I know this should be very simple, but boy I'm making a mess of it... would be great if someone could point me in the right direction.
I've got an array which looks like this:
print_r($request_attributes['length']);
Array
(
[0] => 28.00000
[1] => 18.00000
)
and am trying to modify like so:
if(is_array($request_attributes['length'])) {
$request_attributes['length'] = $request_attributes['length'][0];
print($request_attributes['length']);
$request_attributes['length'] = $request_attributes['length'][1];
print($request_attributes['length']);
}
which gives the correct output in the first update, but the second item outputs an '8'. I've tried the above in both a for and foreach which results in similar output for both this and the other two arrays ( width(8) and height(0) - they should result in 18.00000 and 13.00000 respectively ). So I guess I really have two questions:
1. How do I update this(these) element(s)?
2. Where are the funny outputs actually coming from?
If anyone can help, I'd really appreciated it.
Just have a look at this. Your problem is, that you override you variable and in the second step $request_attributes['length'] is a string. Just define another var for your values.
$request_attributes['length'] = [
28.000,
18.000
];
$attributes = array();
if (is_array($request_attributes['length'])) {
foreach ($request_attributes['length'] as $value) {
$attributes[] = $value;
}
}
As you see $attributes will contain all values of your $request_attributes['length'] array and will not be overwritten.
Define araay as below
$val=array([0]=>"18.000",[1]=>13.000)
then use
if(is_array($request_attributes['length'])) {
$request_attributes['length'] = $val;
print_r($request_attributes['length']);
$request_attributes['length'] = $val;
print_r($request_attributes['length']);
}
Previously your array doesnt have any name.
Your print will only return Just array not the values
use
print_r($request_attributes['length']) ;
instead
Related
In my project i'm split an array index value based on regex value. but when i want merge all array together the merge function doesn't merge.
Here is my code sample.
$testarray=array();
$merge_array=array();
//receive parameter is Admin|Manager,User#Test
foreach ($roles as $value) {
if(preg_match("/[##%$|:\s,]+/",$value))
{
$testarray=preg_split("/[##%$|:\s,]+/",$value);
}
print_r(array_merge($merge_array,$testarray));
}
The print_r show this result.
Array ( [0] => Admin [1] => Manager ) Array ( [0] => User [1] => Test )
You just merge arrays, but don't assign results to any variable, proper code is:
//receive parameter is Admin|Manager,User#Test
foreach ($roles as $value) {
if(preg_match("/[##%$|:\s,]+/",$value))
{
$testarray=preg_split("/[##%$|:\s,]+/",$value);
}
// here you add $testarray values to
// `$merge_array` on each iteration
$merge_array = array_merge($merge_array,$testarray);
}
// print result array after loop
print_r($merge_array);
The Laravel framework has nothing to do with your issue. You're using PHP's standard functions.
The array_merge function doesn't modify the array you provide to it but provides the resulting array as its output. So you should assign array_merge's result to $merge_array.
Please try the following code:
$testarray = array();
$merge_array = array();
//receive parameter is Admin|Manager,User#Test
foreach ($roles as $value) {
if(preg_match("/[##%$|:\s,]+/",$value))
{
$testarray = preg_split("/[##%$|:\s,]+/",$value);
}
$merge_array = array_merge($merge_array, $testarray);
}
print_r($merge_array);
You seem to think wrong.
print_r(array_merge($merge_array,$testarray));
The above line is in "foreach" loop.
In that case, to get a merged result, you should do like the followings;
$merge_array = array_merge($merge_array,$testarray)
In your code, $merge_array remains empty, so you see the current result.
Here is a fairly big object dumped using print_r.
https://docs.google.com/document/d/175RLhWlMQcyhGR6ffGSsoJGS3RyloEqo4EEHCL2H2vg/edit?usp=sharing
I am trying to change the values of the uploaded_files.
Towards the end of that object you'll see something like
[uploaded_files] => Array
(
[attachment] => /home2/magician/public_html/development/testing/wp-content/uploads/wpcf7_uploads/Central-Coast-Montessori-logo.jpg
[attachment2] => /home2/magician/public_html/development/testing/wp-content/uploads/wpcf7_uploads/Andrew.jpg )
My code
// move the attachments to wpcf7ev temp folder
foreach ($cf7ev_object['uploaded_files'] as $key => $uploaded_file_path) {
$new_filepath = WPCF7EV_UPLOADS_DIR . '/' . basename($uploaded_file_path);
wpcf7ev_debug("New file path is {$new_filepath}");
rename($uploaded_file_path, $new_filepath);
wpcf7ev_debug("'{$key}'is the KEY for {$uploaded_file_path}");
wpcf7ev_debug($cf7ev_object['uploaded_files']);
$cf7ev_object['uploaded_files'][$key] = $new_filepath; // this is not updating
}
To loop through it I have been using
foreach ($cf7ev_object->uploaded_files as $key => $uploaded_file_path) {
and this has worked.
But shouldn't it be
foreach ($cf7ev_object['uploaded_files'] as $key => $uploaded_file_path) {
? As '->' is for accessing methods?
