sql - PreparedStatement select with php not working as expected -


i have query:

select id, result, ip_address, added_date results course_id = (  select id courses course =  'informatica' , macro_course_id = (  select id macro_courses macro_course =  'scienze-matematiche-fisiche-e-naturali' , organization_id = (  select id organizations organization =  'universita-degli-studi-di-torino' , city_id = (  select id cities city =  'torino' , region_id = (  select id regions region =  'piemonte' ))))) order id desc

and i'm using code preparedstatement

public function getresults($region, $city, $organization, $macro_course, $course) { //works     //added_date=datetime : yyyy-mm-dd hh:mm:ss     echo "select id, result, ip_address, added_date     results     course_id = (      select id     courses     course =  '$course'     , macro_course_id = (      select id     macro_courses     macro_course =  '$macro_course'     , organization_id = (      select id     organizations     organization =  '$organization'     , city_id = (      select id     cities     city =  '$city'     , region_id = (      select id     regions     region =  '$region' ))))) order id desc"; //just me know query being executed        if ($stmt = $this->mysqli->prepare(("     select id, result, ip_address, added_date     results     course_id = (      select id     courses     course =  ?     , macro_course_id = (      select id     macro_courses     macro_course =  ?     , organization_id = (      select id     organizations     organization =  ?     , city_id = (      select id     cities     city =  ?     , region_id = (      select id     regions     region =  ? ))))) order id desc    "))) {         $return = array();         $stmt->bind_param('sssss', $course, $macro_course, $organization, $city, $region);         $stmt->execute();         if ($stmt->fetch()) {             $i = 0;             while ($row = $stmt->fetch()) {                 print_r($row);//this never reached                 continue;                 $s = new result($row['result'], $row['added_date'], $row['id']);                 $return[$i] = $s;                 $i+=1;             }         }     }     return $return; }

the problem function returns 0 rows , 0 errors (checked $this->mysqli->error), seems $row = $stmt->fetch() false.

however, if copy , execute on phpmyadmin output @ function top, see 

showing lines 0 - 0 ( 1 total, query time 0.0003 sec)

so query returns line not catched php. missing? how can fix this?

because used $stmt-fetch() 2 times here

if ($stmt->fetch()) {         $i = 0;         while ($row = $stmt->fetch()) {

remove if ($stmt->fetch()) condition, work expected.

edit

from docs

note columns must bound application before calling $stmt->fetch().

you have bind result before calling $stmt->fetch() this

/* bind result variables */ $stmt->bind_result($name, $code);

Comments

Post a Comment

Popular posts from this blog

Why does Ruby on Rails generate add a blank line to the end of a file? -

running rails generate controller foo home results in: class foocontroller < application controller def home end end (there's nothing on line in actual file, blank line) is there purpose blank line? it's common use newline indicate end of line, last line. many editors (like vi, use) add in newline silently. consensus text files (especially in unix world) should end in newline, , there have been problems historically if wasn't present. why should text files end newline? the tool used count lines in file "wc" counts newlines in file, without trailing newline show 3 instead of 4. it improves readability of templates used in generator. consider: https://github.com/rails/rails/blob/master/railties/lib/rails/generators/rails/controller/templates/controller.rb to remove trailing newline, template have last line of: end<% end -%> instead of: end <% end -%> that seems less readable me. the discussion below refers
Read more

keyboard - Smiles and long press feature in Android -

i've created android keyboard. how add features inserting smilies, , using long keypresses display symbols? to create long-press behavior allows select several options pop-up menu, follow guide (specifically pop-up menu section): http://developer.android.com/guide/topics/ui/menus.html smileys (also known emoticons) combination of keys, understood programs , parsed same way. have do, when clicks smiley face on keyboard, simulate pressing of key combination matching emoticon. example, when clicks smiley, should simulate key presses ':' , ')' :). here's list of emoticons: http://en.wikipedia.org/wiki/list_of_emoticons
Read more

node.js - Bad Request - node js ajax post -

i'm using express 3.0 , node v0.11.0. have button submits form , i'm using ajax post data json object node server. client code is: $('#contact').submit(function(e) { console.log('submit called'); var formdata = json.stringify($('form').serializeobject()); console.log(formdata); $.ajax({ url: "http://localhost:3000/savedata/", type: "post", datatype: 'json', data: {objectdata: formdata}, contenttype: "application/json", complete: function() { console.log('process complete'); }, success: function(data) { console.log('process sucess'); }, error: function() { console.log('process error'); }, }); return false; }); then on server: var express = require('express'); var app = express(); app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.bodyparser());
Read more