mysql_db_query

(PHP 4, PHP 5, PECL mysql:1.0)

mysql_db_query — Send a MySQL query

Description

resource mysql_db_query ( string $database , string $query [, resource $link_identifier ] )

mysql_db_query() selects a database, and executes a query on it.

Parameters

database: The name of the database that will be selected.
query: The MySQL query.
link_identifier: The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() was called with no arguments. If by chance no connection is found or established, an E_WARNING level error is generated.

Return Values

Returns a positive MySQL result resource to the query result, or FALSE on error. The function also returns TRUE/FALSE for INSERT/UPDATE/DELETE queries to indicate success/failure.

ChangeLog

Version	Description
4.0.6	This function is deprecated, do not use this function. Use mysql_select_db() and mysql_query() instead.

Examples

Example #1 mysql_db_query() alternative example


<?php

if (!$link = mysql_connect('mysql_host', 'mysql_user', 'mysql_password')) {
    echo 'Could not connect to mysql';
    exit;
}

if (!mysql_select_db('mysql_dbname', $link)) {
    echo 'Could not select database';
    exit;
}

$sql    = 'SELECT foo FROM bar WHERE id = 42';
$result = mysql_query($sql, $link);

if (!$result) {
    echo "DB Error, could not query the database\n";
    echo 'MySQL Error: ' . mysql_error();
    exit;
}

while ($row = mysql_fetch_assoc($result)) {
    echo $row['foo'];
}

mysql_free_result($result);

?>

Notes

Note: Be aware that this function does NOT switch back to the database you were connected before. In other words, you can't use this function to temporarily run a sql query on another database, you would have to manually switch back. Users are strongly encouraged to use the database.table syntax in their sql queries or mysql_select_db() instead of this function.


<div id="vypis">

  <?php

  if ($_SESSION['vstup']==1)

  {

  $sql="SELECT * from mess WHERE cil='all' OR cil='$nick' OR autor='$nick'";

  $data=mysql_query($sql);  //echo $data;

  while (($pole=mysql_fetch_array($data))!=FALSE)

    {

      $cas=$pole['cas'];

      $autor=$pole['autor'];

      $text=$pole['text'];

      $cil=$pole['cil'];

      $sipka="►";

      echo "<p><span class='fat'>";

      echo $cas."&nbsp;";

      echo $autor;

      if ($cil!="all") {echo $sipka."&nbsp;".$cil.":&nbsp;";}else{echo ":&nbsp;";}

      echo "</span>".$text."&nbsp;";

      echo "</p>";

    }

   } 

  ?> 

 </div>

 

 <div id="panel">

 <p>

 <?php

 $sql="SELECT nick from user_list WHERE status='1'";

 $data=mysql_query($sql);

 while(($pole=mysql_fetch_array($data))!=FALSE)

 {

  echo $pole['nick']."<br />";

 }

 ?>

 </p>

 <form action="/script/logout.php">

 <input type="submit" value="log me out" id="logout">

 </form>

 </div>

 

 <div id="bottomline">

 <form action="/script/write.php" method="get">

 <?php

 echo $nick.":&nbsp;";

 ?>

 <label for="mess">message: &nbsp; </label> <input type="text" name="text" id="mess">

 <label for="seznam"> send to &nbsp;</label>

 <select name="cil" size="1" id="seznam">

 <option value="all">all users

 <?php

 $sql="SELECT nick from user_list WHERE status='1'";

 $data=mysql_query($sql);

  echo "<p>";

 while (($pole=mysql_fetch_array($data))!=FALSE)

 {echo "<option value='".$pole['nick']."'>".$pole['nick']."<br />";}

  echo "</p>";

  $_SESSION['vstup']=1;

 ?>

 </select>

 <input type="submit" value="sen the message" id="subac"><br />

 </form>

add a note

mysql_drop_db

mysql_db_name

Last updated: Fri, 16 May 2008