I have information on some items:
Actually i have this array:
$datas = array(
array(
'name' => "Banana",
'color' => "yellow",
'scientificName' => "Banana",
'weight' => "300",
'quantity' => "3500",
'origin' => "Africa"
),
array (...)
);
I will need to call this function/array like this:
Example 1
// echo getDatas($what_I_know, "what_I_want");
// Must return yellow.
echo getDatas("Banana", "color");
Example 2
// echo getDatas($what_I_know, "what_I_want");
// Must return 3500.
echo getDatas("yellow", "quantity");
All the keys and data will be unique.
Question
How can I proceed?
You could use a function like this:
# parameters: $datas array, the value you've got, the value you want to find
function getData($datas, $got, $to_find) {
foreach ($datas as $d) {
# check if the value exists in the array
if (array_search($got, $d)) {
# it does! Make sure the property we want is also there
if (in_array($to_find, array_keys($d))) {
return $d[$to_find];
}
else {
return "No value exists for $to_find";
}
}
}
return "No data found for $got.";
}
$datas = array(
array(
'name' => "Banana",
'color' => "yellow",
'scientificName' => "Banana",
'weight' => "300",
'quantity' => "3500",
'origin' => "Africa"
),
array (
'name' => "Apple",
'color' => "red",
'scientificName' => "Apple",
'weight' => "100",
'quantity' => "200",
'origin' => "England"
)
);
echo getData($datas, "Banana", "color") . PHP_EOL;
echo getData($datas, "yellow", "quantity") . PHP_EOL;
echo getData($datas, "red", "weight") . PHP_EOL;
echo getData($datas, "Mongoose", "origin") . PHP_EOL;
Output:
yellow
3500
100
No data found for Mongoose.
This is untested but should work.
foreach( $datas as $dat ) {
foreach( $dat as $k => $d ) {
if ( $what_i_know == $d ) {
return $dat[$what_i_want];
}
}
}
Related
I would like in php to stop duplicate messages by logging msgid to a text file using something like this file_put_contents("a.txt", implode(PHP_EOL, $array1), FILE_APPEND);
and then converting it back to an array using $array1 = file("a.txt"); I would also like to delete messages from the array if they are from a set name
I know how to convert json to an array $array1 = json_decode($json, true);
Json Reply from an api that I cannot control
{
"API": "Online",
"MSG": [
{
"info": {
"name": "example"
},
"msg": "example",
"msgid": "example"
},
{
"info": {
"name": "example"
},
"msg": "example",
"msgid": "example"
}
]
}
Hi use the following code, first test it out accordingly
$uniqueMessages = unique_multidim_array($messages,'msg');
Usage : Pass the key as the 2nd parameter for which you need to check the uniqueness of array.
<?php
/* Function to handle unique assocative array */
function unique_multidim_array($array, $key) {
/* temp array to hold unique array */
$temp_array = array();
/* array to hold */
$i = 0;
/* array to hold the key for unique array */
$key_array = array();
foreach($array as $val) {
if (!in_array($val[$key], $key_array)) {
$key_array[$i] = $val[$key];
$temp_array[$i] = $val;
}
$i++;
}
return $temp_array;
}
$messages = array(
0 => array(
'info' => array(
'name' => 'example'
),
'msg' => 'example',
'msgid' => 'example'
),
1 => array(
'info' => array(
'name' => 'example 1'
),
'msg' => 'example 1',
'msgid' => 'example 1'
),
3 => array(
'info' => array(
'name' => 'example'
),
'msg' => 'example',
'msgid' => 'example'
)
);
echo '<pre>';
echo '*****************BEFORE***********************<br/>';
var_dump($messages);
echo '*****************AFTER***********************<br/>';
$uniqueMessages = unique_multidim_array($messages,'msg');
var_dump($uniqueMessages);
This works for me this is an modded function click here for original function
function RemoveElementByArray($array, $key, $seen){
foreach($array as $subKey => $subArray){
if(in_array($subArray[$key], $seen)){
unset($array[$subKey]);
}
}
return $array;
}
Example:
$array = array(
array("id" => "1", "name" => "example1"),
array("id" => "2", "name" => "example2"),
array("id" => "3", "name" => "example3"));
$SeenArray = array("1", "2");
print_r(RemoveElementByArray($array, "id", $SeenArray));
Result:
Array
(
[2] => Array
(
[id] => 3
[name] => example3
)
)
I have tried to loop this array but I still get error
I have an array like this:
1 => ["name"=>"A", "related"=>[
["signal"=>"A1", "color"=>"green"],
["signal"=>"A2", "color"=>"lime"],
["signal"=>"A3","color"=>"yellowGreen"]
]]
2 => ["name"=>"B", "related"=>[
["signal"=>"B1", "color"=>"Red"],
["signal"=>"B2", "color"=>"Pink"]
]]
How to display as - A : Green, lime, yellowGreeb
- B : Red, Pink
This is my code that I've tried to display as above format
foreach($arr as $key => $value){
echo $value["name"];
foreach($value["related"] as $k){
echo $k["color"] . ",";
}
}
It throw error this array dont has $value["related"] index. But It can echo the $value["name"]???
