I wonder why I haven't found any solutions for this strange problem.
Sorry if I haven't looked right but I am very desperate and try to fix this as much as I can.
In a recursive function, I collect sql data and store them in an array.
However, when I use print_r for outputting the array values, I get strange values like this:
a."parentMale" = '45273' OR a."parentFemale" = '44871' OR
a."parentMale" = '7625' OR a."parentFemale" = '7481' OR Array OR Array
OR Array OR Array OR a."parentMale" = ...
While my function looks like this:
public function getSelfAndAncestorsShort($id) {
$animalids = array();
if ($id != "")
{
$query = "SELECT a.\"parentMale\" AS sire, a.\"parentFemale\" AS dam
FROM animals a
WHERE a.id = ".$id;
$res = pg_query($query);
while ($row = pg_fetch_object($res))
{
if ($row->sire != "")
$animalids[] = "a.\"parentMale\" = '" .$row->sire ."'";
if ($row->dam != "")
$animalids[] = "a.\"parentFemale\" = '" .$row->dam ."'";
$animalids[] = $this->getSelfAndAncestorsShort($row->sire);
$animalids[] = $this->getSelfAndAncestorsShort($row->dam);
$animalids = implode (" OR ", $animalids);
}
}
return $animalids;
}
I hope someone can help me because I have really no idea.
You function returns an array if $id is empty. Also, you do not check the return of your function before to add into your $animalids array :
public function getSelfAndAncestorsShort($id) {
$animalids = array();
if ($id != "")
{
$query = "SELECT a.\"parentMale\" AS sire, a.\"parentFemale\" AS dam
FROM animals a
WHERE a.id = ".$id;
$res = pg_query($query);
while ($row = pg_fetch_object($res))
{
if ($row->sire != "")
$animalids[] = "a.\"parentMale\" = '" .$row->sire ."'";
if ($row->dam != "")
$animalids[] = "a.\"parentFemale\" = '" .$row->dam ."'";
$val = $this->getSelfAndAncestorsShort($row->sire);
if ($val) $animalids[] = $val; // Check here
$val = $this->getSelfAndAncestorsShort($row->dam);
if ($val) $animalids[] = $val; // Check here
}
}
if (empty($animalids)) return "" ; // Check here
return implode (" OR ", $animalids); // Only implode here
}
Related
To explain my issue, here is a simple code at first:
public function sql($data) {
if (is_array($data)) {
$cells = $data['cells'];
$from = $data['from'];
$where = $data['where'];
$joins = $data['joins'];
$order_by = $data['order_by'];
$o_type = $data['order_by_type'];
$limit = $data['limit'];
/*****************************/
if ($cells == '') { $cells = "*"; }
if ($where != '') { $where = "where ".$where; }
if ($oredr_by != '') { $order_by = "order by ".$order_by." ".$o_type; }
if ($limit != '') { $limit = "limit ".$limit; }
//
$sql = "select ".$cells." from ".$from." ".$joins." ".$where." ".$order_by." ".$limit;
$run = mysqli_query($_SESSION['con'], $sql);
}else{
$run = mysqli_query($_SESSION['con'], $data);
}
}
When I start using this method, I pass a multidimensional array as a parameter, like this:
$sql = $class->sql([ "from" => "table", "order_by" => "id", "order_by_type" => "asc" ]);
/* This will generate and run this query: select * from table order by id asc */
// Notice that I've only used 3 keys, not the all above.
In Apache server, it works OK perfectly when I just use some of the keys of array, but in XAMPP it doesn't because it says that I have to pass all the parameters (cells, from, where, joins, ...) even if they are empty.
Please help me to resolve this, and thanks.
You can use isset to check if an array key is present, then get it's value like.
public function sql($data) {
if (is_array($data)) {
$cells = '';
if(isset($data['cells']) {
$cells = $data['cells'];
}
....
/*****************************/
if ($cells == '') { $cells = "*"; }
if ($where != '') { $where = "where ".$where; }
if ($oredrby != '') { $orderby = "order by ".$orderby." ".$od_type; }
if ($limit != '') { $limit = "limit ".$limit; }
$sql = "select ".$cells." from ".$table." ".$joins." ".$where." ".$orderby." ".$limit;
$run = mysqli_query($_SESSION['con'], $sql);
}else{
$run = mysqli_query($_SESSION['con'], $data);
}
}
Or simply just do error_reporting(1) before calling this function or in your index.php.
