I have this code above which i use to implode some variable.
The issue is that i need to create the same thing for $hostess_name[] as i did for $hostess_id_selected[].
I don't know what am i doing wrong.
I need to implode it the same way as i did with $hostess_id_selected1
foreach($hostess_id as $val) {
$hostess_id_selected[] = $val;
$sqlnomehostess="SELECT nome_hostess FROM hostess where id='$val'";
$resultnomehostess=mysql_query($sqlnomehostess)or die(mysql_error());
$hostess_name= array();
while ($row=mysql_fetch_array($resultnomehostess,MYSQL_ASSOC)) {
$hostess_name[] = $row['nome_hostess'];
}
}
$hostess_id_selected1 = implode("-",$hostess_id_selected);
you have $hostess_name= array(); inside the loop. move it above
EDIT:
some tips:
foreach($hostess_id as $val) {
$hostess_id_selected[] = $val;
// this is pointless, i mean - you are recreating $hostess_id
btw, just a little tip for improvement - instead of running many SQL queries you can use a single query:
$sql = "SELECT GROUP_CONTACT(`nome_hostess` SEPARATOR '-') AS name_list
FROM `hostess`
WHERE id IN (".implode(',',$hostess_id).")";
if the items in $hostess_id are not necessarily numeric:
$sql_ids = array();
foreach($hostess_id as $id)
$sql_ids[] = mysql_real_escape_string($id);
$sql = "SELECT GROUP_CONTACT(`nome_hostess` SEPARATOR '-') AS name_list
FROM `hostess`
WHERE id IN (".implode(',',$sql_ids).")";
and after that:
the sql query returns 1 row with a column called "name_list", which contains the names joined with "-".
if you want to maintain the order of the id and name - you should do:
$sql = "SELECT
GROUP_CONTACT(`nome_hostess` SEPARATOR '-') AS name_list,
GROUP_CONTACT(`id` SEPARATOR '-') AS id_list
FROM `hostess`
WHERE id IN (".implode(',',$hostess_id).")";
implode is a basic function of php. It always work perfect.
Just check your array $hostess_id_selected, what it returning.
I think it will help you.
Related
I have a site developed in codeigniter where I want to retrieve comment of a specific tee.
I have a table tee like that:
- id
- user_id
- name
- created
- modified
And the table tee_comments like that:
- id
- user_id
- tee_id
- created
- modified
I have done this query:
$this->db->select('*,tee.id as id,tee.created as created, tee_comments.id as tee_comments_id, tee_comments.created as tee_comments_created, tee_comments.modified as tee_comments_modified');
$this->db->from('tee');
$this->db->join('tee_comments', 'tee_comments.tee_id = tee.id','left outer');
$this->db->order_by("tee.created", "desc");
$query = $this->db->get();
With this query I retrieve two rows of tee because I have two comments in that tee.
My goal is to retrieve only one row where inside there is an array of comment like:
tee{
id,
name,
created,
modified
comment{
[0]
id,
tee_id,
comment,
created,
modified
[1]
id,
tee_id,
comment,
created,
modified
}
}
I have tried into the join:
- left
- right
- left outer
- right outer
But doesn't solve the problem, is there a way to do that?
Thanks
I love CodeIgniter! I use it constantly! You have 2 really simple options here:
One way would be to use limit.
$this->db->select('*,tee.id as id,tee.created as created, tee_comments.id as tee_comments_id, tee_comments.created as tee_comments_created, tee_comments.modified as tee_comments_modified');
$this->db->join('tee_comments', 'tee_comments.tee_id = tee.id','left outer');
$this->db->order_by("tee.created", "desc");
$query = $this->db->limit(1)->get('tee');
Another way is to get first item in results Array
$query = $this->db->get();
$results = $query->result(); // gets return as an array
$row = $results[0]; // will be first row in results array
Keep in mind tho, $row will return as a object(stdClass) meaning you'll have to retrieve things from it like $row->column_name.
A handy little snippet I like to use after a call is below. It makes the row Object's Array's instead.
$results = $db->get('tee')->result(); // snippet comes after you have result array
// snippet here
foreach ($r as $k => $v) { $results[$k] = array(); foreach ($v as $kk => $vv) { $results[$k][$kk] = $vv != "NULL" ? trim($vv) : ""; } }
Use $this->db->limit(1) to retrieve a single record.