Thank you!
Find the solution as below:
$array = [1 => [
"name" => "A",
"related" => [
["signal" => "A1", "color" => "green"],
["signal" => "A2", "color" => "lime"],
["signal" => "A3", "color" => "yellowGreen"]
]
],
2 => ["name" => "B", "related" => [
["signal" => "B1", "color" => "Red"],
["signal" => "B2", "color" => "Pink"]
]]
];
foreach ($array as $ar) {
$new_arr = array_column($ar['related'], 'color');
$required_string = implode(', ', $new_arr);
echo $ar['name'].' : ' .$required_string;
echo "<br />";
}
For PHP Version < 5.5 you can use below solution:
foreach ($array as $ar) {
$new_arr = array_map(function ($value) {
return $value['color'];
}, $ar['related']);
$required_string = implode(', ', $new_arr);
echo $ar['name'].' : ' .$required_string;
echo "<br />";
}
you can found more detail about foreach loop at http://php.net/manual/en/control-structures.foreach.php
I want to get calleridnum without using array . Is this possible?
or is there other way to do this ?
I have this code :
$participants = [
[ 'calleridnum' => 1,
'test' => 'yay'
],
[ 'calleridnum' => 2,
'test' => 'yay'
],
[ 'calleridnum' => 3,
'test' => 'yay'
]
];
$conferance_participants = [
[ 'uid' => 1,
'test' => 'yay2',
'dit' => 'deze'
],
[ 'uid' => 2,
'test' => 'test',
'dit' => 'wew'
]
];
foreach ($participants as $key=>$p) {
foreach ($conferance_participants as $key=>$cp) {
if ($p['calleridnum'] == $cp['uid']) {
$calleridnum[] = $p['calleridnum'];
}
}
}
print_r( $calleridnum );
My output is:
Array ( [0] => 1 [1] => 2 )
but I want the output to be like this
1,2
Use implode() outside of foreach loop
echo $str = implode (",", $calleridnum);
Try this: Implode your array to be converted into string.
$calleridnum= [];
foreach ($participants as $key=>$p) {
foreach ($conferance_participants as $key=>$cp) {
if ($p['calleridnum'] == $cp['uid']) {
$calleridnum[] = $p['calleridnum'];
}
}
}
$result = implode(',', $calleridnum);
echo $result;
I'll simply use array_intersect,array_column along with implode as
echo implode(',', array_intersect(array_column($conferance_participants,'uid'), array_column($participants,'calleridnum')));
Demo
I have two arrays that look like this:
(this one is ordered by value_max)
$max_values = [
["name" => "john", "id" => 5, "value_max" => 500],
["name" => "john", "id" => 3, "value_max" => 200],
...
];
$min_values = [
["name" => "john", "id" => 5, "value_min" => 100],
["name" => "john", "id" => 3, "value_min" => 150],
...
];
And I need to have a final array like this:
(This one stills need to be ordered by value_max, so I assume I could just overwrite the first array with the calculations done with the second)
$max_and_difference_values = [
["name" => "john", "id" => 5, "value_max" => 500, "difference_value" => 400],
["name" => "john", "id" => 3, "value_max" => 200, "difference_value" => 50 ],
...
];
My question is pretty straight: What is the best/effective way to run through both first arrays and build the last one. Assuming that the size of the arrays can be of around 150 elements.
To avoid looping through all arrays repeatedly, index one array by the field you want to merge on, i.e. the 'id' key:
$second = array_combine(array_map(function ($i) { return $i['id']; }, $second_array), $second_array);
Then looping through the other and comparing the values is pretty easy:
$third = array();
foreach ($first_array as $i) {
$third[] = $i + array('difference_value' => $i['value_max'] - $second[$i['id']]['value_min']);
}
If it's guaranteed that both arrays will have exactly matching keys, you don't even need the first step and just go by already existing keys.
