Question

Problem with Multiple Photos in WHILE Loop

Asked by: webseth

The loop below is supposed to search 2 different databases for a home photo and return the home photo for each listing. I can't figure out why I may get the same photo 3 or 4 times. What is wrong with this code?

$sql = "SELECT * FROM $public_table ORDER BY MLS_ACCT DESC LIMIT 30";
$result = @mysql_query($sql);
while ($row = @mysql_fetch_array($result)) {
			$SUBDIVISION = $row['SUBDIVISION'];
			$URLIT = urlencode($SUBDIVISION);	   
			$MLS_ACCT = $row['MLS_ACCT'];
			$CITY = $row['CITY'];
 
				$s = "SELECT CONCAT(\"http://path/to/file/folder/\", SUBSTR(C_URL, 45)) as url FROM first_img_db WHERE C_MLS_ACCT = $MLS_ACCT";
				$r = mysql_query($s);
					while($row1 = mysql_fetch_array($r)) {
							$IMAGE = $row1['url'];
					}
 
				$c = "SELECT UDF_PHOTO0 FROM ".$photo_table." WHERE MLS_ACCT = $MLS_ACCT";
				$d = @mysql_query($c);
					while($row1 = @mysql_fetch_array($d)) {
						$UDF_PHOTO0 = $row1['UDF_PHOTO0'];
						$images = $UDF_PHOTO0;
						$arr_images = explode(",",$images);
					}
                               
				if (isset($IMAGE)) {
                                         $IMGURL = $IMAGE;
                               } else  {
					$IMGURL = "http://path/to/file/folder/$arr_images[0]";
				} 
 
/////////////////////////////////////////////////////////COMPILE RESULTS/////////////////////////
} $i++;
                                  
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Asked On
2009-07-27 at 11:38:25ID24603899
Tags

php

,

mysql

Topic

PHP and Databases

Participating Experts
1
Points
500
Comments
5

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Answers

 

by: Ray_PaseurPosted on 2009-07-27 at 13:04:37ID: 24955412

There is nothing that jumps out at me as "wrong" in the code, except possibly the reuse of the variable $row1.  You might try changing that.  If that does not fix it, it is probably a data-dependent error.  Consider using var_dump() to print out the arrays as they are retrieved from the query results set.

 

by: Ray_PaseurPosted on 2009-07-27 at 13:07:29ID: 24955438

One other thought - if there is supposed to be one "canonical" home photo you might want to consider a separate column in the table, just to hold the URL of that photo.

HTH, ~Ray

 

by: websethPosted on 2009-07-27 at 16:04:26ID: 24956731

Unfortunately, I'm unable to alter the data columns. I get a DB  dump from  a remote FTP. :(

 I changed the $row1 variable, but no luck.

Tried var_dump($IMGURL) as well as the others, and $IMGURL is the only field being duplicated.

 

by: websethPosted on 2009-07-27 at 18:54:38ID: 24957377

Got it figured out the best I can. There was some trouble distinguishing which picture to use in the instance where both tables had a photo. Below is what I came up with:

      while ($row = mysql_fetch_array($result)) {
            $SUBDIVISION = $row['SUBDIVISION'];
            if (isset($row['ELEM_SCHOOL'])) {$SCHOOL = $row['ELEM_SCHOOL'];}
            if (isset($row['MIDDLE_SCHOOL'])) {$SCHOOL = $row['MIDDLE_SCHOOL'];}
            if (isset($row['HIGH_SCHOOL'])) {$SCHOOL = $row['HIGH_SCHOOL'];}
            $numberofsub = $row['cnt'];
            $MAX_PRICE = $row['MAX_PRICE'];
            $MIN_PRICE = $row['MIN_PRICE'];
            $MLS_ACCT = $row['MLS_ACCT'];
            $ZIP = $row['ZIP'];
            $CITY = $row['CITY'];
                  $rets = @mysql_query("SELECT CONCAT(\"http://path/to/file\", SUBSTR(C_URL, 45)) as url, COUNT(*) as cnt FROM table WHERE C_MLS_ACCT = $MLS_ACCT");
                        while($a = mysql_fetch_array($rets)) { $rets_cnt = $a['cnt']; if ($rets_cnt > 0) { $IMGURL = $a['url']; } }
                  $ddata = @mysql_query("SELECT UDF_PHOTO0 FROM table WHERE MLS_ACCT = $MLS_ACCT");
                        while($b = @mysql_fetch_array($ddata)) {$UDF_PHOTO0 = $b['UDF_PHOTO0'];}
                  $ddata_array = explode(",",$UDF_PHOTO0);                              
                  if ($rets_cnt <= 0) { if (isset($ddata_array[0])) {$IMGURL = "http://path/to/file/$ddata_array[0]";} else { $IMGURL = "images/toonew.jpg"; } }
                  if (isset($SCHOOL)) {$SUBDIVISION = $SCHOOL;}
            $MAKE_URL = "search_".$city."_".$uvar."_results.php?".$uvarnp."=".urlencode($SUBDIVISION);
            include ('search_engine_lists.php');
      $i++;
      }

Thanks for your help :)

 

by: Ray_PaseurPosted on 2009-07-28 at 04:39:33ID: 24959628

Thanks for the points - I'm glad it's on the right track, ~Ray

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