The problem is this.
$arr = ["a"];
echo $arr["b"];
You will get an error notice.
Notice: Undefined index: b
If you want to avoid this use it in this way.
$arr = ["a"];
$arr = ["b"] = "";
echo $arr["b"];
Change $from to $table, you have not $table variable
$from = $data['from'];
to
$table = $data['from'];
Also you have spelling mistake biggest spelling mistake which is very difficult to find.orderby and oredrby
i am beginner in php and codeigniter.can anyone make this php programme as a codeigniter format?
if ($user_id > 0){
$follow = array();
$fsql = "select user_id from following
where follower_id='$user_id'";
$fresult = mysql_query($fsql);
while($f = mysql_fetch_object($fresult)){
array_push($follow, $f->user_id);
}
if (count($follow)){
$id_string = implode(',', $follow);
$extra = " and id in ($id_string)";
}else{
return array();
}
if ($user_id > 0)
{
$follow = array();
$qry = "select user_id from following where follower_id='$user_id'";
$res = $this->db->query(qry);
foreach($res->result() as $row)
{
array_push($follow, $row->user_id);
}
if (count($follow))
{
$id_string = implode(',', $follow);
$extra = " and id in ($id_string)";
}
else
{
return array();
}
}
Try this:
if ($user_id > 0){
$follow = array();
$rs = $this->db->select('user_id')->where('follower_id', $user_id)->get('following')->result_array();
if( is_array( $rs ) && count( $rs ) > 0 ){
$follow = array();
foreach( $rs as $key => $each ){
$follow[] = $each['user_id'];
}
}
if (count($follow)){
$id_string = implode(',', $follow);
$extra = " and id in ($id_string)";
}else{
return array();
}
}
This should be done in the model.
Using avtice record you can do it like this
function getFriends($user_id){
return $this->db
->select('user_id')
->where('follower_id',$user_id)
->get('following')
->result_array() // for single object use row_array()
}
Default Set Up
$stream->setTrack (array('cookie'));
Trial
$sql = "SELECT DISTINCT text FROM keywords"; $query = mysql_query($sql) or die($sql . ' - ' . mysql_error());
$keys = array();
while ($row = mysql_fetch_array($query)) {
$keys[] = $row[0];
}$stream->setTrack ($keys);
The default set up takes the written word and places it into an array
The trial set up should retrieve a set of keywords from a mysql table as an array and insert them into the function.
It doesn't work. What's wrong?
public function setTrack($trackWords)
{
$trackWords = ($trackWords === NULL) ? array() : $trackWords;
sort($trackWords); // Non-optimal, but necessary
if ($this->trackWords != $trackWords) {
$this->filterChanged = TRUE;
}
$this->trackWords = $trackWords;
}
I am passing a number of values to a function and then want to create a SQL query to search for these values in a database.
The input for this is drop down boxes which means that the input could be ALL or * which I want to create as a wildcard.
The problem is that you cannot do:
$result = mysql_query("SELECT * FROM table WHERE something1='$something1' AND something2='*'") or die(mysql_error());
I have made a start but cannot figure out the logic loop to make it work. This is what I have so far:
public function search($something1, $something2, $something3, $something4, $something5) {
//create query
$query = "SELECT * FROM users";
if ($something1== null and $something2== null and $something3== null and $something4== null and $something5== null) {
//search all users
break
} else {
//append where
$query = $query . " WHERE ";
if ($something1!= null) {
$query = $query . "something1='$something1'"
}
if ($something2!= null) {
$query = $query . "something2='$something2'"
}
if ($something3!= null) {
$query = $query . "something3='$something3'"
}
if ($something4!= null) {
$query = $query . "something4='$something4'"
}
if ($something5!= null) {
$query = $query . "something5='$something5'"
}
$uuid = uniqid('', true);
$result = mysql_query($query) or die(mysql_error());
}
The problem with this is that it only works in sequence. If someone enters for example something3 first then it wont add the AND in the correct place.