This will sort your array. So you can sort the second array.
<?php
$min_values = array(
array("name" => "john", "id" => 5, "value_min" => 100),
array("name" => "john", "id" => 3, "value_min" => 150),
);
function aasort (&$array, $key) {
$sorter=array();
$ret=array();
reset($array);
foreach ($array as $ii => $va) {
$sorter[$ii]=$va[$key];
}
asort($sorter);
foreach ($sorter as $ii => $va) {
$ret[$ii]=$array[$ii];
}
$array=$ret;
}
aasort($min_values,"id");
echo "<pre>";
print_r($min_values);
echo "</pre>";
?>
And then you can use the logic what Alessandro Minoccheri mentioned.
$arr = array();
for ($i=0; $i<count($first_array);$i++){
$arr['name'] = $first_array[$i]['name'];
$arr['id'] = $first_array[$i]['id'];
$arr['value_max'] = $first_array[$i]['value_max'];
$arr['difference_value'] = $first_array[$i]['value_max']-$second[$i['id']]['value_max'] ;
}
As you have not shared how the second array with the minimum values is ordered (in itself and relative to the maximum values array), I'd say, index the minimum values by the id entry and then do the calculation in a second iteration. It should be fast enough, 150 elements is just "nothing":
$max_values = [
["name" => "john", "id" => 5, "value_max" => 500],
["name" => "john", "id" => 3, "value_max" => 200],
];
$min_values = [
["name" => "john", "id" => 5, "value_min" => 100],
["name" => "john", "id" => 3, "value_min" => 150],
];
$min_values_by_id = [];
foreach($min_values as $min) {
$min_values_by_id[$min['id']] = $min['value_min'];
}
$max_and_difference_values = $max_values;
foreach($max_and_difference_values as &$entry)
{
$entry['difference_value'] = $entry['value_max'] - $min_values_by_id[$entry['id']];
}
unset($entry);
print_r($max_and_difference_values);
This is just a straight forward example, nothing fancy. Demo
the following works for me. I'm not a PHP expert though, i.e. I'm not so familiar with cloning (note the empty clone array). Note that it only copies existing properties (if one array does contain a min_value and another does only contain a some other key)
In essence
function convertArr( $arr ) {
// Easy referencing without having to search through the arrays more than once for a matching id
$new_arr = array();
foreach( $arr as $array ) {
$new_arr[ $array['id'] ] = cloneArr( $array );
}
return $new_arr;
}
function merge( $arr1, $arr2 ) {
$convertedArr1 = convertArr( $arr1 );
$convertedArr2 = convertArr( $arr2 );
$arr = array();
// Based on the ordered array
foreach( $convertedArr1 as $array ) {
$id = $array['id'];
$tempArr = array();
foreach( $convertedArr1[ $id ] as $k => $v ) {
$tempArr[ $k ] = $v;
}
foreach( $convertedArr2[ $id ] as $k => $v ) {
$tempArr[ $k ] = $v;
}
array_push( $arr, $tempArr );
}
return $arr;
}
Full example:
<?php
//$arr1 = [ ["name" => "john", "id" => 5, "value_max" => 500], ["name" => "john", "id" => 3, "value_max" => 200] ];
//$arr2 = [ ["name" => "john", "id" => 5, "value_min" => 100], ["name" => "john", "id" => 3, "value_min" => 150] ];
$arr1 = array(
array( "name" => "john", "id" => 5, "value_max" => 500 ),
array( "name" => "john", "id" => 3, "value_max" => 200 )
);
$arr2 = array(
array( "name" => "john", "id" => 5, "value_min" => 100 ),
array( "name" => "john", "id" => 3, "value_min" => 150 )
);
function neatPrint( $arr ) {
echo "<pre>";
print_r( $arr );
echo "</pre>";
}
echo "<h2>Before</h2>";
neatPrint( $arr1 );
neatPrint( $arr2 );
echo "<hr/>";
function cloneArr( $old ) {
// I dunno how to properly clone
return $old;
}
function convertArr( $arr ) {
// Easy referencing without having to search through the arrays more than once for a matching id
$new_arr = array();
foreach( $arr as $array ) {
$new_arr[ $array['id'] ] = cloneArr( $array );
