loop through an array and show results - php

i m trying to do a loop but get stacked ,
i have a function that convert facebook id to facebook name , by the facebook api. name is getName().
on the other hand i have an arra with ids . name is $receivers.
the count of the total receivers $totalreceivers .
i want to show names of receivers according to the ids stored in the array.
i tried every thing but couldnt get it. any help will be appreciated . thanks in advance.
here is my code :
for ($i = 0; $i < $totalreceivers; $i++) {
foreach ( $receivers as $value)
{
echo getName($receivers[$i]) ;
}
}
the function :
function getName($me)
{
$facebookUrl = "https://graph.facebook.com/".$me;
$str = file_get_contents($facebookUrl);
$result = json_decode($str);
return $result->name;
}


The inner foreach loop seems to be entirely redundant. Try something like:
$names = array();
for ($i = 0; $i < $totalReceivers; $i++) {
$names[] = getName($receivers[$i]);
}
Doing a print_r($names) afterwards should show you the results of the loop, assuming your getNames function is working properly.


Depending of the content of the $receivers array try either
foreach ($receivers as $value){
echo getName($value) ;
}
or
foreach ($receivers as $key => $value){
echo getName($key) ;
}

Related

Add new data in foreach loop multidimensional array

I try to add new data in a multidimensional array for each loop, but it wont work.
This shows the values in my array:
$keys = array_keys($klanten);
for($i = 0; $i < count($klanten); $i++) {
foreach($klanten[$keys[$i]] as $key => $value) {
echo $key . " : " . $value . "<br>";
$klanten['newData'] = 'test';
}
}
With $klanten['newData'] = 'test'; I try to add "test" to each array, but it won't work.
I also tried to use this, AFTER the script above:
foreach ($klanten as &$item ){
$item['newData'] = 'test';
}
That will work, but I think there must be an option to do it in the foreach loop above the first time. How can I do that?

Hi so you got most of it right but, you see when you are looping around a variable and adding a new item in it you have to make sure to give a index for that new array index so...
$keys = array_keys($klanten);
for($i = 0; $i < count($klanten); $i++) {
foreach($klanten[$keys[$i]] as $key => $value) {
echo $key . " : " . $value . "<br>";
// $klanten['newData'] = 'test'; // instead of this
$klanten[$key]['newData'] = 'test'; // do this
}
}
This will save each and every value of newData index according to its key in $klanten array.

PHP Serialized Data output inside foreach loop

I've been stuck on this for like 2 days, and I know it's much more simpler than I think it is..
I have a foreach loop that goes like this.
foreach($appointments as $appointment){
$list = $appointment['techs']
}
The $appointment['techs']; comes out of the database like this.
a:2:{i:0;s:1:"1";i:1;s:2:"12";}
My question is, how to I get loop through appointments and then show the users that are assigned to each appointment...
The desired output should look like this,
{ resource : 1, event : 1},{ resource : 12, event : 1}
I've literally tried everything! Any help would be greatly appreciated.

$array = [];
$string = 'a:2:{i:0;s:1:"1";i:1;s:2:"12";}';
$arr = (unserialize($string));
foreach ($arr as $item){
array_push($array, json_encode(['resource'=> $item, 'event'=>1]));
}
$i = 0;
$numItems = count($array);
foreach ($array as $item) {
if (++$i === $numItems) {
echo $item;
}
else{
echo $item.',';
}
}
// Output: {"resource":"1","event":1},{"resource":"12","event":1}

The PHP command unserialize it's what you are looking for.
foreach($appointments as $appointment){
$list = unserialize($appointment['techs']);
}

Count groups in loop foreach

My Script :
<?php
$values='Product1,54,3,888888l,Product2,54,3,888888l,';
$exp_string=explode(",",$values);
$f=0;
foreach($exp_string as $exp_strings)
{
echo "".$f." - ".$exp_string[$f]." ";
if ($f%3==0)
{
print "<br><hr><br>";
}
$f++;
}
?>
With this code i want show data inside loop, the idea it´s show all information in groups the elements in each group it´s 4 elements and must show as this :
Results :
Group 1 :
Product1,54€,3,green
Group 2:
Product2,56€,12,red
The problem it´s i don´t know why, don´t show as i want, and for example show separate some elements and not in group, thank´s , regards

