I am trying to make a query where I want to retrieve items querying a field in the database.
I need to check something as follows (example):
To retrieve books where the text field contain "Soccer" or "Basketball":
I want to have the items where only in the population above:
contain '1989'
and
exclude 'Europe'
Any idea? I am doing a counting for now but it does not work:
//search words
foreach ($cardSearch as $value) {
$regexSearch[]['text'] = new MongoRegex("/" . $value . "/");
}
//words included
foreach ($cardInclu as $value) {
$regexInclu[]['text'] = new MongoRegex("/" . $value . "/");
}
//words excluded
foreach ($cardExlu as $value) {
$regexExclu[]['text'] = new MongoRegex("/" . $value . "/");
}
$arr['$and'] = $regexInclu;
$arr['$ne'] = $regexExclu;
array_push($regexSearch, $arr);
$i = $mongoCollection->count(array('$or' => $regexSearch));
or
$i = $mongoCollection->count(array('$or' => $regexSearch,
'$and' => $regexInclu, '$ne' => $regexExclu));
Thanks!
Related
I want to set two fields in one row when outputting my array result like:
{
"key" : "value",
...
}
in my part of code:
$letter = $this->getMyRepository()->findAll();
$result = array();
foreach($letter as $key => $value){
$id = $value->getId();
if(!isset($result[$id])) $result[$id] = array();
$result[$id][] = $value->getKey() . ' ' . $value->getValue();
print_r($value);die;
}
but it returns just Key fields.
This is how my json looks like ["Chicken",{"quantity":"1"},"Froggies",{"quantity":"2"},"Fryies",{"quantity":"3"}].
Is there a way that i can get the data out the results like
Chicken : 1, Froggies:2, Fryies:3
I tried to use implode to get this done but i get an error saying array to string conversion,
Below is my code
foreach($request->get('item_id') as $key => $id)
{
$selected_item = Item::all()->where('id',$id);
foreach($selected_food as $select)
{
$food_selected[]= $select->name ;
$food_selected[] = ['quantity' => $request->get('quantity')[$key]];
}
}
$query ="Your items are ".implode(',',$food_selected)."";
Maybe array of objects would be more useful in that situation, which you could get this way:
$arr = [];
foreach ( $request->get('item_id') as $key => $id ) {
$selected_item = Item::all()->where('id', $id);
foreach ( $selected_item as $select ) {// $selected_item or $selected_food here
/*
$obj = new stdClass;
$obj->{$select->name} = $request->get('quantity')[$key];
$arr[] = $obj;*/
$arr[$select->name] = (int) $request->get('quantity')[$key];
}
}
$query = '';
foreach ( $arr as $k => $v ) {
$query .= ' '.$k.': '.$v.',';
}
$query = rtrim($query, ',');
$query = ltrim($query);
$query = "Your items are ".$query;
I assume that the ID is unique key for an Item and your Item::all()->where('id',$id) will return only one record. If this is true, the second loop is unnecessary.
Based on this assumption, I come to this code:
$result = collect($request->get('item_id'))
->map(function($itemId, $itemKey) use ($request) {
$item = Item::find($itemId);
return $item->name . ' : ' . $request->get('quantity')[$itemKey];
})->implode(',');
// $result contains the string: "Chicken : 2, Fries : 1"
For explanation:
Cast the array into a collection
Use map to loop over it
Find the Item by its ID
Return the name and the quantity (this returns a collection)
Implode the collection
I have an HTML-table, where various selections can be made. The selected variables that contain the respective values, build the array $data[]. Now, with this array I would like to make an SQL request where all selected criteria should be met. This means, that I need the following request:
SELECT * FROM fruitgroups
WHERE $selection[1] = $value[1]
AND $selection[2] = $value[2]
AND $selection[3] = $value[3]
etc ...
Can anybody please help me with the loop that generates exactly the string:
...
$selection[1] = $value[1]
AND $selection[2] = $value[2]
AND $selection[3] = $value[3]
... etc ...
...that I need for the request?
Thank you in advance!
