PHP - Search A Word With Query Select

Hello,

Does anyone know a tutorial I can follow to create my own search engine over the items I have in my SQL database?
I find a lot of tutorials but they are all 'one word searches' which means if you type two words you will get all results that contain either word (too many hits).

If the search engine tutorial displays result with AJAX even better.

Thanks for help.
df

Hi there,

I'm learning PHP and decided that I'll try to create a word search generator for my own use. I know there are hundreds of them out there but it's just for learning purposes. I'd like to enter a number of words and then the script should generate a pdf containing a box filled with random letters (among which there will be my words). My question is what keywords/functions should I look at to get started? I'm a php beginner but would like to make my learning more interesting by doing this project.

The form with words should be easy, it's the next bit where it's supposed to generate a pdf containing words that I have no idea about.

thank you

I am trying to find the last word before a search pattern.  I tried preg_match without any luck.  I found something close online but it does a match for the first match for the pattern.

I know that I will always see , some # pressure.  I want that # right before the word pressure but there are a lot of , in the page.

Thanks in advance.

Code: [Select]
function get_string_between($string, $start, $end){
$string = " ".$string;
$ini = strpos($string,$start);
if ($ini == 0) return "";
$ini += strlen($start);
$len = strpos($string,$end,$ini) - $ini;
return substr($string,$ini,$len);
}

$fullstring = "today, Sat, 750 pressure";
$parsed = get_string_between($fullstring, ", ", "pressure");

Hey All,
 I'm trying to add multiple word search to my site and I'm getting the following error: "mysql_num_rows(): supplied argument is not a valid MySQL result resource " I know, my search is posting because I'm getting my search terms back with the "nothing found" message I have set up. Here's what I have:
Code: [Select]
  $search = $_POST["search"]; 
  $arraySearch = explode(" ", $search);
  $arrayFields = array(0 => "title", 1 => "content");
  $countSearch = count($arraySearch);
  $a = 0;
  $b = 0;
  $query = "SELECT * FROM table1 WHERE desc LIKE '$arraySearch'";
  $countFields = count($arrayFields);
  while ($a < $countFields)
  {
    while ($b < $countSearch)
    {
      $query = $query."$arrayFields[$a] LIKE '%$arraySearch[$b]%'";
      $b++;
      if ($b < $countSearch)
      {
        $query = $query." AND ";
      }
    }
    $b = 0;
    $a++;
    if ($a < $countFields)
    {
      $query = $query.") OR (";
    }
  }
  $query = $query.")";
  $query_result = mysql_query($query);

 
  if(mysql_num_rows($query_result) < 1)
   {
    echo '<p>No matches found for "'.$search.'"</p>';
  }
  else
  {
   Print "<table border cellpadding=3>";
    while($row = mysql_fetch_assoc($query_result))
    {
      Print "<th>Description:</th> <td>".$row['desc'].  "</td> ";
    }
 Print "</table> ";   
}

You guys are the best, thanks so much.

Hello all,   Based on the suggestion of you wonderful folks here, I went away for a few days (to learn about PDO and Prepared Statements) in order to replace the MySQLi commands in my code. That's gone pretty well thus far...with me having learnt and successfully replaced most of my "bad" code with elegant, SQL-Injection-proof code (or so I hope).   The one-and-only problem I'm having (for now at least) is that I'm having trouble understanding how to execute an UPDATE query within the resultset of a SELECT query (using PDO and prepared statements, of course).   Let me explain (my scenario), and since a picture speaks a thousand words I've also inlcuded a screenshot to show you guys my setup:   In my table I have two columns (which are essentially flags i.e. Y/N), one for "items alreay purchased" and the other for "items to be purchased later". The first flag, if/when set ON (Y) will highlight row(s) in red...and the second flag will highlight row(s) in blue (when set ON).   I initially had four buttons, two each for setting the flags/columns to "Y", and another two to reverse the columns/flags to "N". That was when I had my delete functionality as a separate operation on a separate tab/list item, and that was fine.   Now that I've realized I can include both operations (update and delete) on just the one tab, I've also figured it would be better to pare down those four buttons (into just two), and set them up as a toggle feature i.e. if the value is currently "Y" then the button will set it to "N", and vice versa.   So, looking at my attached picture, if a person selects (using the checkboxes) the first four rows and clicks the first button (labeled "Toggle selected items as Purchased/Not Purchased") then the following must happen:   1. The purchased_flag for rows # 2 and 4 must be switched OFF (set to N)...so they will no longer be highlighted in red. 2. The purchased_flag for row # 3 must be switched ON (set to Y)...so that row will now be highlighted in red. 3. Nothing must be done to rows # 1 and 5 since: a) row 5 was not selected/checked to begin with, and b) row # 1 has its purchase_later_flag set ON (to Y), so it must be skipped over.   Looking at my code below, I'm guessing (and here's where I need the help) that there's something wrong in the code within the section that says "/*** loop through the results/collection of checked items ***/". I've probably made it more complex than it should be, and that's due to the fact that I have no idea what I'm doing (or rather, how I should be doing it), and this has driven me insane for the last 2 days...which prompted me to "throw in the towel" and seek the help of you very helpful and intellegent folks. BTW, I am a newbie at this, so if I could be provided the exact code, that would be most wonderful, and much highly appreciated.   Thanks to you folks, I'm feeling real good (with a great sense of achievement) after having come here and got the great advice to learn PDO and prepared statements.   Just this one nasty little hurdle is stopping me from getting to "end-of-job" on my very first WebApp. BTW, sorry about the long post...this is the best/only way I could clearly explaing my situation.   Cheers guys!

case "update-delete":
	if(isset($_POST['highlight-purchased'])) 
		{
			// ****** Setup customized query to obtain only items that are checked ******
			$sql = "SELECT * FROM shoplist WHERE";
					for($i=0; $i < count($_POST['checkboxes']); $i++)
						{
							$sql=$sql . " idnumber=" . $_POST['checkboxes'][$i] . " or";
						}
					$sql= rtrim($sql, "or");
											
			$statement = $conn->prepare($sql);
			$statement->execute();
																						
			// *** fetch results for all checked items (1st query) *** //
			$result = $statement->fetchAll();

			$statement->closeCursor();
											
			// Setup query that will change the purchased flag to "N", if it's currently set to "Y"
			$sqlSetToN = "UPDATE shoplist SET purchased = 'N' WHERE purchased = 'Y'";
											
			// Setup query that will change the purchased flag to "Y", if it's currently set to "N", "", or NULL
			$sqlSetToY = "UPDATE shoplist SET purchased = 'Y' WHERE purchased = 'N' OR purchased = '' OR purchased IS NULL";

			$statementSetToN = $conn->prepare($sqlSetToN);
			$statementSetToY = $conn->prepare($sqlSetToY);
											
			/*** loop through the results/collection of checked items ***/
			foreach($result as $row)
				{
					if ($row["purchased"] != "Y")
						{
							// *** fetch one row at a time pertaining to the 2nd query *** //
							$resultSetToY = $statementSetToY->fetch();
															
							foreach($resultSetToY as $row)
								{															
									$statementSetToY->execute();																
								}
						}
					else
						{
							// *** fetch one row at a time pertaining to the 2nd query *** //
							$resultSetToN = $statementSetToN->fetch();
															
							foreach($resultSetToN as $row)
								{															
									$statementSetToN->execute();																
								}
						}
				}
				break;
		}

 CRUD Queston.png   20.68KB   0 downloads