忽略PHP警告

Question

我有一段PHP代码。当我运行代码时，它工作正常，但出现了一些警告，即-Warning: Cannot modify header information - headers already sent by (output started at /home/fundumob/public_html/app_create/nav_class.php:119) in /home/fundumob/public_html/app_create/profile.php on line 32

我能做什么？，我的代码如下..

 <?php session_start(); error_reporting(E_ALL ^ E_WARNING);?>
 <?php
  //include("local_config.php");
  include("lib/config.php");
  include("nav_class.php");
  $obj=new navig();

  if(isset($_SESSION['user_id']))
  {
  $user_id=$_SESSION['user_id'];
  $pic="select Picture from Profile where user_id=$user_id ";
  $pic_result=mysql_query($pic) or die ("sorry".$pic);
  $count=mysql_num_fields($pic_result);

  if($count==1)
  {

   $rows=mysql_fetch_row($pic_result);

   $_SESSION['picture']=$rows[0];
   $profile_pic=$_SESSION['picture'];

   $photo="profile/".$profile_pic;
    }
   else
   {
    $photo="profile/img.jpg";
   }
   }
   else
   {
   header("location:index.php?er=3");
    }

    ?>

   <div id="templatemo_header_wrapper">

<div id="templatemo_header">

    <div id="site_logo"></div>


      <div id="menu_nav" >
    <ul id="css3menu1" class="topmenu">
    <li class="topfirst"><a href="profile.php?apps=1" style="height:15px;line-
     height:15px;">Dashboard</a></li>
     <li class="topmenu"><a href="#" style="height:15px;line-height:15px;">Profile</a>      
       </li>
  <li class="topmenu"><a href="#" style="height:15px;line-height:15px;">Settings</a>  
   </li>
  <li class="toplast"><a href="#" style="height:15px;line-height:15px;">Prateek    

</ul>
</div>  </div><!-- end of header -->
 </div>

  <div id="tempatemo_content_wrapper">

   <div id="templatemo_content" align="center">

    <div class="recent_projects">

          <div align="right">
           <table width="50%" border="0">
           <tr>
           <td width="85%" height="20" style="border-right:1px solid #D0D0D0;"><div    
         align="right">Welcome&nbsp;&nbsp;&nbsp;<?php echo $_SESSION['fname']."&nbsp;". 
      $_SESSION['lname']; ?></div></td>
           <td width="15%" > <div align="center"><a href="logout.php">Log Out</a></div>
          </td>
           </tr>
           </table>
          </div>

    </div>
  <!--end of recent project-->  

Answer 1

丑陋的代码...

<?php

@session_start();
error_reporting(E_ALL ^ E_WARNING);

//include("local_config.php");
include( 'lib/config.php' );
include( 'nav_class.php' );

$obj = new navig();

if( !isset( $_SESSION['user_id'] ) ){

  if( !headers_sent() )
    header( 'Location: index.php?er=3' );
  echo '<script type="text/javascript">document.location.href="index.php?er=3";</script>';
  die();

}

$photo = 'profile/img.jpg';

if( !isset( $_SESSION['picture'] ) ){

  $user_id = (int) $_SESSION['user_id'];
  $pic = "SELECT Picture FROM Profile WHERE user_id=$user_id";

  if( ( $pic_result = mysql_query( $pic ) ) && mysql_num_rows( $pic_result )==1 ){
    $row = mysql_fetch_row( $pic_result );
    $_SESSION['picture'] = $row[0];
    $photo = 'profile/'.$row[0];
  }

}else{

  $photo = 'profile/'.$_SESSION['picture'];

}

?>

<div id="templatemo_header_wrapper">
  <div id="templatemo_header">
    <div id="site_logo"></div>
    <div id="menu_nav">
      <ul id="css3menu1" class="topmenu">
        <li class="topfirst"><a href="profile.php?apps=1" style="height:15px;line-height:15px;">Dashboard</a></li>
        <li class="topmenu"><a href="#" style="height:15px;line-height:15px;">Profile</a></li>
        <li class="topmenu"><a href="#" style="height:15px;line-height:15px;">Settings</a></li>
        <li class="toplast"><a href="#" style="height:15px;line-height:15px;">Prateek</li>
      </ul>
    </div>
  </div><!-- end of header -->
</div>

<div id="tempatemo_content_wrapper">
  <div id="templatemo_content" align="center">
    <div class="recent_projects">
      <div align="right">
        <table width="50%" border="0">
          <tr>
            <td width="85%" height="20" style="border-right:1px solid #D0D0D0;"><div align="right">Welcome&nbsp;&nbsp;&nbsp;<?php echo $_SESSION['fname'].'&nbsp;'.$_SESSION['lname']; ?></div></td>
            <td width="15%" ><div align="center"><a href="logout.php">Log Out</a></div></td>
          </tr>
        </table>
      </div>
    </div>
    <!--end of recent project-->

...

Answer 2

在脚本开头使用ob_start()，在脚本末尾使用ob_end_flush()。

Reference

Answer 3

我不建议隐藏警告最好是你修复它，你可以用这个来隐藏警告…

error_reporting(E_ERROR | E_PARSE);