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authorrvelices <rv-github@modusoptimus.com>2014-02-11 21:47:44 +0000
committerrvelices <rv-github@modusoptimus.com>2014-02-11 21:47:44 +0000
commit2d9887993cc2c5dbbc22106c07906220bf33836f (patch)
treec9b07b57c5ab93d8be9356105e317c051267e8c4 /include/dblayer/functions_mysqli.inc.php
parent78621a34878093fe2fed7bcf76ac61aca9acb249 (diff)
arrayfromquery optimizations: move double if from inside loop to outside + use directly mysqli calls to avoid function call overhead for every row retrieved from db
git-svn-id: http://piwigo.org/svn/trunk@27336 68402e56-0260-453c-a942-63ccdbb3a9ee
Diffstat (limited to 'include/dblayer/functions_mysqli.inc.php')
-rw-r--r--include/dblayer/functions_mysqli.inc.php70
1 files changed, 70 insertions, 0 deletions
diff --git a/include/dblayer/functions_mysqli.inc.php b/include/dblayer/functions_mysqli.inc.php
index 41ada251d..31bf9abf3 100644
--- a/include/dblayer/functions_mysqli.inc.php
+++ b/include/dblayer/functions_mysqli.inc.php
@@ -799,4 +799,74 @@ function my_error($header, $die)
echo("</pre>");
}
+/**
+ * Builds an data array from a SQL query.
+ * Depending on $key_name and $value_name it can return :
+ *
+ * - an array of arrays of all fields (key=null, value=null)
+ * array(
+ * array('id'=>1, 'name'=>'DSC8956', ...),
+ * array('id'=>2, 'name'=>'DSC8957', ...),
+ * ...
+ * )
+ *
+ * - an array of a single field (key=null, value='...')
+ * array('DSC8956', 'DSC8957', ...)
+ *
+ * - an associative array of array of all fields (key='...', value=null)
+ * array(
+ * 'DSC8956' => array('id'=>1, 'name'=>'DSC8956', ...),
+ * 'DSC8957' => array('id'=>2, 'name'=>'DSC8957', ...),
+ * ...
+ * )
+ *
+ * - an associative array of a single field (key='...', value='...')
+ * array(
+ * 'DSC8956' => 1,
+ * 'DSC8957' => 2,
+ * ...
+ * )
+ *
+ * @since 2.6
+ *
+ * @param string $query
+ * @param string $key_name
+ * @param string $value_name
+ * @return array
+ */
+function query2array($query, $key_name=null, $value_name=null)
+{
+ $result = pwg_query($query);
+ $data = array();
+
+ if (isset($key_name))
+ {
+ if (isset($value_name))
+ {
+ while ($row = $result->fetch_assoc())
+ $data[ $row[$key_name] ] = $row[$value_name];
+ }
+ else
+ {
+ while ($row = $result->fetch_assoc())
+ $data[ $row[$key_name] ] = $row;
+ }
+ }
+ else
+ {
+ if (isset($value_name))
+ {
+ while ($row = $result->fetch_assoc())
+ $data[] = $row[$value_name];
+ }
+ else
+ {
+ while ($row = $result->fetch_assoc())
+ $data[] = $row;
+ }
+ }
+
+ return $data;
+}
+
?> \ No newline at end of file