According to the accepted answer on this question, you may need to put the limit statement before the select:
$this->db->limit(1);
$this->db->select('*,tee.id as id,tee.created as created, tee_comments.id as tee_comments_id, tee_comments.created as tee_comments_created, tee_comments.modified as tee_comments_modified');
$this->db->from('tee');
Option one:
for ($i = 0; $i < count($records); $i++)
{
$data = $records[$i];
// work with date.
if($i == 1)
break;
}
Option two:
just assign the first row to var.
$row = $records['tee']['comment'][0];
I have some search functionality that works with 3 drop down boxes. Based on the criteria chosen, a profile is returned. The 3 drop downs are:
County
Constituency
Gender
Now I am trying to build a query but have just realised that actually a person does not have to choose an option from each drop down and nor do I want them to.
So for instance I do not want to disable the search button until an option is selected from each drop down.
Having chosen a value from any drop down, and possibly having no value selected from any drop down at all, and just clicking the search button, I am trying to understand how I can cope with the unknown combinations.
My first thought was that I could use something like a truth table but I imagine this is simply overkill and in fact this is a very common piece of functionality.
Then I thought maybe I could have something like:
$county = "$_GET['county'];";
$constituency = "$_GET['constituency'];";
$gender = "$_GET['gender'];";
Then I could check to see if they are empty and somehow use this value, e.g.
if($county !== '') {
???SOMEHOW MAKE USE OF THIS IN AN SQL QUERY???
PERHAPS PASS IT TO ANOTHER PARAMETER
$sqlparams = "county = '$county'";
}
SELECT * FROM profile
WHERE {$sqlparams};
I think I'm on the right tracks but could use some guidance.
All help is greatly appreciated.
This should do want you want, I think.
<?php
$tooLookFor = array("county", "constituency", "gender");
foreach($tooLookFor as $key){
if(isset($_GET[$key]) && strlen($_GET[$key])>0){
$queryParams[] = $key.'="'.$_GET[$key].'"';
}
}
$query = "SELECT * FROM profile WHERE ".implode(' AND ', $queryParams);
?>
You could do something like:
$county = $_GET['county'];
$constituency = $_GET['constituency'];
$gender = $_GET['gender'];
$sqlparams = array();
if($county !== '') {
$sqlparams[] = "county = '$county'";
}
if($constituency !== '') {
$sqlparams[] = "constituency = '$constituency'";
}
if($gender !== '') {
$sqlparams[] = "gender = '$gender'";
}
$query = "SELECT * FROM profile";
if (count($sqlparams) > 0) {
$query .= " WHERE " . implode(" AND ", $sqlparams);
}
You can do that with something like this:
$where = array();
//repeat as needed
$where[$column] = $value;
$where2 = array();
foreach($where as $key => $value){
$where2[] = "$key = '$value'";
}
$where_string = implode(' AND ', $where2);
$where_string will have the string to insert after WHERE.
Yes, you are on the right track, you're just not at the right switch yet. ;)
You can't build the query until you know what you have to work with. So first, in your validation, determine (as you are doing) with the key words actually are and what fields they represent. Presumably these map to fields in tables, maybe 3 tables? Point is, your query will need to be dynamically built.
So my problem is this I got a code that loops trough a loggfile then compares them to a treestructure and then gives them a id that correspond to the id in the structure. To not get a lot of bad traffic i sort out all the 302 and above.
The problem is now that i want some specific 302s to count that have a particular pagetype in the structure. This is not a big problem as I can just match the url in the loggfile against the url in the tree structure but some loggfiles does not use friendly url while the structure is in friendly url this creates a problem but I can just match the id in the query parameter with the id in the structure. I then make a string of all the ids that match the special pagetype that I want.
The problem is this I can not get the Mysql statement to work, it looks like this.
$sqlQ1 = "SELECT `lid` FROM logfile WHERE date = '$date' AND ´query´ IN '$check'";
A example query can look like this "id=4&epslanguage=sv" so I want to check only the id=X part.
It´s a kinda easy question really im just stuck and can not get it to work, any help is appreciated!
I think your Q is: How do I extract id from that part of a line?
".. so I want to check only the id=X part."
Once you have isolated that string then you can use:
$string = "id=4&abclang=sv";
parse_str($string);
echo $id; // 4
EDIT
In light of other responses:
$strings[] = "id=4&abclang=sv";
$strings[] = "id=45&abclang=en";
$vals = array();
foreach( $strings as $string){
parse_str($string);
$vals[] = $id ;
}
$in_clause = join(",", $vals) ;
$sql = "SELECT lid FROM logfile WHERE something IN ($in_clause) ";
echo $sql; // SELECT lid FROM logfile WHERE something IN (4,45)
So you have the IDs already and want to filter the MySQL query to just get these rows?