You can make a SQL request like this:
$selection = array("one", "two", "three");
$value = array("Tone", "Ttwo", "Tthree");
$concat = array();
foreach($selection as $key => $var){
$new = $selection[$key] . " = " . $value[$key];
array_push($concat, $new);
}
$concat = implode(" AND ", $concat);
$request = 'SELECT * FROM fruitgroups WHERE ' . $concat . ';';
echo $request;
Run example
Similar to the answer above, but keep it simple and don't forget the single quotes around the values:
$clauses = [];
foreach ($values as $i => $value) {
$conditions[] = "{$selection[$i]} = '$value'";
}
$query = "SELECT * FROM fruitgroups WHERE " . implode(' AND ', $conditions);
Even better, use an ORM like Eloquent:
$conditions = [];
foreach ($values as $i => $value) {
$conditions[$i] = $value;
}
$result = App\FruitGroups::where($conditions)->get();
I'm assuming you are sanitizing your inputs first, of course.
I'm working on PHP array iteration. I have arrays for example as below :
1) banned 2) age
$banned = array(
"school_name"=> "abc",
"school_rating"=> "xyz",
);
$age = array(
"Peter"=> "35", // 0
"Ben"=> "16", // 1
"Joe"=> "43" // 2
"john"=> "12", // 3
);
I'm iterating over this array using foreach :
foreach($age as $index => $value) {
if ($value < '18') {
$banned['name_' . $index] = $value; // Push values below 18 to 'banned' array with index value
}
}
I want to find names which are below age 18 & push theme to 'banned' array.
This code works correct. But while pushing names to 'banned' array, I want to append new index to their names such as 'Ben_0' 'john_1'.
Current code appending index as per foreach iteration such as 'Ben_1' 'john_3'.
I want my final array to like :
$banned = array(
"school_name"=> "abc",
"school_rating"=> "xyz",
"Ben_0"=> "16",
"john_1"=> "12",
);
I want this new indexing in order to perform some API call later.
So is there any way to achieve this ?
You mean something like:
$count = 0;
foreach($age as $index => $value) {
if ($value < '18') {
$banned[$index . '_' . $count++] = $value; // Push values below 18 to 'banned' array with index value
}
}
You can do it like this:
$i = 0;
foreach($age as $index => $value)
{
if ($value < '18') {
$banned['name_' . $i] = $value; // Push values below 18 to 'banned' array with index value
$i++;
}
}
$i = 0;
foreach ($age as $name => $age)
{
$banned[$name . '_' . $i++] = $age;
}
Suppose I have a multi-dimensional array of the form:
array
(
array('Set_ID' => 1, 'Item_ID' => 17, 'Item_Name' = 'Whatever'),
array('Set_ID' => 1, 'Item_ID' => 18, 'Item_Name' = 'Blah'),
array('Set_ID' => 2, 'Item_ID' => 19, 'Item_Name' = 'Yo')
)
The array has more sub-arrays, but that's the basic form-- Items in Sets.
How can I loop through this array so that I can echo the number of items in each set along with the all the items like so:
Set 1 has 2 Items: 17: Whatever and 18: Blah
Set 2 has 1 Items: 19: Yo
I'm aware that this could be done with two loops-- one to build an array, and another to loop through that array. However, I'd like to do this all with only one loop.
