I have been trubling with session array part...as my session array have 3 different value coming from database ...easy ...medium ...hard....how i count these specificly?
Session::push('getscoresession',$getscore);
Session::push('level',$level);
$getsession = [ 'qid' => $getidvalue, 'answer' => $getanswervalue];
Session::push('answer', $getsession);
$score = array_count_values(Session::get("level"));
return view('score',compact('score'));
getting this error message: array_count_values(): Can only count STRING and INTEGER values!`
Here is your solution:
$array = [
0 => 'easy',
1 => 'easy',
2 => 'easy',
3 => 'medium',
4 => 'medium',
5 => 'medium',
6 => 'hard',
7 => 'hard',
8 => 'hard',
9 => 'hard',
10 => 'hard'
];
echo "<pre>";
print_r($array);
var_dump(array_count_values($array));
Another solution:
// This is static
$stats = [
'easy' => 0,
'medium' => 0,
'hard' => 0,
];
// Alternatively dynamic way:
$a = array_flip(array_unique($array));
$b = array_fill_keys(array_keys($a), 0);
foreach($array as $value) {
$stats[$value]++; // Static Way
$b[$value]++; // Dynamic way
}
echo "<pre>";
print_r($stats);
print_r($b);
exit;
You can use http://www.writephponline.com/ to execute above code.
In your blad file:
Use foreach
#foreach($data as $key => $value)
{{ $key .'-'. $value }}
#endforeach
Let me know if you still have any query.
It's may be because you may have null values in your array.
Possible solutions :
Either remove null values from your array.
Or use array_filter.
See this example:
https://repl.it/repls/TameFarLine
Related
I have this array :
(
[id] => block_5df755210d30a
[name] => acf/floorplans
[data] => Array
(
[floorplans_0_valid_for_export] => 0
[floorplans_0_title] => title 1
[floorplans_0_house_area] => 40m²
[floorplans_0_bedrooms] => 1
[floorplans_1_valid_for_export] => 1
[floorplans_1_title] => title xx
[floorplans_1_house_area] => 90m²
[floorplans_1_bedrooms] => 2
[floorplans_2_valid_for_export] => 1
[floorplans_2_title] => title 2
[floorplans_2_house_area] => 50m²
[floorplans_2_bedrooms] => 1
[floorplans] => 3
)
)
As we can see in the data, we have fields (floorplans_X_valid_for_export).
What I want to do is to get the data only when this field equal to 1.
So from the given example, I want to keep only these fields:
[floorplans_1_valid_for_export] => 1
[floorplans_1_title] => title xx
[floorplans_1_house_area] => 90m²
[floorplans_1_bedrooms] => 2
[floorplans_2_valid_for_export] => 1
[floorplans_2_title] => title 2
[floorplans_2_house_area] => 50m²
[floorplans_2_bedrooms] => 1
This is an odd schema, but it can be done by iterating through the array and searching for keys where "valid_for_export" equals 1, and then using another array of field "stubs" to get the associated items by a unique identifier of X in floorplans_X_valid_for_export
$array = [
'floorplans_0_valid_for_export' => 0,
'floorplans_0_title' => 'title 1',
'floorplans_0_house_area' => '40m²',
'floorplans_0_bedrooms' => 1,
'floorplans_1_valid_for_export' => 1,
'floorplans_1_title' => 'title xx',
'floorplans_1_house_area' => '90m²',
'floorplans_1_bedrooms' => '2',
'floorplans_2_valid_for_export' => 1,
'floorplans_2_title' => 'title 2',
'floorplans_2_house_area' => '50m²',
'floorplans_2_bedrooms' => 1,
'floorplans' => 3
];
$stubs = [
'floorplans_%s_valid_for_export',
'floorplans_%s_title',
'floorplans_%s_house_area',
'floorplans_%s_bedrooms'
];
$newArr = [];
foreach ($array as $key => $value) {
if (strpos($key, 'valid_for_export') && $array[$key] == 1) {
$intVal = filter_var($key, FILTER_SANITIZE_NUMBER_INT);
foreach ($stubs as $stub) {
$search = sprintf($stub, $intVal);
if (isset($array[$search])) {
$newArr[$search] = $array[$search];
} else {
// key can't be found, generate one with null
$newArr[$search] = null;
}
}
}
}
echo '<pre>';
print_r($newArr);
Working: http://sandbox.onlinephpfunctions.com/code/23a225e3cefa2dc9cc97f53f1cbae0ea291672c0
Use a parent loop to check that the number-specific valid_for_export value is non-empty -- since it is either 0 or non-zero.
