I have written following code in php and am using mongo db as database
$projection = array("broadcast_id" => 1,"studentList" => 1);
$query = array('broadcast_id'=> $broadcast_id);
$count = $this->collection->find($query)->count();
$cursor = $this->collection->find($query,$projection);
$result = array();
foreach($cursor as $row)
{
$idstring = trim($row["studentList"]);
$idstring = preg_replace('/\.$/', '', $idstring);
$idarray = explode('|', $idstring);
foreach($idarray as $studentId)
{
$this->StudentCollection = $this->db->studentTbl;
$StudentCursor= $this->StudentCollection->find(array("student_id" => $studentId));
if($StudentCursor->count() > 0)
{
foreach ($StudentCursor as $k => $srow) {
array_push($result, $srow);
}
}
else
{
array_push($result, array("datanotfound"=>1));
}
}
}
return json_encode($result);
After fetching "studentList" from broadcastTbl table and $idstring has "5042|5043|5044" values which are student ids of studentTbl. Now I am trying to fetch corresponding students details by splitting them one by one on the basis of "|". After that I am trying to push them in array $result.
It always displays $StudentCursor->count() as "1" and never enter in else block even if find() query fails to find record and then it displays output as [] i.e it always stay in if statement !!!
Please help me in tracking out what is wrong in the code and writting it efficiently!!!
Related
This question already has answers here:
Check if all values in an array exist in a database column
(2 answers)
Closed 1 year ago.
I have an array that looks something like this -> ["john.smith#gmail.com", "jane.doe#gmail.com", "jack.smith#gmail.com"]. I want to increment $count for each email that exists in the database. If it doesn't exist (invalid), then I want to push it to the $invalidEmails array.
After that, I want to set my $output according to whether all the emails in the original array are valid or not. They're valid if all of them exist in the database. I'd appreciate some help with this as I'm not sure how to go about it from here. It doesn't work for all cases right now, for example if first email is valid but second one is invalid.
This is what I have so far:
$result = $conn->query("SELECT mail FROM dej_colleagues");
$rows = mysqli_fetch_all($result, MYSQL_ASSOC);
$tags = preg_split("/\,/", $_POST['tags']);
$invalidEmails = array();
$count = 0;
for ($i = 0; $i < sizeof($tags); $i++) {
$trim_brackets = trim($tags[$i], '[]');
$trim_quotes = trim($trim_brackets, '"');
foreach($rows as $row) {
if ($trim_quotes == $row["mail"]) {
$count += 1;
break;
}
}
if ($count == 0) {
array_push($invalidEmails, $tags[$i]);
}
}
$output = array();
if (sizeof($tags) == $count) {
$output = array("validity => "valid emails");
}
else {
$output = array("validity" => "invalid emails", "emails" => $invalidEmails;
}
echo json_encode($output);
Your code seems convoluted, so rather than debug it I started with a more focussed query and worked from there.
Basically, the query asks the database for a list of emails that appear in your $tags array, then uses array_diff() to find any that appear in $tags, but not in the database.
From there you can produce your output directly.
ini_set('display_errors',1);
$mysqli = new mysqli('mysql.lv.local','userName', 'userPassword','schemaName' );
// Assuming the input is a string and not an array, json_decode it.
$tags = '["john.smith#gmail.com", "Jane.doe#gmail.com", "jack.smith#gmail.com","fred.jones#gmail.com"]';
$tags = json_decode($tags);
// switch everything to lower case
$tags = array_map('strtolower', $tags);
// Build and prepare a query with placeholders. Note conversion to lower case
$sql = 'select distinct lower(`mail`) from `emails` where lower(`mail`) in (?'.str_repeat(',?', count($tags)-1).')';
//echo $sql;
$stmt = $mysqli->prepare($sql);
// Bind the values from $tags to the query
$stmt->bind_param(str_repeat('s', count($tags)), ...$tags);
// Execute
$stmt->execute();
// Bind a variable for the result
$stmt->bind_result($email);
// Retrieve the emails in to $dbMails
$dbMails = [];
while ($stmt->fetch()) {
$dbMails[] = $email;
}
//var_dump($dbMails);
// Anything that's in $tags but not in $dbMails is invalid
$absentEmails = array_diff($tags, $dbMails);
//var_dump($absentEmails);
if ($absentEmails) {
$op= ["validity"=>"Invalid enails", 'emails'=>array_values($absentEmails)];
} else {
$op= ["validity"=>"Valid enails"];
}
echo json_encode($op);
I am trying to add data to an array $result where each value is a string $idstring which will contain the employees ids like "999|888|777". The data is fetched from broadcastTbl collection from a MongoDB. I need to fetch each employee's corresponding details in a loop and push to $result. I am successfully fetching the data, but the trouble I am facing is in the below code where only one employees' data is getting pushed to the $result array.