In your answer, you should assume that there are two display functions
display_set($id, $count) //echo's "Set $id has $count Items"
display_item($id, $name) //echo's "$id: $name"
UPDATE: Forgot to mention that the data is sorted by Set_ID because its from SQL
Right, all the examples below rely on an ordered set, the OP states it is ordered initially, but if needed a sort function could be:
// Sort set in to order
usort($displaySet,
create_function('$a,$b',
'return ($a['Set_ID'] == $b['Set_ID']
? ($a['Set_ID'] == $b['Item_ID']
? 0
: ($a['Item_ID'] < $b['Item_ID']
? -1
: 1))
: ($a['Set_ID'] < $b['Set_ID'] ? -1 : 1));'));
Straight example using a single loop:
// Initialise for the first set
$cSetID = $displaySet[0]['Set_ID'];
$cSetEntries = array();
foreach ($displaySet as $cItem) {
if ($cSetID !== $cItem['Set_ID']) {
// A new set has been seen, display old set
display_set($cSetID, count($cSetEntries));
echo ": " . implode(" and ", $cSetEntries) . "\n";
$cSetID = $cItem['Set_ID'];
$cSetEntries = array();
}
// Store item display for later
ob_start();
display_item($cItem['Item_ID'], $cItem['Item_Name');
$cSetEntries[] = ob_get_clean();
}
// Perform last set display
display_set($cSetID, count($cSetEntries));
echo ": " . implode(" and ", $cSetEntries) . "\n";
Using a recursive function it could be something like this:
// Define recursive display function
function displayItemList($itemList) {
if (!empty($itemList)) {
$cItem = array_shift($itemList);
display_item($cItem['Item_ID'], $cItem['Item_Name');
if (!empty($itemList)) {
echo " and ";
}
}
displayItemList($itemList);
}
// Initialise for the first set
$cSetID = $displaySet[0]['Set_ID'];
$cSetEntries = array();
foreach ($displaySet as $cItem) {
if ($cSetID !== $cItem['Set_ID']) {
// A new set has been seen, display old set
display_set($cSetID, count($cSetEntries));
echo ": ";
displayItemList($cSetEntries);
echo "\n";
$cSetID = $cItem['Set_ID'];
$cSetEntries = array();
}
// Store item for later
$cSetEntries[] = $cItem;
}
// Perform last set display
display_set($cSetID, count($cSetEntries));
echo ": ";
displayItemList($cSetEntries);
echo "\n";
Amusingly, it can be one single recursive function:
function displaySetList($setList, $itemList = NULL) {
// First call, start process
if ($itemList === NULL) {
$itemList = array(array_shift($setList));
displaySetList($setList, $itemList);
return;
}
// Check for display item list mode
if ($setList === false) {
// Output first entry in the list
$cItem = array_shift($itemList);
display_item($cItem['Item_ID'], $cItem['Item_Name']);
if (!empty($itemList)) {
// Output the next
echo " and ";
displaySetList(false, $itemList);
} else {
echo "\n";
}
return;
}
if (empty($setList) || $setList[0]['Set_ID'] != $itemList[0]['Set_ID']) {
// New Set detected, output set
display_set($itemList[0]['Set_ID'], count($itemList));
echo ": ";
displaySetList(false, $itemList);
$itemList = array();
}
// Add next item and carry on
$itemList[] = array_shift($setList);
displaySetList($setList, $itemList);
}
// Execute the function
displaySetList($displaySet);
Note that the recursive example here is grossly inefficient, a double loop is by far the quickest.
<?php
$sets = array();
foreach ($items as $item)
{
if (!array_key_exists($item['Set_ID'], $sets))
{
$sets[$item['Set_ID']] = array();
}
$sets[$item['Set_ID']][] = $item;
}
foreach ($sets as $setID => $items)
{
echo 'Set ' . $setID . ' has ' . count($items) . ' Items: ';
foreach ($items as $item)
{
echo $item['Item_ID'] . ' ' . $item['Item_Name'];
}
}
?>
Something like this i guess?
EDIT:
After i posted this i saw the display functions where added. But you get the point.
The need to not print out any items until we know how many there are in the set makes this difficult. At some point, we'll need to doing some buffering, or else backtracking. However, if I'm allowed internal loops, and sets are contiguous in the "master" array, then with some hacking around:
$set = 0;
$items;
foreach ($arr as $a) {
if ($a['Set_ID'] != $set) {
if ($set != 0) {
display_set($set, count($items));
foreach ($items as $i)
display_item($i)
}
$set = $a['Set_ID'];
$items = array();
}
$items[] = $a;
}
How about this:
$previous_set = false;
$items = '';
$item_count = 0;
foreach ($rows as $row)
{
if ($row['Set_ID'] != $previous_set)
{
if ($previous_set)
{
echo display_set($row['Set_ID'], $item_count);
echo $items;
}
$previous_class = $row['Set_ID'];
$item_count = 0;
$items = '';
}
$items .= display_item($row['Item_ID'], $row['Title']);
$item_count++;
}
echo display_set($row['Set_ID'], $item_count);
echo $items;