If so, then just push all of the associated elements into the result array.
Some reasons that this answer is superior to the #Alex's answer are:
Alex's parent loop makes 13 iterations (and the same number of strpos() calls); mine makes just 3 (and only 3 calls of empty()).
$array[$key] is more simply written as $value.
Sanitizing the $key to extract the index/counter is more overhead than necessary as demonstrated in my answer.
Code (Demo)
$array = [
'floorplans_0_valid_for_export' => 0,
'floorplans_0_title' => 'title 1',
'floorplans_0_house_area' => '40m²',
'floorplans_0_bedrooms' => 1,
'floorplans_1_valid_for_export' => 1,
'floorplans_1_title' => 'title xx',
'floorplans_1_house_area' => '90m²',
'floorplans_1_bedrooms' => '2',
'floorplans_2_valid_for_export' => 1,
'floorplans_2_title' => 'title 2',
'floorplans_2_house_area' => '50m²',
'floorplans_2_bedrooms' => 1,
'floorplans' => 3
];
$labels = ['valid_for_export', 'title', 'house_area', 'bedrooms'];
$result = [];
for ($i = 0; $i < $array['floorplans']; ++$i) {
if (!empty($array['floorplans_' . $i . '_valid_for_export'])) {
foreach ($labels as $label) {
$key = sprintf('floorplans_%s_%s', $i, $label);
$result[$key] = $array[$key];
}
}
}
var_export($result);
Output:
array (
'floorplans_1_valid_for_export' => 1,
'floorplans_1_title' => 'title xx',
'floorplans_1_house_area' => '90m²',
'floorplans_1_bedrooms' => '2',
'floorplans_2_valid_for_export' => 1,
'floorplans_2_title' => 'title 2',
'floorplans_2_house_area' => '50m²',
'floorplans_2_bedrooms' => 1,
)
With that constructed data it might be hard (not impossble tho), hovewer i would suggest to change it to multidimensional arrays so you have something like:
[floorplans][0][valid_for_export] => 0
[floorplans][0][title] => title 1
[floorplans][0][house_area] => 40m²
[floorplans][0][bedrooms] => 1
[floorplans][1][valid_for_export] => 1
[floorplans][1][title] => title xx
[floorplans][1][house_area] => 90m²
Rought sollution
It is not the best approach, but it should work if you dont need anything fancy, and know that structure of data wont change in future
$keys = [];
$for($i=0;$i<$array['floorplans'];++$i) {
if(isset($array['floorplans_'.$i.'_valid_for_export']) && $array['floorplans_'.$i.'_valid_for_export']===1) {
$keys[] = $i;
}
}
print_r($keys);
I have the following given associative array, showing me how many items I have of each key.
'story' => 10
'image' => 20
'video' => 30
'audio' => 40
I'm trying to transform the array so I can use the key string inside my value, I want to get the following result
'story' => 'Story (10)'
'image' => 'Image (20)'
'video' => 'Video (30)'
'audio' => 'Audio (40)'
I've tried
I've tried the following method, but it resets the keys to indexes (0, 1, 2, 3)
return array_map(function ($key, $value) {
return $key . "(" . $value . ")";
}, array_keys($mergedArray), $mergedArray);
Try using array_walk() instead of array_map()
array_walk($mergedArray, function (&$value, $key) { $value = ucwords($key) . "($value)"; });
print_r($mergedArray);
Working demo
Output:
Array
(
[story] => Story(10)
[image] => Image(20)
[video] => Video(30)
[audio] => Audio(40)
)
$arr = [
"story" => 10,
"image" => 20,
"video" => 30,
"audio" => 40
];
foreach($arr as $key => $value) {
$arr[$key] = ucfirst($key)." (".$value.")";
}
Here is the demo
I want to know that is there a way to insert certain elements of an array into a new array. I mean I have an array containing 10 objects. Each object has 3 or four fields for example id, name , age , username. now I want to insert the id's of all the objects into the new array with a single call.Is there anyway to do that.
