Using multiple keywords in PHP / MySQL search
Posted: Thu May 29, 2008 9:05 am
I've got a search function on my website which works fine, AS LONG as only one word is entered. If you enter more than one word separated by a space, plus sign or ampersand the search fails.
I've added my search code below. Does anyone know how I might be able to make it search for multiple words?
The site can be viewed at http://www.didymus.org.uk/tree.php
Thanks in advance.
Kris.
I've added my search code below. Does anyone know how I might be able to make it search for multiple words?
The site can be viewed at http://www.didymus.org.uk/tree.php
Thanks in advance.
Kris.
Code: Select all
<?php
/* Program: query.php
* Desc: Displays search results.
*/
// Get the search variable from URL
$var = $_GET['q'] ; //search term passed by search.php
$trimmed = trim($var); //trim whitespace from the stored variable
// rows to return
$limit=50;
// check for an empty string and re-direct.
if ($trimmed == "")
{
header("Location: search2.php");
exit;
}
// check for a search parameter
if (!isset($var))
{
header("Location: search2.php");
exit;
}
?>
<html>
<head><title>Individual Biographical Information</title></head>
<body topmargin="0" leftmargin="0" rightmargin="0" bottommargin="0">
<?php
//connect to your database
include_once("*******.inc.php");
mysql_connect("$host","$user","$password"); //(host, username, password)
//specify database
mysql_select_db($database) or die("Unable to select database");
// Build SQL Query
$query = "select * from tree WHERE (surname LIKE \"%$trimmed%\" OR forename LIKE \"%$trimmed%\" OR middlenames LIKE \"%$trimmed%\" OR yearofbirth LIKE \"%$trimmed%\") order by surname,forename"; // EDIT HERE and specify your table and field names for the SQL query
$numresults=mysql_query($query);
$numrows=mysql_num_rows($numresults);
$link = "http://www.didymus.org.uk/display.php?urn=";
$rowht = "valign='top'";
$rowcl = "bgcolor='#CCFFCC' valign='top'";
$text = "font face='Arial' size='1'";
$hltext = "font face='Arial' size='1' color='#000000'";
$nw = "nowrap";
// If we have no results, offer A-Z as alternative.
if ($numrows == 0)
{
echo "<p align='center'><font face='Arial' size='2' color='#00000'>Sorry, your search for <b>"" . $trimmed . ""</b> returned no results.</font></p>";
// google
echo "<p align='center'><font face='Arial' size='2' color='#00000'>Click </font><a href='a-zsn.php'><font face='Arial' size='2' color='#00000'>here</font></a><font face='Arial' size='2' color='#00000'> to try the A-Z index</font></p>";
exit;
}
// next determine if s has been passed to script, if not use 0
if (empty($s)) {
$s=0;
}
// get results
$query .= " limit $s,$limit";
$result = mysql_query ($query) or die(mysql_error());
// display what the person searched for
// begin to show results set
echo "<p align='center'><font face='Arial' size='3'><b>Results</b> for your search for <b>"" . $var . ""</b>";
$count = 1 + $s ;
// now you can display the results returned
echo "<table cellspacing='0' width='450' align='center'>";
echo "<tr><td colspan='4'><hr /></td></tr>";
echo "<tr $rowht><td><$text><b>SURNAME</b></font></td><td><$text><b>FORENAME(S)</b></font></td><td><$text><b>BIRTH YEAR</b></font></td><td><$text><b>VIEW</b></font></td>\n</tr>";
echo "<tr><td colspan='4'><hr /></td></tr>";
/* Display results in a table */
$i=0;
while ($row = mysql_fetch_array($result))
{
extract($row);
$bg = ($i%2) ? $rowht : $rowcl;
echo "<tr $bg><td><$text>$surname</font></td><td><$text>$forename $middlenames</font></td><td><$text>$yearofbirth</font></td><td><a href='$link$urn'><$hltext>VIEW</font></td>\n</tr>";
$i++;
$count++ ;
}
$currPage = (($s/$limit) + 1);
//break before paging
echo "<br />";
// next we need to do the links to other results
if ($s>=1) { // bypass PREV link if s is 0
$prevs=($s-$limit);
print " <a href=\"$PHP_SELF?s=$prevs&q=$var\"><<
Prev 10</a>  ";
}
// calculate number of pages needing links
$pages=intval($numrows/$limit);
// $pages now contains int of pages needed unless there is a remainder from division
if ($numrows%$limit) {
// has remainder so add one page
$pages++;
}
// check to see if last page
if (!((($s+$limit)/$limit)==$pages) && $pages!=1) {
// not last page so give NEXT link
$news=$s+$limit;
echo " <a href=\"$PHP_SELF?s=$news&q=$var\">Next 10 >></a>";
}
$a = $s + ($limit) ;
if ($a > $numrows) { $a = $numrows ; }
$b = $s + 1 ;
echo "<p align='center'>Showing results $b to $a of $numrows</p>";
?>