Create Array With Key And Value Pair In Codeigniter 4 - php

I am trying to create and array to fill for my form_dropdown() for my view:
<?php echo form_dropdown('vendor', $vendors, '', 'class="form-control"') ?>
However, I am only getting the last value based on the function that generates the array:
public function get_vendors() {
$vendors = $this->db->table('vendor')->get()->getResultArray();
// Return key => value pair array
$array = array(
0 => 'Not Assigned'
);
if (!empty($vendors)) {
foreach ($vendors as $vendor) {
$array = array(
$vendor['id'] => $vendor['vendor']
);
}
}
return $array;
}
This function is within my model. The only problem I have is that it's returning only the last row from the table. However when I do a var_dump() for the $vendors I get all the rows. Not sure what I am doing wrong.
array (size=2)
0 =>
array (size=4)
'id' => string '1' (length=1)
'vendor' => string 'Blue Chip' (length=9)
'datecreated' => string '2022-08-16' (length=10)
'datemodified' => string '2022-08-16' (length=10)
1 =>
array (size=4)
'id' => string '2' (length=1)
'vendor' => string 'ASP' (length=3)
'datecreated' => string '2022-08-30' (length=10)
'datemodified' => string '2022-08-31' (length=10)

Changing the query to from getResultArray() to getResultObject() did the trick. So I was able to use $array[$vendor->id] = $vendor->vendor;
public function get_vendors() {
$vendors = $this->db->table('vendor')->get()->getResultObject();
// Return key => value pair array
$array = array(
0 => 'Not Assigned'
);
if (!empty($vendors)) {
foreach ($vendors as $vendor) {
$array[$vendor->id] = $vendor->vendor;
}
}
return $array;
}

If you still want to use getResultArray():
public function get_vendors() {
$vendors = $this->db->table('vendor')->get()->getResultArray();
// Return key => value pair array
$array = array(
0 => 'Not Assigned'
);
if (!empty($vendors)) {
foreach ($vendors as $vendor) {
$array[$vendor['id']] => $vendor['vendor'];
}
}
return $array;
}

Related

Merge inner PHP arrays into one multidimensional array - No duplicates basing on Key value

I have tried a number of PHP functions like array_unique to merge the arrays I have but that does not work since these are not strings.
The starting output would be this on var_dump( $country_cities );
array (size=3)
0 =>
array (size=1)
'BH' =>
array (size=4)
'post_id' => int 7886
'country' => string 'BH' (length=2)
'city_name_eng' => string 'Laurence' (length=8)
'city_name_arabic' => string '3684hdfpfwbhisf' (length=15)
1 =>
array (size=1)
'BH' =>
array (size=4)
'post_id' => int 7885
'country' => string 'BH' (length=2)
'city_name_eng' => string 'Bahrain City' (length=12)
'city_name_arabic' => string 'vgdg824762' (length=10)
2 =>
array (size=2)
'BH' =>
array (size=4)
'post_id' => int 7885
'country' => string 'BH' (length=2)
'city_name_eng' => string 'Bahrain City' (length=12)
'city_name_arabic' => string 'vgdg824762' (length=10)
'KW' =>
array (size=4)
'post_id' => int 7841
'country' => string 'KW' (length=2)
'city_name_eng' => string 'Kuwait City' (length=11)
'city_name_arabic' => string ' مدينة الكويت' (length=24)
The Code below merges the different arrays above.
<?php
// Make the cities unique. Remove duplicates form the inner array.
$uniques = [];
foreach($country_cities as $arr ) {
foreach( $arr as $v) {
if( !in_array($v, $uniques, false) ) {
$uniques[$v['country']] = $v;
}
}
}
var_dump($uniques);
Results logged show the code cuts out some of the arrays.
/Users/..... on line php:74:
array (size=2)
'BH' =>
array (size=4)
'post_id' => int 7885
'country' => string 'BH' (length=2)
'city_name_eng' => string 'Bahrain City' (length=12)
'city_name_arabic' => string 'vgdg824762' (length=10)
'KW' =>
array (size=4)
'post_id' => int 7841
'country' => string 'KW' (length=2)
'city_name_eng' => string 'Kuwait City' (length=11)
'city_name_arabic' => string ' مدينة الكويت' (length=24)
Please help figure out my error or suggest a better way to fix it.
If I understood you correctly, this should be the result you wanted to achieve.
Each country code will be included once, while the cities (based on post_id) will only be added once.
<?php
$result = [];
$processedIds = [];
foreach ($country_cities as $ccs) {
foreach ($ccs as $cc => $details) {
// If the country has not yet been added to
// the result we create an outer array.
if (!key_exists($cc, $result)) {
$result[$cc] = [];
}
$postId = $details['post_id'];
if (!in_array($postId, $processedIds)) {
// Add the unique city to country's collection
$result[$cc][] = $details;
// Keep track of the post_id key.
$processedIds[] = $postId;
}
}
}
print_r($result);
<?php
//...
$uniques = [];
foreach($country_cities as $data ) {
foreach( $data as $countryCode => $item) {
if( !array_key_exists($countryCode, $uniques) ) {
$uniques[$countryCode] = []; //Create an empty array
}
$targetArray = &$uniques[$countryCode];
if( !array_key_exists($item['post_id'], $targetArray) ) {
$targetArray[$item['post_id']] = $item; //Create an empty array
}
}
}
Maybe this code will help?