$projection = array("broadcast_id" => 1, "employeeList" => 1);
$query = array("broadcast_id" => $broadcast_id);
$count = $this->collection->find($query)->count();
$cursor = $this->collection->find($query, $projection);
$result = array();
foreach($cursor as $row)
{
$idstring = trim($row["employeeList"]);
$idstring = preg_replace('/\.$/', '', $idstring);
$idarray = explode('|', $idstring);
foreach($idarray as $employeeId)
{
$this->EmployeeCollection = $this->db->EmployeesTbl;
$EmployeeCursor= $this->EmployeeCollection->find(array("EmployeeNumber" => $employeeId));
$EmployeeCursorCount= $this->EmployeeCollection->find(array("EmployeeNumber" => $employeeId))->count();
if($EmployeeCursor->count() > 0)
{
array_push($result,$EmployeeCursorCount);
foreach ($EmployeeCursor as $k => $row) {
array_push($result, $row);
}
}
else
{
array_push($result, array("datanotfound"=>1));
}
return json_encode($result);
}
}
You are returning too early.
Move return json_encode($result);
After the outer-most foreach loop.
here is the cron code:
function blablabla_cron() {
$i=1;
do {
$gad = blablabla();
$i++;
}while ($i<6);
}
this code returns me always the same value of the table.
and here is the code of the blablabla function
function blablabla() {
// Begin building the query.
$query = db_select('watchdog', 'th')
->extend('PagerDefault')
->orderBy('wid')
->fields('th')
->limit(8)
// Fetch the result set.
$result = $query->execute();
// Loop through each item and add to the $rows array.
foreach ($result as $row) {
$Severities = unserialize($row->variables);
if($Severities['%type']) {
$rows[] = array(
$row -> wid,
$Severities['%type'],
);
}
}
// Headers for theme_table().
$header = array('ID', 'Message');
// Format output.
$output = theme('table', array('header' => $header, 'rows' => $rows)) . theme('pager');
return $output;
}
what i must do in order when cron runs it will show all the values of the table?
Pass that $i to blabla($i) and then use it inside that function to query different range of row your query returns:
Instead of:
->limit(8);
Use:
->range(($i-1)*8,8);
That is...if I figured out correctly what you want to achieve here.
https://api.drupal.org/comment/13489#comment-13489
I'm working on a project in which I pull various statistics about the NHL and inserting them into an SQL table. Presently, I'm working on the scraping phase, and have found an XML parser that I've implemented, but I cannot for the life of me figure out how to pull information from it. The table can be found here -> http://www.tsn.ca/datafiles/XML/NHL/standings.xml.
The parser supposedly generates a multi-dimmensional array, and I'm simply trying to pull all the stats from the "info-teams" section, but I have no idea how to pull that information from the array. How would I go about pulling the number of wins Montreal has? (Solely as an example for the rest of the stats)
This is what the page currently looks like -> http://mattegener.me/school/standings.php
here's the code:
<?php
$strYourXML = "http://www.tsn.ca/datafiles/XML/NHL/standings.xml";
$fh = fopen($strYourXML, 'r');
$dummy = fgets($fh);
$contents = '';
while ($line = fgets($fh)) $contents.=$line;
fclose($fh);
$objXML = new xml2Array();
$arrOutput = $objXML->parse($contents);
print_r($arrOutput[0]); //This print outs the array.
class xml2Array {
var $arrOutput = array();
var $resParser;
var $strXmlData;
function parse($strInputXML) {
$this->resParser = xml_parser_create ();
xml_set_object($this->resParser,$this);
xml_set_element_handler($this->resParser, "tagOpen", "tagClosed");
xml_set_character_data_handler($this->resParser, "tagData");
$this->strXmlData = xml_parse($this->resParser,$strInputXML );
if(!$this->strXmlData) {
die(sprintf("XML error: %s at line %d",
xml_error_string(xml_get_error_code($this->resParser)),
xml_get_current_line_number($this->resParser)));
}
xml_parser_free($this->resParser);
return $this->arrOutput;
}
function tagOpen($parser, $name, $attrs) {
$tag=array("name"=>$name,"attrs"=>$attrs);
array_push($this->arrOutput,$tag);
}
function tagData($parser, $tagData) {
if(trim($tagData)) {
if(isset($this->arrOutput[count($this->arrOutput)-1]['tagData'])) {
$this->arrOutput[count($this->arrOutput)-1]['tagData'] .= $tagData;
}
else {
$this->arrOutput[count($this->arrOutput)-1]['tagData'] = $tagData;
}
}
}
function tagClosed($parser, $name) {
$this->arrOutput[count($this->arrOutput)-2]['children'][] = $this->arrOutput[count($this- >arrOutput)-1];
array_pop($this->arrOutput);
}
}
?>
add this search function to your class and play with this code
$objXML = new xml2Array();
$arrOutput = $objXML->parse($contents);
// first param is always 0
// second is 'children' unless you need info like last updated date
// third is which statistics category you want for example
// 6 => the array you want that has wins and losses
print_r($arrOutput[0]['children'][6]);
//using the search function if key NAME is Montreal in the whole array
//result will be montreals array
$search_result = $objXML->search($arrOutput, 'NAME', 'Montreal');
//first param is always 0
//second is key name
echo $search_result[0]['WINS'];
function search($array, $key, $value)
{
$results = array();
if (is_array($array))
{
if (isset($array[$key]) && $array[$key] == $value)
$results[] = $array;
foreach ($array as $subarray)
$results = array_merge($results, $this->search($subarray, $key, $value));
}
return $results;
}
Beware
this search function is case sensitive it needs modifications like match to
a percentage the key or value changing capital M in montreal to lowercase will be empty
Here is the code I sent you working in action. Pulling the data from the same link you are using also
http://sjsharktank.com/standings.php
I have actually used the same exact XML file for my own school project. I used DOM Document. The foreach loop would get the value of each attribute of team-standing and store the values. The code will clear the contents of the table standings and then re-insert the data. I guess you could do an update statement, but this assumes you never did any data entry into the table.