Any help greatly appreciated.
I would do something like this
criteria = null
if ($something1!= null) {
if($criteria != null)
{
$criteria = $criteria . " AND something1='$something1'"
}
else
{
$criteria = $criteria . " something1='$something1'"
}
}
... other criteria
$query = $query . $criteria
try with array.
function search($somethings){
$query = "SELECT * FROM users";
$filters = '';
if(is_array($somethings)){
$i = 0;
foreach($somethings as $key => $value){
$filters .= ($i > 0) ? " AND $key = '$value' " : " $key = '$value'";
$i++;
}
}
$uuid = uniqid('', true);
$query .= $filters;
$result = mysql_query($query) or die(mysql_error());
}
// demo
$som = array(
"something1" => "value1",
"something2" => "value2"
);
search( $som );
Here's an example of dynamically building a WHERE clause. I'm also showing using PDO and query parameters. You should stop using the deprecated mysql API and start using PDO.
public function search($something1, $something2, $something3, $something4, $something5)
{
$terms = array();
$values = array();
if (isset($something1)) {
$terms[] = "something1 = ?";
$values[] = $something1;
}
if (isset($something2)) {
$terms[] = "something2 = ?";
$values[] = $something2;
}
if (isset($something3)) {
$terms[] = "something3 = ?";
$values[] = $something3;
}
if (isset($something4)) {
$terms[] = "something4 = ?";
$values[] = $something4;
}
if (isset($something5)) {
$terms[] = "something5 = ?";
$values[] = $something5;
}
$query = "SELECT * FROM users ";
if ($terms) {
$query .= " WHERE " . join(" AND ", $terms);
}
if (defined('DEBUG') && DEBUG==1) {
print $query . "\n";
print_r($values);
exit();
}
$stmt = $pdo->prepare($query);
if ($stmt === false) { die(print_r($pdo->errorInfo(), true)); }
$status = $stmt->execute($values);
if ($status === false) { die(print_r($stmt->errorInfo(), true)); }
}
I've tested the above and it works. If I pass any non-null value for any of the five function arguments, it creates a WHERE clause for only the terms that are non-null.
Test with:
define('DEBUG', 1);
search('one', 'two', null, null, 'five');
Output of this test is:
SELECT * FROM users WHERE something1 = ? AND something2 = ? AND something5 = ?
Array
(
[0] => one
[1] => two
[2] => five
)
If you need this to be more dynamic, pass an array to the function instead of individual arguments.
I have PHP function which checks to see if variables are set and then adds them onto my SQL query. However I am don't seem to be getting any results back?
$where_array = array();
if (array_key_exists("location", $_GET)) {
$location = addslashes($_GET['location']);
$where_array[] = "`mainID` = '".$location."'";
}
if (array_key_exists("gender", $_GET)) {
$gender = addslashes($_GET["gender"]);
$where_array[] = "`gender` = '".$gender."'";
}
if (array_key_exists("hair", $_GET)) {
$hair = addslashes($_GET["hair"]);
$where_array[] = "`hair` = '".$hair."'";
}
if (array_key_exists("area", $_GET)) {
$area = addslashes($_GET["area"]);
$where_array[] = "`locationID` = '".$area."'";
}
$where_expr = '';
if ($where_array) {
$where_expr = "WHERE " . implode(" AND ", $where_array);
}
$sql = "SELECT `postID` FROM `posts` ". $where_expr;
$dbi = new db();
$result = $dbi->query($sql);
$r = mysql_fetch_row($result);
I'm trying to call the data after in a list like so:
$dbi = new db();
$offset = ($currentpage - 1) * $rowsperpage;
// get the info from the db
$sql .= " ORDER BY `time` DESC LIMIT $offset, $rowsperpage";
$result = $dbi->query($sql);
// while there are rows to be fetched...
while ($row = mysql_fetch_object($result)){
// echo data
echo $row['text'];
} // end while
Anyone got any ideas why I am not retrieving any data?
while ($row = mysql_fetch_object($result)){
// echo data
echo $row->text;
} // end while
I forgot it wasn't coming from an array!