}
return $new_arr;
}
function merge( $arr1, $arr2 ) {
$convertedArr1 = convertArr( $arr1 );
$convertedArr2 = convertArr( $arr2 );
$arr = array();
// Based on the ordered array
foreach( $convertedArr1 as $array ) {
$id = $array['id'];
$tempArr = array();
neatPrint( $convertedArr1[ $id ] );
neatPrint( $convertedArr2[ $id ] );
foreach( $convertedArr1[ $id ] as $k => $v ) {
$tempArr[ $k ] = $v;
}
foreach( $convertedArr2[ $id ] as $k => $v ) {
$tempArr[ $k ] = $v;
}
array_push( $arr, $tempArr );
}
echo "<h2>Result</h2>";
return $arr;
}
echo "<h2>Loopthrough</h2>";
neatPrint( merge( $arr1, $arr2 ) );
?>
Let me know what you think :-)
if the element are in order try this code:
$arr = array();
for ($i=0; $i<count($first_array);$i++){
$arr['name'] = $first_array[$i]['name'];
$arr['id'] = $first_array[$i]['id'];
$arr['value_max'] = $first_array[$i]['value_max'];
$arr['difference_value'] = $first_array[$i]['value_max']-$second[$i['id']]['value_max'] ;
}
Suppose i have a array like this :
Array(
'1' => Array(
"ID" => 1,
"Name" => "name 1"
),
'2' => Array (
Array(
"ID" => 2,
"Name" => "name 2"
)
),
'3' => Array(
Array(
Array(
Array(
"ID" => 3,
"Name" => "name3"
)
)
),
'4' => Array (
Array {
"ID" => 4,
"Name" => "name 4"
),
Array(
"ID" => 5,
"Name" => "name 5"
),
Array(
"ID" => 6,
"Name" => "name 6"
)
);
number of sub-arrays is not ordered it may be 3, 4 or 5 etc...
and i wanted to get :
Array(
Array( "ID" => 1, "Name" => "name 1"),
Array( "ID" => 2, "Name" => "name 2"),
Array( "ID" => 3, "Name" => "name 3"),
Array( "ID" => 4, "Name" => "name 4"),
Array( "ID" => 5, "Name" => "name 5"),
Array( "ID" => 6, "Name" => "name 6"));
Is there an easy way to do this ?
EDIT :
Edited the above array to add :
'4' => Array (
Array {
"ID" => 4,
"Name" => "name 4"
),
Array(
"ID" => 5,
"Name" => "name 5"
),
Array(
"ID" => 6,
"Name" => "name 6"
)
);
which aren't nested but i still want them to be in my final array.
Thanks.
//Assuming your data is in $in
$out=array();
foreach($in as $k=>$v) {
while ((is_array($v)) && (isset($v[0]))) $v=$v[0];
//See below for next line
$out[]=$v;
}
print_r($out);
With the marked line being either $out[$k]=$v; or $out[]=$v; depending on wether you want to keep the 1st-level keys. In your desired output you do not ,so use the shown version
Edit
With you changed input array, you need to do something like
function addtoarray($inarray, &$outarray) {
foreach ($inarray as $i) {
if (!is_array($i)) continue;
if (isset($i['ID'])) $outarray[]=$i;
else addtoarray($i,$outarray);
}
}
$out=array();
addtoarray($in,$out);
print_r($out);
This was tested against your new input data
You could recurse through the array and check for the ID field.
function combine_array(array $src, array &$dest)
{
if( isset( $src['ID'] ) ) {
$dest[] = $src;
return;
}
foreach( $sub in $src ) {
combine_array( $sub, $dest );
}
}
Just wrote this off the top of my head, no testing, so it might have a few problems. But that's the basic idea.
This may work for you, assuming $array is the variable and php 5.3
//process
$array = array_map(function($block) {
$return = '';
foreach ($block as $sub) {
if (true === isset($sub['ID']) {
$return = $block;
break;
}
}
return $block;
}, $array);
array_filter($array); //remove empty elements
Wrote up a quick recursive function. You'll need to write any appropriate error handling and check the logic, since a discrepancy in your data could easily turn this into an infinite loop:
$output = array();
foreach ( $data as $d ) {
$output[] = loop_data( $d );
}
function loop_data( $data ) {
// Check if this is the right array
if( ! array_key_exists( "ID", $data ) ) {
// Go deeper
$data = loop_data( $data[0] );
}
return $data;
}