try {
$db = new PDO('sqlite:../../SharksDB/SharksDB');
$db->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
} catch (Exception $e) {
echo "Error: Could not connect to database. Please try again later.";
exit;
}
$query = "DELETE FROM standings";
$result = $db->query($query);
$xmlDoc = new DOMDocument();
$xmlDoc->load('http://www.tsn.ca/datafiles/XML/NHL/standings.xml');
$searchNode = $xmlDoc->getElementsByTagName( "team-standing" );
foreach ($searchNode as $searchNode) {
$teamID = $searchNode->getAttribute('id');
$name = $searchNode->getAttribute('name');
$wins = $searchNode->getAttribute('wins');
$losses = $searchNode->getAttribute('losses');
$ot = $searchNode->getAttribute('overtime');
$points = $searchNode->getAttribute('points');
$goalsFor = $searchNode->getAttribute('goalsFor');
$goalsAgainst = $searchNode->getAttribute('goalsAgainst');
$confID = $searchNode->getAttribute('conf-id');
$divID = $searchNode->getAttribute('division-id');
$query = "INSERT INTO standings ('teamid','confid','divid','name','wins','losses','otl','pts','gf','ga')
VALUES ('$teamID','$confID','$divID','$name','$wins','$losses','$ot','$points','$goalsFor','$goalsAgainst')";
$result= $db->query($query);
}
I have the following code:
function resultToArray($result) {
$rows = array();
while($row = $result->fetch_assoc()) {
$rows[] = $row;
}
return $rows;
}
// Usage
$query = 'SELECT q17, COUNT(q17) FROM tresults GROUP BY q17';
$result = $mysqli->query($query);
$rows = resultToArray($result);
//print_r($rows); // Array of rows
$result->free();
Brings back the following (only an excerpt):
Array ( [0] => Array ( [q17] => [COUNT(q17)] => 7 ) [1] => Array ( [q17] => Admin & Clerical [COUNT(q17)] => 118 )......etc.
What I am struggling with is how to then return the data, basically, what I need is some code to pull out the data as follows:
WHERE Array = Admin & Clerical BRING BACK THE COUNT(q17) number
How do I search through the array, normally, I'd use something like:
if($rows['q17']==$q[$i]){echo$rows['COUNT(q17)'];}
But this doesn't work - I assume because there are two sets of data within each part of the array? Not sure how to deal with this.
You can achieve this by using MYSQL itself, by using HAVING clause instead of WHERE.
To do this rewrite your query like this.
$query = 'SELECT q17, COUNT(q17) as qcount FROM tresults GROUP BY q17 HAVING q17="Admin & Clerical" ';
echo $row[0]['qcount']; //return 118
if you still want to it with PHP after getting the result from the database, it's how it done:
function get_q17_count($rows, $q17){
foreach ($rows as $onerow) {
if($onerow['q17'] == $q17){
return $onerow['COUNT(q17)'];
}
}
}
function resultToArray($results) {
$rows = array();
while($row = $results->fetch_assoc()) {
$rows[] = $row;
}
return $rows;
}
// Usage
$querys = 'SELECT q17, COUNT(q17) FROM tresults GROUP BY q17';
$results = $mysqli->query($querys);
$rows = resultToArray($results);
//print_r($rows); // Array of rows
$results->free();
function searchForId($id, $array) {
foreach ($array as $key => $val) {
if ($val['q17'] === $id) {
return $val['COUNT(q17)'];
}
}
return null;
}
Called the function using:
$id = searchForId($q[$i], $rows);echo " (".$id.")";