real_escape_string on multidimensional array

I'm trying to escape values from a multidimensional array for my database class. The code I have currently:
// Function to escape array values
private function esc_sql_arr(array $to_esc) {
$clean_arr = array();
foreach($to_esc as $k => $v) {
if(is_array($to_esc[$k])) {
foreach($to_esc[$k] as $key => $val) {
$k = $this->_mysqli->real_escape_string($k);
$key = $this->_mysqli->real_escape_string($key);
$val = $this->_mysqli->real_escape_string($val);
$clean_arr[$k][$key] = $val;
}
} else {
$k = $this->_mysqli->real_escape_string($k);
$v = $this->_mysqli->real_escape_string($v);
$clean_arr[$k] = $v;
}
}
return $clean_arr;
}
I'm assuming the following input example (it should be 'where', I purposely changed it to test the above method):
$args = array(
"table" => "t'1",
"data" => array(
"c'sf4;(" => 'xdfbxdrf',
'c2' => "'t'est'",
'cs' => 'hey'
),
"whe're" => array(
'test' => 'test1'
)
);
var_dump:
array (size=3)
'table' => string 't\'1' (length=4)
'data' =>
array (size=3)
'c\'sf4;(' => string 'xdfbxdrf' (length=8)
'c2' => string '\'t\'est\'' (length=10)
'cs' => string 'hey' (length=3)
'whe\'re' =>
array (size=1)
'test' => string 'test1' (length=5)
The code works without any issue. However, is this the right way to escape a multidimensional array?
I believe I might not have to use this method since I use prepared statements. Any feedback on using this is welcome.

