mirror_php/moodle
1
0
Fork 0
mirror of https://github.com/moodle/moodle.git synced 2025-04-21 00:12:56 +02:00
Code Issues Projects Releases Wiki Activity

datalib: teach moodle to pull an array from a column

Browse Source 
the new get_fieldset_sql() gets around the nastiness in get_recordset()
that treats the first column as the unique key of the recordset. You can
now request a column from a table, or a set of values as a set of 1 field
records.
This commit is contained in:
martinlanghoff 2006-01-16 03:07:23 +00:00
parent 92ab8e50d4
commit 061fb2e7c3
1 changed files with 40 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
lib/datalib.php
View File

@ -1025,6 +1025,46 @@ function get_field_sql($sql) {
}
}
/**
* Get an array of data from one or more fields from a database
* use to get a column, or a series of distinct values
*
* @uses $CFG
* @uses $db
* @param string $sql The SQL string you wish to be executed.
* @return mixed|false Returns the value return from the SQL statment or false if an error occured.
* @todo Finish documenting this function
*/
function get_fieldset_sql($sql) {
global $db, $CFG;
if (defined('MDL_PERFDB')) { global $PERF ; $PERF->dbqueries++; };
$rs = $db->Execute($sql);
if (!$rs) {
if (isset($CFG->debug) and $CFG->debug > 7) {
notify($db->ErrorMsg() .'<br /><br />'. $sql);
}
if (!empty($CFG->dblogerror)) {
$debug=array_shift(debug_backtrace());
error_log("SQL ".$db->ErrorMsg()." in {$debug['file']} on line {$debug['line']}. STATEMENT: $sql");
}
return false;
}
if ( $rs->RecordCount() > 0 ) {
$results = array();
while (!$rs->EOF) {
array_push($results, $rs->fields[0]);
$rs->MoveNext();
}
return $results;
} else {
return false;
}
}
/**
* Set a single field in a database record
*