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07.30.2008 at 06:35AM PDT, ID: 23607232
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9.1

SQL query with Boolean

Asked by jbpeake in MySQL Server, PHP and Databases, SQL Query Syntax

Tags: , ,

Hello experts,

I am learning to create SQL statements and have hit a problem I can't figure out.  The website is www.agteacher.com/search.php and the username is student and the password is student.  In the code I have created you can see that I have figured out how to do a simple query where I count my results for pagination and also search multiple columns looking for matches to the user supplied search string.  Here is where I am getting stuck.

When someone searches for "Breeds of Cattle"  right now they only get back the exact matches for "Breeds of Cattle", I would like for them to also get back "Breeds of Beef Cattle" and "Breeds of Dairy Cattle" etc.  I have been reading the MySQL Development manual on Boolean searches, but I can't seem to make it work for multiple words.  I tried explode(" ", $searchstring) to create an array and I can get the array to print,  but I don't understand how to do a Boolean search across multiple fields using an array.

Getting to where I am now has been tough and I'm not sure what to do next. Start Free Trial 
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echo '<span class=headers>Search Lessons</span>'; 
 
if($session->logged_in){
		
if (isset($_GET['pageno'])) {
   $pageno = $_GET['pageno'];
} else {
   $pageno = 1;
} // if
 
  $searchwords = (isset($_GET['words']) ? htmlspecialchars(stripslashes($_REQUEST['words'])) : ''); 
   
  echo '<form method="get" action="'.$_SERVER['PHP_SELF'].'">'; 
  echo '<input type="text" name="words" size="50" value="'.$searchwords.'" /> '; 
  echo '<input type="submit" value="Search" />'; 
  echo '</form>'; 
 
$searchstring = mysql_real_escape_string($_GET['words']); 
$searcharray = explode(" ", $searchstring) ;
print_r($searcharray);
 
if ($searchstring !== "") {
 
$query = "SELECT count(*) FROM all_lessons WHERE lesson_name like '%$searchstring%' OR keyword like '%$searchstring%' OR author like '%$searchstring%' OR state like '%$searchstring%'";    
$result = mysql_query($query) or die (mysql_error()); 
$query_data = mysql_fetch_row($result);
$numrows = $query_data[0];
}
 
$rows_per_page = 10;
$lastpage      = ceil($numrows/$rows_per_page);
$pageno = (int)$pageno;
if ($pageno > $lastpage) {
   $pageno = $lastpage;
} // if
if ($pageno < 1) {
   $pageno = 1;
} // if
$limit = 'LIMIT ' .($pageno - 1) * $rows_per_page .',' .$rows_per_page;
 
$query = "SELECT * FROM all_lessons WHERE lesson_name like '%$searchstring%' OR keyword like '%$searchstring%' OR author like '%$searchstring%' OR state like '%$searchstring%' ORDER BY id DESC $limit ";
$result = mysql_query($query) or die (mysql_error()); 
if ($searchstring == "") {
echo "<span class=headers>Enter a Search</span>";
}
 
else {
  	echo "<span class='bodytext'>You searched for " . $searchstring . " and found " . $numrows . " item(s)</span><br>" ; 
	   
   while($row = mysql_fetch_object($result))
    { 
 
echo '<br><span class=headers> '.stripslashes(htmlspecialchars($row->lesson_name)) . '</span>&nbsp;<br><span class=bodytext> by ' . ($row->author) . ' of ' . ($row->state) . ' on ' . ($row->today_date) . '</span>';
 
if ($session->isAdmin()) {
	echo "&nbsp;&nbsp;<span class='bodytext'><a href='search.php?id=" . $row->id . "&remove=yes&words=" . $searchstring . "'>delete</a>";
}
	
    $file_size1=round($row->size1/1024);  
    $file_size2=round($row->size2/1024);  
    $file_size3=round($row->size3/1024);  
    $file_size4=round($row->size4/1024);  
    $file_size5=round($row->size5/1024);  
      
if ($row->size1 > "100") {
      echo '<br><span class=bodytext><a href=upload/'.$row->name1. ' target=blank>'.stripslashes(htmlspecialchars($row->item_type1)).'</a> - <span class=bodytext>' . $file_size1 . ' KB</span>'; 
}
if ($row->size2 > "100") {
      echo '<br><span class=bodytext><a href=upload/'.$row->name2. ' target=blank>'.stripslashes(htmlspecialchars($row->item_type2)).'</a> - <span class=bodytext>' . $file_size2 . ' KB</span>'; 
}
if ($row->size3 > "100") {
      echo '<br><span class=bodytext><a href=upload/'.$row->name3. ' target=blank>'.stripslashes(htmlspecialchars($row->item_type3)).'</a> - <span class=bodytext>' . $file_size3 . ' KB</span>'; 
}
if ($row->size4 > "100") {
      echo '<br><span class=bodytext><a href=upload/'.$row->name4. ' target=blank>'.stripslashes(htmlspecialchars($row->item_type4)).'</a> - <span class=bodytext>' . $file_size4 . ' KB</span>'; 
}
if ($row->size5 > "100") {
      echo '<br><span class=bodytext><a href=upload/'.$row->name5. ' target=blank>'.stripslashes(htmlspecialchars($row->item_type5)).'</a> - <span class=bodytext>' . $file_size5 . ' KB</span>'; 
}
      echo '<hr size="1" />'; 
      
} 
} 
echo "<br><br><span class=headers>";
 
if ($pageno == 1) {
   echo " First &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Previous &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
} else {
   echo " <a href='{$_SERVER['PHP_SELF']}?pageno=1&words=$searchwords'>First</a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ";
   $prevpage = $pageno-1;
   echo " <a href='{$_SERVER['PHP_SELF']}?pageno=$prevpage&words=$searchwords'>Previous</a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ";
} // if
 
echo " ( Page $pageno of $lastpage ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
 
if ($pageno == $lastpage) {
   echo " Next &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Last";
} else {
   $nextpage = $pageno+1;
   echo " <a href='{$_SERVER['PHP_SELF']}?pageno=$nextpage&words=$searchwords'>Next &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</a> ";
   echo " <a href='{$_SERVER['PHP_SELF']}?pageno=$lastpage&words=$searchwords'>Last</a> ";
} // if
 
}
else{
	echo "<span class='bodytext'><br><br>You must <a href='register.php'>register</a> and <a href='main.php'>login </a href> to search for lessons.";
}
 
include('footer.php');
?>
[+][-]07.30.2008 at 07:10AM PDT, ID: 22120551

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[+][-]07.30.2008 at 07:10AM PDT, ID: 22120557

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[+][-]07.30.2008 at 07:11AM PDT, ID: 22120570

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[+][-]07.30.2008 at 11:11AM PDT, ID: 22123023

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[+][-]07.30.2008 at 11:16AM PDT, ID: 22123083

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About this solution

Zones: MySQL Server, PHP and Databases, SQL Query Syntax
Tags: sql mysql php, Mozilla Firefox 2.0.0.16, http://www.agteacher.com/search.php username=student password=student
Sign Up Now!
Solution Provided By: virmaior
Participating Experts: 2
Solution Grade: A
 
 
[+][-]07.30.2008 at 12:04PM PDT, ID: 22123578

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

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