Combine two arrays on php

Hello i am trying to combine two php array.
First one
array (size=13)
0 =>
object(stdClass)[30]
public 'ID' => string '1' (length=1)
public 'name' => string 'html5' (length=5)
public 'img' => string 'HTML5.png' (length=9)
1 =>
object(stdClass)[31]
public 'ID' => string '2' (length=1)
public 'name' => string 'css3' (length=4)
public 'img' => string 'css.png' (length=7)
2 =>
object(stdClass)[32]
public 'ID' => string '3' (length=1)
public 'name' => string 'php' (length=3)
public 'img' => string 'php1.png' (length=8)
3 =>
object(stdClass)[33]
public 'ID' => string '4' (length=1)
public 'name' => string 'java script' (length=11)
public 'img' => string 'javascript.png' (length=14)
Second one
array (size=3)
0 =>
object(stdClass)[26]
public 'ID' => string '1' (length=1)
public 'IDuser' => string '1' (length=1)
public 'IDskill' => string '1' (length=1)
1 =>
object(stdClass)[27]
public 'ID' => string '2' (length=1)
public 'IDuser' => string '1' (length=1)
public 'IDskill' => string '3' (length=1)
2 =>
object(stdClass)[28]
public 'ID' => string '3' (length=1)
public 'IDuser' => string '1' (length=1)
public 'IDskill' => string '4' (length=1)
ID from first array is equal to IDskill from second array. I am trying to combine to create new array if IDskill and ID are same, with something like this in new array
public 'ID' => string '1' (length=1)
public 'name' => string 'html5' (length=5)
public 'img' => string 'HTML5.png' (length=9)
===>New field public 'MATCH' => string '1' (length=9)
use array_merge() function
<?php
$a1=array("red","green");
$a2=array("blue","yellow");
print_r(array_merge($a1,$a2));
?>
or
<?php
$fname=array("Peter","Ben","Joe");
$age=array("35","37","43");
$c=array_combine($fname,$age);
print_r($c);
?>
Try this ( where a1 is first array and a2 is second one and $result is final, merged array ):
$result = array();
$n=0;
foreach($a1 as $k=>$v) {
if (isset($v->ID) && isset($a2[$n]->ID) && $v->ID==$a2[$n]->ID) {
$result[$n]=$v;
$result[$n]->MATCH=1;
}
$n++;
}
print_r($result);
You could use array_map and anonymous functions:
<?php
$first_array = array(...);
$second_array = array(...);
// Anonymous function to extract the IDskills from the second array:
$get_IDs = function($element) {
return($element->IDskill);
};
// Array of (just) IDskills of the second array:
$IDs = array_map($get_IDs, array_filter($second_array, function($element) {
// Anonymous function to filter $second_array elements without IDskill:
return(isset($element->IDskill));
}));
// Another anonymous function that returns a new array with elements from
// $first_array with the new MATCH property.
// use(&$IDs) makes $IDs available inside the function scope:
$check_match = function($element) use(&$IDs) {
// We use clone because we don't want to modify the original array values:
$match_element = clone $element;
if(isset($match_element->ID))
$match_element->MATCH = in_array($match_element->ID, $IDs);
else
$match_element->MATCH = false;
return($match_element);
};
$match = array_map($check_match, $first_array);
?>
If you don't want to use the two first anonymous functions or don't want to create the $IDs array you can replace use(&$IDs) for use(&$second_array) and the line:
$match_element->MATCH = in_array($match_element->ID, $IDs);
for a loop that iterates through $second_array elements to check whether any of them has an IDskill equal to $match_element->ID.
Moreover, you may not need to check if IDskill and ID exist if all the elements in the arrays have the same properties.
let me add my two cents, how to find element matching ID from the 1st array in the second one
$tmp = array_filter($array2, function($ar2) use ($ID) { return $ar2->IDskill === $ID; });
if ($tmp) // Found
else // Not found
all code may be
result = array()
foreach ($array1 as $item) {
$ID = $item->ID;
$tmp = array_filter($array2, function($ar2) use ($ID) { return $ar2->IDskill === $ID; });
if ($tmp) { // Found
$tmp = $item;
$tmp->MATCH = 1;
result[] = $tmp;
}
}

