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POFatal Error while calling MySQL stored function from PHP using MySQLi
 

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  1. POFatal Error while calling MySQL stored function from PHP using MySQLi
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    <p>Server details:<br> PHP v5.3.5<br> Using MySQLi library client api version: mysqlnd 5.0.7-dev - 091210 - $Revision: 304625 $<br> MySQL Server v5.5.9 </p> <p>I have a stored function in MySQL called f_get_owner_locations( _in int ). It constructs a text variable that holds the locations of whichever condos a specific owner owns. If I run a </p> <pre><code>SELECT f_get_owner_locations( 3 ); </code></pre> <p>from the MySQL command line, it does what it's supposed to do and returns one row:</p> <pre><code>+----------------------------+ | f_get_owner_locations( 3 ) | +----------------------------+ | A-01 | +----------------------------+ </code></pre> <p>However, whenever I try and run it through PHP using the MySQLi library as such:</p> <pre><code>$sql = "SELECT f_get_owner_locations( 3 )"; $location = $GLOBALS['db']-&gt;fetch( $sql ); </code></pre> <p>I get this error: </p> <pre><code>Fatal error: Call to a member function fetch_field() on a non-object in ~/kernel/Database.php on line 328 </code></pre> <p>That line refers to this:</p> <pre><code>/** * Binds results from a returning SQL statement to an array we can * loop through. * * @param $statement Statement object we're binding from. * @return Array of values being returned. * @since 0.1 */ private final function _bindResult( $statement ) { $results = NULL; $bind = array( ); //Get the result set, so we can loop through the fields. $result = $statement-&gt;result_metadata( ); //Loop through the fields and get a reference to each. while( $column = $result-&gt;fetch_field() ) //&lt;=&lt;=&lt;=LINE 328 $bind[] = &amp;$results[$column-&gt;name]; //Do the actual binding. call_user_func_array( array( $statement, 'bind_result'), $bind ); //Free the memory since we already have the result. $result-&gt;free_result(); return $results; } //_bindResult </code></pre> <p>Keep in mind it doesn't fail when the SQL statement doesn't involve a function call. i.e. This works:</p> <pre><code>$sql = "SELECT `id` FROM `owners`"; $owners = $GLOBALS['db']-&gt;fetch( $sql ); </code></pre> <p>But as soon as I add in the need to get the condos they own into it (and this statement works through the MySQL command line as well):</p> <pre><code>$sql = "SELECT `id`, f_get_owner_locations(`id`) FROM `owners`"; $owners = $GLOBALS['db']-&gt;fetch( $sql ); </code></pre> <p>It gives me that error about call to a member function on a non-object.</p> <p>I'm stumped. Doing a var_dump on $result right before the while loops, in my _bindResults method gives me 1 proper dump, and then stops and that error is there.</p> <pre><code>object(mysqli_result)#11 (5) { ["current_field"]=&gt; int(1) ["field_count"]=&gt; int(1) ["lengths"]=&gt; NULL ["num_rows"]=&gt; int(0) ["type"]=&gt; int(1) } </code></pre> <p>Note: The call to f_get_owner_locations is the 2nd field on that select list, so it's not storing the right field count, despite saying that it needs to loop to the correct amount of fields.</p> <p>Any suggestions to get around this little road block or a confirmation that this is a bug within the MySQLi library or a problem with my binding code would be much appreciated.</p> <p>UPDATE: The following code:</p> <pre><code>mysql_connect( ... ); mysql_query( "select f_get_owner_locations(3)" ); die( mysql_error() ); </code></pre> <p>Gave me this output:</p> <pre><code>FUNCTION f_get_owner_locations does not exist. </code></pre> <p>I'm more wondering if this is just a failure on PHP/MySQLi's part than mine?</p> <p>UPDATE 2:<br> As requested, the code used to create the function: </p> <pre><code>drop function if exists f_get_owner_locations; delimiter | create function f_get_owner_locations( _in int ) returns text deterministic begin declare _output text default ""; declare _location varchar(255); declare _count int default 0; declare _done int default 0; declare _cursor cursor for select condos.location from owners left join condo_owners on owners.id = condo_owners.owner left join condos on condo_owners.condo = condos.id where owners.id = _in; declare continue handler for not found set _done = 1; open _cursor; repeat fetch _cursor into _location; set_count = _count + 1; set_output = concat( _output, ", ", _location ); until _done end repeat; set _count = _count - 1; close _cursor; set _output = trim( leading ", " from _output ); set _output = substring( _output from 1 for (_count * 6) ); set _output = trim( trailing ", " from _output ); return _output; end;| delimiter ; </code></pre> <p>Granted with a bit of refactoring that could could be a small bit cleaner, but that's what I used.</p>
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