$check = Array(1, 2, 3, 4);
$check = implode(",", $check);
$sqlQ1 = "SELECT `lid` FROM logfile WHERE date = '$date' AND ´query´ IN ($check)";
i have a variable and an user_name i want to search on a string(function_description) of the user_name for it
whats wrong with this :
$function_keywords = mysql_real_escape_string($_POST['function_keywords']);
if($function_keywords=="" || empty($function_keywords)){
redirect("show.php?functions=PHP");
}
//trim whitespace from the stored variable
$trimmed = trim($function_keywords);
//separate key-phrases into keywords
$trimmed_keywords = explode(" ",$trimmed);
// Build SQL Query for each keyword entered
foreach ($trimmed_keywords as $trimm){
// MySQL "MATCH" is used for full-text searching.
//this code is ebv weird , should check out soon!
$query = "SELECT *
FROM functions
WHERE isEnabled=1 AND isPrivate=0
AND function_description LIKE '{$trimm}'
AND user_name='{$user_name}'
";
// Execute the query to get number of rows that contain search kewords
$results=mysql_query ($query,$connection);
as far as "like" syntax goes you have to use the '%' symbol. if you query for
select * from table where column like '%yourkeyword%'
then it returns any rows with 'yourkeyword' inside the table column.
your statement will be true only if the column = 'yourkeyword'
That's highly inefficient. If someone puts in 5 keywords, you'd be running the search 5 times and getting 5 sets of results. Try something more along these lines:
$words = $_POST['function_keywords'];
if ($words == '') {
... abort ...
}
$parts = trim(explode(' ', $words));
$clauses = array();
foreach($parts as $part) {
$clauses[] = "function_description LIKE '%" . mysql_real_escape_string($part) . "%'";
}
$clause = implode(' OR ' , $clauses);
$sql = "SELECT .... WHERE (isEnabled=1) AND (isPrivate=1) AND (user_name='$user_name') AND ($clause)";
$result = mysql_query($sql) or die(mysql_error());
This'll build up a long series of or statements for each keyword specified, and run the whole thing as a single query.
To see if the function_description contains the keyword you need to use '%' which stands for anything much the way '*' does in unix. Try function_description LIKE '%{$trimm}%'
There's a way to get which fields were modified after a update query?
I want to keep track what field XXX user modified... any ways using active records?
I needed this exact functionality so I wrote this code. It returns the number of fields that were affected.
FUNCTION STARTS:
function mysql_affected_fields($sql)
{
// Parse SQL update statement
$piece1 = explode( "UPDATE ", $sql);
$piece2 = explode( "SET", $piece1[1]);
$sql_parts['table'] = trim($piece2[0]);
$piece1 = explode( "SET ", $sql);
$piece2 = explode( "WHERE", $piece1[1]);
$sql_parts['set'] = trim($piece2[0]);
$fields = explode (",",$sql_parts['set']);
foreach($fields as $field)
{
$field_parts = explode("=",$field);
$field_name = trim($field_parts[0]) ;
$field_value = trim($field_parts[1]) ;
$field_value =str_replace("'","",$field_value);
$sql_parts['field'][$field_name] = $field_value;
}
$piece1 = explode( "WHERE ", $sql);
$piece2 = explode( ";", $piece1[1]);
$sql_parts['where'] = trim($piece2[0]);
// Get original field values
$select = "SELECT * FROM ".$sql_parts['table']." WHERE ".$sql_parts['where'];
$result_latest = mysql_query($select) or trigger_error(mysql_error());
while($row = mysql_fetch_array($result_latest,MYSQL_ASSOC))
{
foreach($row as $k=>$v)
{
if ($sql_parts['field'][$k] == $v)
{
}
else
{
$different++;
}
}
}
return $different;
}
There is no way using active record to get this easily, but if you are only supporting one specific database type (let's say MySQL) you could always use Triggers?
Or, Adam is about right. If you have a WHERE criteria for your UPDATE you can SELECT it before you do the UPDATE then loop through the old and new versions comparing.
This is exactly the sort of work Triggers were created for, but of course that puts too much reliance on the DB which makes this less portable yada yada yada.
solution
instructions:
SELECT row, that user wants to modify
UPDATE it
Compute differences between selected and update it
Store the differences somewhere (or mail it, show it, whatever)
simple