How to remove a specific index from a multidimensional array in php

I am trying to remove pieces of a multidimensional array if a certain condition is met. The array can be as shown below, call it $friends:
array (size=3)
0 =>
array (size=1)
0 =>
object(stdClass)[500]
public 'id' => int 2
public 'first_name' => string 'Mary' (length=4)
public 'last_name' => string 'Sweet' (length=5)
1 =>
array (size=1)
0 =>
object(stdClass)[501]
public 'id' => int 9
public 'first_name' => string 'Joe' (length=3)
public 'last_name' => string 'Bob' (length=3)
2 =>
array (size=1)
0 =>
object(stdClass)[502]
public 'id' => int 1
public 'first_name' => string 'Shag' (length=4)
public 'last_name' => string 'Well' (length=4)
I have a function called is_followed, that let's me see if the id of one of the people in the array is being followed by the "user". The code I am trying is:
//remove followed friends from the $friends array
$i=0;
foreach($friends as $friend) {
foreach($friend as $f) {
if(Fanfollow::is_followed($id,$f->id)) {
unset($friend[$i]);
}
}
$i++;
}
The $id is the id of the current user.
However, this is not working. I know that using unset on $friend and not $friends is probably the issue. But using unset on $friends also won't work, because it is the higher level array. Any ideas? Thank you.
If you're trying to take down the first parent keys, use the first foreach keys instead:
foreach($friends as $i => $friend) {
// ^ assign a key
foreach($friend as $f) {
if(Fanfollow::is_followed($id,$f->id)) {
unset($friends[$i]);
// unset this
}
}
}
Or if only for that single friend:
foreach($friends as $friend) {
foreach($friend as $i => $f) {
// ^ this key
if(Fanfollow::is_followed($id,$f->id)) {
unset($friend[$i]);
// unset this
}
}
}
array_filter comes to the rescue:
array_filter($friend,
function($f) use($id) { return Fanfollow::is_followed($id,$f->id)); }
);
Though the solution with foreach is legit, array_filteris much more clear and sematically correct.

Unique PHP Array

How can I check if the values are unique in an array based on the key value? Below is the out put of the array. I want to remove duplicate values based on the "id" key. If you check below, the 2nd & 3rd array are same except for the "role" value. Because of this, array_unique is not working on this array.
array
0 =>
array
'id' => string '1521422' (length=7)
'name' => string 'David Alvarado' (length=14)
'role' => string 'associate producer ' (length=20)
1 =>
array
'id' => string '0098210' (length=7)
'name' => string 'Cristian Bostanescu' (length=19)
'role' => string 'line producer: Romania (as Cristi Bostanescu)' (length=46)
2 =>
array
'id' => string '1266015' (length=7)
'name' => string 'Bruno Hoefler' (length=13)
'role' => string 'co-producer ' (length=13)
3 =>
array
'id' => string '1266015' (length=7)
'name' => string 'Bruno Hoefler' (length=13)
'role' => string 'executive producer ' (length=20)
4 =>
array
'id' => string '1672379' (length=7)
'name' => string 'Alwyn Kushner' (length=13)
'role' => string 'associate producer ' (length=20)
Try this one:
<?php
$array = array(
array('id' => 1, 'text' => 'a'),
array('id' => 2, 'text' => 'b'),
array('id' => 1, 'text' => 'c'),
array('id' => 3, 'text' => 'd')
);
$array = array_filter($array, function ($item) {
static $found = array();
if (isset($found[$item['id']])) return false;
$found[$item['id']] = true;
return true;
});
var_dump($array);
This works as of PHP 5.3 (because of the closure and static statement).
cf. http://php.net/manual/en/function.array-filter.php for more information. I tested the statement within loops, it works there as well.
Basically you want to implement a variation of array_unique that does what you want:
function array_unique_multi($arr,$key='id') {
// $arr is the array to work on
// $key is the key to make unique by
$ret = Array();
foreach($arr as $v) {
if( !isset($ret[$v[$key]])) $ret[$v[$key]] = $k;
}
return array_values($ret);
}
You can use this code:
// assuming $arr is your original array
$narr = array();
foreach($arr as $key => $value) {
//$narr[json_encode($value)] = $key;
if (!array_key_exists($value["id"], $narr))
$narr[$value["id"]] = $key;
}
$narr = array_flip($narr);
foreach($arr as $key => $value) {
if (!array_key_exists($key, $narr))
unset($arr[$key]);
}
print_r($arr); // will have no duplicates

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