Can someone explain me when i echo $rows_affected variable, why i only get 1 when I should be getting 2 based on my db records? More than half an hour trying to figure out this and still cant solve it.. Still noob on PDO.
Any other advices are welcome.
$sql1 = "SELECT title FROM page WHERE id=?";
$stm = $db->prepare($sql1);
$stm->execute(array($id));
$row1 = $stm->fetch(PDO::FETCH_ASSOC);
$sql2 = "SELECT id,title,pg_title FROM page WHERE title=? ORDER BY id ASC";
$stm = $db->prepare($sql2);
$stm->execute(array($row1['title']));
$rows_affected = $stm->fetchColumn();
if (count($rows_affected) > 0) {
for($i=0; $i <= $rows_affected; $i++) {
$row2 = $stm->fetch(PDO::FETCH_ASSOC);
if($row2['id']==$id){
echo '<a href="javascript: void(0)"><b>'.$row2['pg_title'].'</b></a> ';
}else{
echo '<a href="page.php?id='.$row2['id'].'';?><?php if(isset($_GET['edit']) && $_GET['edit']==1){ echo '&edit=1';}?><?php echo'">'.$row2['pg_title'].'</a> ';
}
}
}
Returns a single column from the next row of a result set or FALSE if there are no more rows.
I think you want to use fetchAll()
. Use PDO::FETCH_COLUMN
as the $fetch_style
if you only want the first column. Eg
$rows_affected = $stm->fetchAll(PDO::FETCH_COLUMN, 0);
if you're using MySql you can use rowCount
method.
Or better iterate directly:
$stm->execute(array($row1['title']));
$stm->setFetchMode(\PDO::FETCH_ASSOC);
foreach ($stm as $row2) {
if($row2['id']==$id){
// do your stuff
}
}
Some databases may return the number of rows returned by a SELECT statement. However, this behaviour is not guaranteed for all databases and should not be relied on . Manual You can use COUNT(*)
and fetchColumn()
as in following query to emulate rowCount()
.
$sql2 = "SELECT COUNT(*) FROM page WHERE title=?";
$stm = $db->prepare($sql2);
$stm->execute(array($row1['title']));
// Check the number of rows that match the SELECT statement
if($sql2->fetchColumn() == 0) {
echo "No records found";//For Testing
}else{
$sql3 = "SELECT id,title,pg_title FROM page WHERE title=? ORDER BY id ASC";
//Etc
}
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