$array = [
[0] => [
id =>
name =>
],
[1] = > [
id =>
name =>
]
]
and so on now I want to insert all the id's of all the object into a new array with a single call. Is there a way to do that?
Use array_map() function.
Here is your solution:-
$ids = array_map( function( $arr ){
return $arr["id"];
}, $arr );
echo '<pre>'; print_r($ids);
A basic foreach loop will do the job just fine
$firstArray = array(
array(
'id' => 1,
'name' => 'abc'
),
array(
'id' => 2,
'name' => 'def'
),
array(
'id' => 3,
'name' => 'gh'
)
);
$onlyIds = array();
$onlyKeys = array();
//To get the array value 'id'
foreach($firstArray as $value){
$onlyIds[] = $value['id'];
}
//To get the array keys
foreach($firstArray as $key => $value){
$onlyKeys[] = $key;
}
You could use array_walk which could be considered a "single call"
$array = array(0 => array('id', 'name', 'age'), 1 => array('id', 'name', 'age'));
array_walk($array, function($item, $key) {
// $key is 0 or 1
// $item is either id, name, age
});
You can use array_column.
$arr = [ ['id' => 1, 'username' => 'a'], ['id' => 2, 'username' => 'b'] ];
$ids = array_column($arr, 'id')
$ids == [1, 2]
I have a requirement to allow my end users to input formula much like a spreadsheet. I have an array like this:
$table = array(
1=>array(
"id"=>1,
"Name"=>"Regulating",
"Quantity"=>"[2]Quantity+[3]Value",
"Value"=>"[2]Cost"
),
...)
The first level array key is always the same value as the id key in that array.
A tabulated example follows:
id Name Quantity Value
1 Regulating [2]Quantity+[3]Value [2]Cost
2 Kerbs 3 6
3 Bricks 9 7
4 Sausages [3]Cost 3
5 Bamboo [4]Quantity [7]Cost
6 Clams [4]Quantity NULL
7 Hardcore [3]Quantity*0.5 12
8 Beetles [6]Quantity*[4]Value [2]Value
The Quantity and Value keys represent formula which reference the [id] and either Quantity, Value or Cost.
Cost is derived by multiplying the Value and Quantity.
I am using:
preg_match_all("/\[(.*?)\]([A-Z]*[a-z]*)/", $string, $matches, PREG_SET_ORDER);
which outputs an array like so for[1][Quantity]:
Array
(
[0] => Array
(
[0] => [2]Quantity
[1] => 2
[2] => Quantity
)
[1] => Array
(
[0] => [3]Value
[1] => 3
[2] => Value
)
)
Iterating through the table using something similar to:
$calcString = $table[1]['Quantity'];`
foreach ($matches as $match) {
$calcString = str_replace($match[0], $table[$match[1]][$match[2]], $calcString);
}
I can get the string to be calculated and am using a matheval class to do the sum.
For example
[1]Quantity = [2]Quantity + [3]Value
[2]Quantity = 3
[3]Value = 7 // [1]Quantity = 3 + 7 = 10
[1]Value = [2]Cost
[2]Cost = [2]Quantity * [2]Value // 3 * 6 = 18
Basically the variables in the table refer to other [id]key in the same table.
But here is my issue
I need to resolve references to other parts of the table (which may or may not themselves be formula) to fill in the blanks. This is outside my comfort zone and I would appreciate any advice (or even better functional code) which provides enlightenment on how I might be able to achieve this.
Thanks
Deep down, you already know how to solve this, you're just intimidated by the task.
A recursive approach would be to expand references instantly. For example,
expand('[1]Value') # returns '[2]Cost'
expand('[2]Cost') # returns '[2]Quantity * [2]Value'
expand('[2]Quantity') # returns 3
expand('[2]Value') # returns 6
eval('3 * 6')
# returns 18
# returns 18
# returns 18
An iterative (non-recursive) approach is to expand one reference at a time and repeat until there are unresolved references in the string.
expand('[1]Value') // returns '[2]Cost'
expand('[2]Cost') // returns '[2]Quantity + [2]Value'
expand('[2]Quantity + [2]Value') // returns 3 for [2]Quantity
expand('3 * [2]Value') // returns 6 for [2]Value
eval('3 * 6')
# returns 18
Normally, I prefer iterative solutions, because they're much less prone to stack overflows. However, recursive solutions are usually easier to write.
