в  <?php session_start(); if(!isset($_SESSION['user'])) { header("Location:index.php"); exit(); } include("./include/dbc.php"); $a=$_REQUEST['apt']; $qry="select * from flats where app_name = '$a'"; $result=mysql_query($qry) or die(mysql_error()); while($res = mysql_fetch_array($result)) { $ai=$res[0]; $an=$res[1]; $bn=$res[2]; $lc=$res[3]; $st=$res[4]; $nf=$res[5]; $ct=$res[6]; $mp=$res[7]; $lm=$res[8]; } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <form id="form1" action="details1.php?ar=<?php echo $a;?>&api=<?php echo $ai;?>" method="post" enctype="multipart/form-data"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Welcome To Prime Properties</title> <link rel="stylesheet" href="style.css" type="text/css"/> </head> <body> <div class="container"> <div class="heading"> <div class="banner"><img src="../images/top.jpg" width="995" height="169" /></div> <!--menu start--> <div> <?php include('include/menu.php');?> </div> <!--menu end--> </div> <div class="main"> <!--left menu start--> <div class="left_menu"> <?php include('include/lm.php');?> </div> <!--left menu end--> <div class="divider"></div> <!--body contant goes here--> <div class="right"> <p> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Enter Your Credentials......</p> <fieldset><p class="first"> <label for="a_name" >Appartment Name:</label> <input type="text" name="a_name" id="a_name" value="<?php echo $an;?>"><br/></input></p> <p> <label for="b_name">Builder Name:</label> <input type="text" name="b_name" id="b_name" value="<?php echo $bn;?>"><br/></input></p> <p> <label for="loc">Location:</label> <select name="loc"> <?php $qry1="select location from location where loc_id='$lc'"; $result1=mysql_query($qry1) or die(mysql_error()); while($res = mysql_fetch_array($result1)){ $op=$res[0]; }?> <option value="<?php echo $lc?>"><?php echo $op;?></option> <option value="1">Maligaon</option> </select><br/></p> <p> <label for="status"> Status:</label> <select name="status"> <?php $qry1="select status from status where st_id='$st'"; $result1=mysql_query($qry1) or die(mysql_error()); while($res = mysql_fetch_array($result1)){ $sts=$res[0]; }?> <option value="<?php echo $st?>"><?php echo $sts;?></option> <option value="1">Ongoing</option> <option value="2">Future</option> <option value="3">Completed</option> </select><br/></p> <p><label for="no_flats">No of Flats:</label> <input type="text" name="no_flats" id="no_flats" value="<?php echo $nf;?>"><br/></input></p> <p><label for="c_time">Completion Time:</label> <?php $ct1=explode(" ", $ct); ?> <select name="month"> <option><?php echo $ct1[0];?></option> <option>January</option> <option>February</option> <option>March</option> </select> <select name="year"> <option><?php echo $ct1[1];?></option> <option>2012</option> <option>2013</option> <option>2014</option> </select> </p> <p><label for="m_pic">Main Picture:</label> <td><img src="images/<?php echo $mp?>" width="100" height="70" /></td> <input type="file" name="photo"><br/></input></p> <p><label for="l_map">Location Map:</label> <td><img src="loc_images/<?php echo $lm?>" width="100" height="70" /></td> <input type="file" name="photo"><br/></input></p> <p class="submit"> <input type="hidden" name="check" value="1"/> <button type="submit" name="submit" >UPDATE</button></p> </fieldset></div> <!--body contant end here --> </div> </body> </html> </form> в  <?php session_start(); if(!isset($_SESSION['user'])) { header("Location:index.php"); exit(); } include("./include/dbc.php"); $a=$_REQUEST['apt']; $qry="select * from flats where app_name = '$a'"; $result=mysql_query($qry) or die(mysql_error()); while($res = mysql_fetch_array($result)) { $ai=$res[0]; $an=$res[1]; $bn=$res[2]; $lc=$res[3]; $st=$res[4]; $nf=$res[5]; $ct=$res[6]; $mp=$res[7]; $lm=$res[8]; } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <form id="form1" action="details1.php?ar=<?php echo $a;?>&api=<?php echo $ai;?>" method="post" enctype="multipart/form-data"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Welcome To Prime Properties</title> <link rel="stylesheet" href="style.css" type="text/css"/> </head> <body> <div class="container"> <div class="heading"> <div class="banner"><img src="../images/top.jpg" width="995" height="169" /></div> <!--menu start--> <div> <?php include('include/menu.php');?> </div> <!--menu end--> </div> <div class="main"> <!--left menu start--> <div class="left_menu"> <?php include('include/lm.php');?> </div> <!--left menu end--> <div class="divider"></div> <!--body contant goes here--> <div class="right"> <p> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Enter Your Credentials......</p> <fieldset><p class="first"> <label for="a_name" >Appartment Name:</label> <input type="text" name="a_name" id="a_name" value="<?php echo $an;?>"><br/></input></p> <p> <label for="b_name">Builder Name:</label> <input type="text" name="b_name" id="b_name" value="<?php echo $bn;?>"><br/></input></p> <p> <label for="loc">Location:</label> <select name="loc"> <?php $qry1="select location from location where loc_id='$lc'"; $result1=mysql_query($qry1) or die(mysql_error()); while($res = mysql_fetch_array($result1)){ $op=$res[0]; }?> <option value="<?php echo $lc?>"><?php echo $op;?></option> <option value="1">Maligaon</option> </select><br/></p> <p> <label for="status"> Status:</label> <select name="status"> <?php $qry1="select status from status where st_id='$st'"; $result1=mysql_query($qry1) or die(mysql_error()); while($res = mysql_fetch_array($result1)){ $sts=$res[0]; }?> <option value="<?php echo $st?>"><?php echo $sts;?></option> <option value="1">Ongoing</option> <option value="2">Future</option> <option value="3">Completed</option> </select><br/></p> <p><label for="no_flats">No of Flats:</label> <input type="text" name="no_flats" id="no_flats" value="<?php echo $nf;?>"><br/></input></p> <p><label for="c_time">Completion Time:</label> <?php $ct1=explode(" ", $ct); ?> <select name="month"> <option><?php echo $ct1[0];?></option> <option>January</option> <option>February</option> <option>March</option> </select> <select name="year"> <option><?php echo $ct1[1];?></option> <option>2012</option> <option>2013</option> <option>2014</option> </select> </p> <p><label for="m_pic">Main Picture:</label> <td><img src="images/<?php echo $mp?>" width="100" height="70" /></td> <input type="file" name="photo"><br/></input></p> <p><label for="l_map">Location Map:</label> <td><img src="loc_images/<?php echo $lm?>" width="100" height="70" /></td> <input type="file" name="photo"><br/></input></p> <p class="submit"> <input type="hidden" name="check" value="1"/> <button type="submit" name="submit" >UPDATE</button></p> </fieldset></div> <!--body contant end here --> </div> </body> </html> </form> 

Что я должен делать?

По соображениям безопасности значение элемента <input type=file> может быть изменено только пользователем. Невозможно изменить значение с помощью JavaScript или HTML.