X-Git-Url: https://jasonwoof.com/gitweb/?p=wfpl.git;a=blobdiff_plain;f=db.php;h=428c1bf007bb42f85b5551e0633695985dd2ce0d;hp=2dccfbcef63bafc5699c14e10f8c4e4a93a1f28b;hb=HEAD;hpb=90448b433585ec63832845ae50deb01b4124adc0

diff --git a/db.php b/db.php
index 2dccfbc..428c1bf 100644
--- a/db.php
+++ b/db.php
@@ -276,7 +276,7 @@ function db_get_value($table, $column, $where = '') {
 	$result = db_send_get($table, $column, $where, $args);
 
 	$value = mysqli_fetch_row($result);
-	if($value !== false) {
+	if($value !== NULL) {
 		$value = $value[0];
 	}
 
@@ -466,10 +466,22 @@ function db_reposition_respace($table, $field, $where = '') {
 		return;
 	}
 	$inc = floor(DB_ORD_MAX / ($c + 1));
-	$cur = $inc;
-	foreach($ids as $id) {
-		db_update($table, $field, $cur, 'where id=%i', $id);
-		$cur += $inc;
+	$ord = $inc;
+	$count = count($ids);
+	for ($i = 0; $i < $count; $i += 1000) {
+		$values = [];
+		$j_max = min($count, $i + 1000);
+		for ($j = $i; $j < $j_max; ++$j) {
+			$id = $ids[$j];
+			$values[] = "($id,$ord)";
+			$ord += $inc;
+		}
+		$sql =
+			"insert into $table (id,$field) values "
+			. implode(',', $values)
+			. " on duplicate key update $field=VALUES($field)"
+		;
+		db_send_query($sql);
 	}
 }