Here's a quickly slapped-together recursive evaluator: https://gist.github.com/stulentsev/b270bce4be67bc1a96ae (written in ruby, though)
If calcString's are reasonably sized and you don't expect replacements to get too elaborate, you could use a while loop to simulate the recursion. Here's an example that outputs the string along the way as it is being modified:
$calcString = $table[8]['Quantity'];
preg_match_all("/\[(.*?)\]([A-Z]*[a-z]*)/", $calcString, $matches, PREG_SET_ORDER);
print_r($calcString . "\n");
while (!empty($matches)){
foreach ($matches as $match) {
preg_match_all("/\[(.*?)\](Cost)/", $match[0], $matchCost, PREG_SET_ORDER);
if (!empty($matchCost)){
$cost = $table[$matchCost[0][1]]['Quantity'] . "*" . $table[$matchCost[0][1]]['Value'];
$calcString = str_replace($match[0], $cost, $calcString);
} else {
$calcString = str_replace($match[0], $table[$match[1]][$match[2]], $calcString);
}
print_r($calcString . "\n");
}
preg_match_all("/\[(.*?)\]([A-Z]*[a-z]*)/", $calcString, $matches, PREG_SET_ORDER);
}
Output:
[6]Quantity*[4]Value
[4]Quantity*[4]Value
[4]Quantity*3
[3]Cost*3
9*7*3
The table variable:
$table = array(
1 => array(
"id" => 1,
"Name" => "Regulating",
"Quantity" => "[2]Quantity+[3]Value",
"Value" => "[2]Cost"
),
2 => array(
"id" => 2,
"Name" => "Kerbs",
"Quantity" => 3,
"Value" => 6
),
3 => array(
"id" => 3,
"Name"=>"Bricks",
"Quantity"=> 9,
"Value"=> 7
),
4 => array(
"id" => 2,
"Name" => "Sausages",
"Quantity" => "[3]Cost",
"Value" => 3
),
5 => array(
"id" => 2,
"Name" => "Bamboo",
"Quantity" => "[4]Quantity",
"Value" => "[7]Cost"
),
6 => array(
"id" => 2,
"Name" => "Clams",
"Quantity" => "[4]Quantity",
"Value" => NULL
),
7 => array(
"id" => 2,
"Name" => "Hardcore",
"Quantity" => "[3]Quantity*0.5",
"Value" => 12
),
8 => array(
"id" => 2,
"Name" => "Beetles",
"Quantity" => "[6]Quantity*[4]Value",
"Value" => "[2]Value"
)
);
A dangerously easy, and your-situation-specific well-performable solution!
<?php
class solver {
private
// The final output array
$arr_evaled,
// When a cell gains its final value, the corresponding entry in the following array gets marked as being done!
$arr_done;
private $solving_iterations_count;
public function solver($array) {
$this->arr_done = array();
foreach($array as $k => $arr)
$this->arr_done[$k] = array('Quantity' => false, 'Value' => false);
// Firstly,expand all of the "[x]Cost"s to "([x]Quantity*[x]Value)"s!