It looks like you are trying to combine elements of a for loop and a foreach loop.
Here is an example of each, pulled from the php manual:
For Loop
for($index = 0, $index < size($array), $index++ {
//Run Code
//retrieve elements from $array with $array[$index]
}
Foreach
$arr = array(1, 2, 3, 4);
foreach ($arr as &$value) {
$value = $value * 2;
}
It's hard for me to understand what your input looks like. If you post an example of $exp_strings, I could be of better assistance. But from the sound of your question, if $exp_strings is multidimensional if you need to loop through groups of items, you could try nesting one loop inside another loop like so:
$groups_of_data = array(array(...), array(...), array(...));
for($i = 0, $i < size($groups_of_data), $i++) {
$group = $i;
for($j = 0, $j < size($groups_of_data[$i]), $j++) {
// print out data related to group $i
}
}
This is really all guesswork on my part though as I can't see what your input string/array is. Can you post that? Maybe I can be of more help.

here is code i worked out. it was kind of since i did't know what object $exp_string is. if it's a string you should tokenize it, but i think it's array from database. there was another problem, with your code where it tries to output $exp_string[$f] it should be $exp_strings what changes in the loop.
my code
$exp_string=array("Product"=>54,"price"=>3,"color"=>"green");
$f=0;
foreach($exp_string as $key => $exp_strings)
{
if($f%3==0)
{
print "<br><hr><br>";
echo "Product ".$exp_strings."<br> ";
}
else if($f%3==1)
{
echo "Price ".$exp_strings."<br> ";
}
else if($f%3==2)
{
echo "Color ".$exp_strings."<br> ";
}
$f++;
}
hope it's any help, maybe not what you wanted.

$values='Product1,1,2,3,Product2,1,2,3,Product3,1,2,3';
$products = (function($values) {
$exp_string = explode(',', $values);
$products = [];
for ($i=0; $i+3<count($exp_string); $i+=4) {
$product = [
'title' => $exp_string[$i],
'price' => $exp_string[$i+1],
'color' => $exp_string[$i+2],
'num' => $exp_string[$i+3],
];
array_push($products, $product);
}
return $products;
})($values);
/* var_dump($products); */
foreach($products as $product) {
echo "{$product['title']},{$product['price']},{$product['color']},{$product['num']}<br>";
}

PHP Loop to loop through page ID and locations

I am trying to build a loop to show different location names based on the page ID. I am trying a for loop, but not sure how to get the 2 results, I tried a foreach, but still got lost.
$location = array( "Frisco" => "1507", "McKinney" => "1509");
$count = count($location);
for($i = 0; $i < $count; $i++){
if(is_page($location[$i])) {
$location = "";
}
}
Need results =
// Add Shortcode
function dynamicLocation(){
if(is_page('1')){
$location = "McKinney";
}
else if(is_page()){
$location....
}
}

Forget for, use foreach:
foreach ($location as $key=>$value){
//here $key is the location and $value is the ID
//e.g. $key="Frisco", $value="1507"
}

Array not repeating inside in for loop

I have an array for autofilled multi select form. I have to display some values as initial values, And I have an array for it.
This is my code.
for($i=0; $i<count($temp_multy_name); $i++)
{
echo $temp_multy_name[$i]; echo"&nbsp";
$pac->set_init_selection(array(
array("id"=>"$temp_multy_name[$i]", "text"=>"$temp_multy_name[$i]"),
));
}
when I run echo $temp_multy_name[$i], i get php and mysql, but when I apply it in the set_init_selection i got only the last value, Don't know why. Can any one please help me?

Here is your solution
$setInitSelection = array();
for($i=0; $i<count($temp_multy_name); $i++)
{
echo $temp_multy_name[$i]; echo"&nbsp";
$setInitSelection[] = array("id"=>$temp_multy_name[$i], "text"=>$temp_multy_name[$i]);
}
$pac->set_init_selection($setInitSelection);

Maybe you are overriding your array. Try this:
$selection_array = array();
for($i=0; $i<count($temp_multy_name); $i++)
{
//echo $temp_multy_name[$i]; echo"&nbsp";
$selection_array[] = array("id"=>$temp_multy_name[$i], "text"=>$temp_multy_name[$i]);
}
$pac->set_init_selection($selection_array);

Your calling the $pac->set_init_name(array $val) multiple times, overwriting the previous values. Try this:
$initialSelection = array();
for($i=0; $i<count($temp_multy_name); $i++)
{
echo $temp_multy_name[$i]; echo"&nbsp";
$initialSelection[$i] = array("id"=>$temp_multy_name[$i], "text"=>$temp_multy_name[$i]);
}
$pac->set_init_selection(array($initialSelection);
Hope that helps.

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