php-steveg Posted June 29, 2006 Share Posted June 29, 2006 What I'm trying to do is create a summarized array from an unsummarized result set from a mysql query. I have a MySQL query that searches for linecards that match a given serial number association. From that sql query I create an array of results. Then I create a new array for purposes of summarizing the results.Once I get my SQL resultset, I can then create an array using mysql_fetch_array. I prefer my values be indexed numerically, so I'm not using Mysql_assoc on the array.$link6_array2 = mysql_fetch_array($link6_result2);$link6_rows2 = mysql_num_rows($link6_result2);echo "link6 rows is $link6_rows2"; /* outputs 3 */echo "count link6 array2 " . count($link6_array2) . " "; /* outputs 2 */!! Curiously, these output different numbers. Is that ok? I think array numbering starts at 0 so they could be considered identical, but I didn't know count() was sensative to that.Ok, here's a snippit.for ($i = 0; $i < $link6_rows2; $i++) { /* Number of results from DB query */ $link6_array2 = mysql_fetch_array($link6_result2); /* Create array from DB query */ if (!$bladearray) { /* if first run through loop, create array bladearray */ $vals = $link6_array2[$i]; /* inserted for troubleshooting. This makes the array() */ /* create syntax below prettier. Extracts numeric index 0 here */ /* echo $vals outputs: ALM */ $bladearray = array ( "$vals" => array("qty" => "1") /* since array didn't exist before, should */ /* set $bladearray[ALM][qty] = 1 */ ); //echo $bladearray[ALM][qty]; /* outputs 1 as it should */ } else { $vals2 = $link6_array2[$i]; // echo $vals2; /* !!! Results in blank output. Nothing regurned??? Why??? */<cut here >This is I think the root of my problem. Once the loop starts over again, something goes haywire. My SQL query returns 3 rows. Each row contains one column. Each row is identical. The result set looks pretty simple:mysql> select shortname from ixiaeval.blade2chs where (chs_sn = '400T-1234');+-----------+| shortname |+-----------+| ALM || ALM || ALM |+-----------+3 rows in set (0.00 sec)So why do I not have a value in my next itteration of the for loop? I had one in the first itteration. I should have one in the second and index $i which is now 1.This is killing me! Thanks for any insight. <remainder of the loop if interested in using it> if (array_key_exists($vals2, $bladearray)) { /* must be 2nd + time through */ /*since first !$bladearray failed */ /*so check if $lin6_ar2[1] exists */ /* if so, increment qty for key at */ /*index $l6_arr[ALM][qty] */ $bladearray[$link6_array2][$i][qty]++; } else { /* create new array since previous key did not exist, must have been something*/ /* other than ALM for $link6_array2[1] */ $vals = $link6_array2[$i]; $bladearray_update = array ( /* create new array of same structure as above */ "$vals" => array("qty" => "1") ); array_merge($bladearray, $bladearray_update); /* Merge new array onto existing array */ } } /* exit loop and start all over with next array index */ Quote Link to comment https://forums.phpfreaks.com/topic/13223-cant-create-and-merge-an-array/ Share on other sites More sharing options...
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