$this->arr_evaled = array_map(
function($v){ return preg_replace('#\[(\d*?)\]Cost#', '([$1]Quantity*[$1]Value)', $v); },
$array
);
$this->solving_iterations_count = 0;
$this->solve();
}
private function isDone() {
foreach($this->arr_done as $a)
if($a['Quantity'] == false || $a['Value'] == false)
return false;
return true;
}
private function isCellDone($id, $fieldName) {
return $this->arr_done[$id][$fieldName];
}
private function markCellAsDone($id, $fieldName, $evaluation) {
$this->arr_done[$id][$fieldName] = true;
$this->arr_evaled[$id][$fieldName] = $evaluation;
}
private function isEvaluable($str) {
return preg_match('#^[0-9*+-\/\(\)\.]*$#', $str) == 1 || strtolower($str)=='null';
}
private function replace($from, $to) {
foreach($this->arr_evaled as &$arr) {
$arr['Quantity'] = str_replace($from, $to, $arr['Quantity']);
$arr['Value'] = str_replace($from, $to, $arr['Value']);
}
}
private function solve() {
$isSolvable = true; // YOUR TODO: I believe coding this part is also fun!) (e.g: check for "reference cycles")
if(!$isSolvable) return null;
while( !$this->isDone() )
{
foreach($this->arr_evaled as $arr) {
foreach(['Quantity', 'Value'] as $fieldName) {
if(!$this->isCellDone($arr['id'], $fieldName)) {
if($this->isEvaluable($arr[$fieldName])) {
$evaluation = eval("return {$arr[$fieldName]};");
$this->markCellAsDone($arr['id'], $fieldName, $evaluation);
$this->replace("[{$arr['id']}]$fieldName", "$evaluation");
}
}
}
}
$this->solving_iterations_count++;
}
foreach($this->arr_evaled as &$row)
$row['Cost'] = $row['Quantity'] * $row['Value'];
return $this->arr_evaled;
}
public function print_tabulated() {
echo "The count of solving iterations: {$this->solving_iterations_count}<br/><br/>";
echo '<table border="1"><tr><th>id</th><th>Name</th><th>Quantity</th><th>Value</th><th>Cost</th></tr>';
foreach($this->arr_evaled as $arr)
echo "<tr><td>{$arr['id']}</td><td>{$arr['Name']}</td><td>{$arr['Quantity']}</td><td>{$arr['Value']}</td><td>{$arr['Cost']}</td></tr>";
echo '</table>';
}
}
// Testing
$arr = array(
1 => array( 'id' => 1, 'Name' => 'Regulating', 'Quantity' => '[2]Quantity+[3]Value', 'Value' => '[2]Cost' ),
2 => array( 'id' => 2, 'Name' => 'Kerbs', 'Quantity' => '3', 'Value' => '6' ),
3 => array( 'id' => 3, 'Name' => 'Bricks', 'Quantity' => '9', 'Value' => '7' ),
4 => array( 'id' => 4, 'Name' => 'Sausages', 'Quantity' => '[3]Cost', 'Value' => '3' ),
5 => array( 'id' => 5, 'Name' => 'Bamboo', 'Quantity' => '[4]Quantity', 'Value' => '[7]Cost' ),
6 => array( 'id' => 6, 'Name' => 'Clams', 'Quantity' => '[4]Quantity', 'Value' => 'NULL' ),
7 => array( 'id' => 7, 'Name' => 'Hardcore', 'Quantity' => '[3]Quantity*0.5', 'Value' => '12' ),
8 => array( 'id' => 8, 'Name' => 'Beetles', 'Quantity' => '[6]Quantity*[4]Value', 'Value' => '[2]Value' ),
);
echo '<pre>';
(new solver($arr))->print_tabulated();
Here is the output:
I'm trying to add a key and value (associative) from an array to another array, where one specific key and value match. Here are the two arrays:
$array1 = array(
1 => array(
'walgreens' => 'location',
'apples' => 'product1',
'oranges' => 'product2'
),
2 => array(
'walmart' => 'location',
'apples' => 'product1',
'oranges' => 'product2',
'milk' => 'product3'
)
);
$array2 = array(
1 => array(
'walgreens' => 'location',
'apples' => 'product1',
'oranges' => 'product2',
'bananas' => 'product3',
)
);
Here is the attempt I made at modifying $array1 to have key 'bananas' and value 'product3':
$dataCJ = getCJItem($isbn);
foreach ($array1 as $subKey => $subArray) {
foreach($subArray as $dkey => $dval){
foreach($array2 as $cjk => $cjv){
foreach($cjv as $cjkey => $cjval){
if($dval['walgreens'] == $cjval['walgreens']){
$dval['bananas'] = $cjval['bananas'];
}
}
}
}
}
This doesn't work. How can I fix this?
Change => $dval to => &$dval. Currently you are creating and writing to a new variable and the update will not work in-place.
I would look at array_merge() function!
Here is a start with the PHP doc.
For your specific case, you could do the following :
foreach($array1 as $key1 => $values1){
foreach($array2 as $key2 => $values2){
if($values1[0] == $values2[0]){
$array1[$key1] = array_merge($values1, $values2);
}
}
}
Note to simplify the problem you should inverse the first key=> value pair of the array.
Having an array this way would be a lot simper :
array(
'location' => "The location (eg:walgreens)",
//...
);
This way you could change the comparison to the following instead :
$values1['location'] == $values2['location']
Which would be safer in the case the array is not built with the location as the first pair.