And specifically I want to update the values of those uploaded_files, so to do that I need to do
$cf7ev_object['uploaded_files'][$key] = $new_filepath; // this is not updating
? But this doesn't seem to be working.
I think I need to be clear on how to access values in an object.
Thanks.
First of all, regarding the single arrow "->" that is how you reference an objects values. But I won't get into that. Since you say it works, $cf7ev_object is obviously an object.
You say you want to "access the values in the object".
var_dump($cf7ev_object);
This will spit out what is in that object. I gather you are a bit of a newbie, so I will try to help you out best I can with the limited data you provided (you may want to expand your question.
Looping is not a one-shot deal. You can have nested loops and nested loops inside of those. However, it is a resource hog if you're not careful. Here is an exercise that might help you.
$new_array = array();
foreach($cf7ev_object->uploaded_files as $key => $value) {
$new_value = $value;//do something to the $value here
$new_array[$key] = $new_value;
}
//take a look at your work now:
print_r($new_array);
I hope this helps. Note: your google doc is restricted, public can't see it.. And your question is too vague. Let me know if I can help more.
If you want to change the object array values instantly you just set it equal to the above loop result:
$cf7ev_object->uploaded_files = $new_array;
I'm certain this is VERY simple, but being new and not knowing what I'm doing I can't quite get it on my own.
I am trying to create an array of wordpress post ID's that is derived from a simple foreach loop.
Basically I have this as my code:
$omit_these_quizzes = array();
foreach ( $filtered_pass as $single_quiz ) {
$quiz_id_number = $single_quiz['quiz'];
$omit_these_quizzes[] = $quiz_id_number;
}
I would like to take each of the resulting $quiz_id_number 's and have then end up in array that looks like this:
$omit_these_quizzes = array(8195,8193);
However, I keep ending up with an array that only contains the variable from the very last foreach loop, instead of them all. What am I doing wrong?
Thanks!
Your code looks fine.But if you want alternative try this:
see here for in_array and array_push.
$omit_these_quizzes = array();
foreach ( $filtered_pass as $single_quiz )
{
$quiz_id_number = $single_quiz['quiz'];
if(!in_array($quiz_id_number ,$omit_these_quizzes))
{
array_push($omit_these_quizzes, $quiz_id_number);
}
}
hope it's help you.
This work?
$omit_these_quizzes = array();
foreach ( $filtered_pass as $single_quiz ) {
$quiz_id_number = $single_quiz['quiz'];
array_push($omit_these_quizzes, $quiz_id_number);
}
Looks like you are creating a new array in each loop, that's why you end up with an array containing just a single element...
Use:
$omit_these_quizzes = array();
foreach ( $filtered_pass as $single_quiz )
{
$quiz_id_number = $single_quiz['quiz'];
array_push($omit_these-quizzes, $quiz_id_number);
}
Your code is correct. Inspect your $filtered_pass variable by calling var_dump($filtered_pass); may be it contain only one subarray.
I have always sucked at complex arrays there must be something in my brain preventing me from ever understanding them. I will try to make this example really simple so we will not go off topic. I use this code to use numbers to represent each file name:
$mod_nums = array('1' => $input_zip_path . '01_mod_1.0.2.zip',
'2' => $input_zip_path . '02_mod_1.0.1.zip',
);
So when I use $mod_nums['01'] it will display the path to that file. I have an array from the script that put these $mod_nums values into an array like so:
$files_to_zip = array(
$mod_nums['1'],
$mod_nums['2']
);
That worked fine. Now I wanted to add a $_POST value so that I can enter numbers like 1,2 and other numbers that I add to the $mod_nums array later like 1,3,6,12 for example. So I used an explode for those posted values:
$explode_mods = explode(",", trim($_POST['mods']));
Now for the big question that is racking my brain and spent hours on and cannot get it to work.... I need for $files_to_zip to still be in an array and display the posted values of $mod_nums. So it would be like:
$files_to_zip = array( HAVE $_POSTED VALUES IN HERE );
I hope that makes sense. I need $files_to_zip to remain in array format, grab the file path to the zip files from the $mod_nums array, and display it all correctly so it would dynamically output:
$files_to_zip = array('01_mod_1.0.2.zip', '02_mod_1.0.1.zip');
so posted numbers will appear in an array format for the $files_to_zip variable. Make sense? In short I need an array to have dynamic values. Thanks :)
EDIT
Phew I figured it out myself from memory when I worked on something similar many years ago. This looks tough but it isn't. I had to use a foreach and assign the variable into an array like so:
$blah = array();
foreach ($explode_mods as $value)
{
$blah[] = $mod_nums[$value];
}
then I just assigned $files_to_zip to $blah:
$files_to_zip = $blah;
works perfectly :) I just forgot how to dynamically assign values into an array.
// filenames array
$mod_nums = array('1' => $input_zip_path . '01_mod_1.0.2.zip',
'2' => $input_zip_path . '02_mod_1.0.1.zip',
);
// mod_num keys
$explode_mods = explode(',', trim($_POST['mods']));
// array to hold filenames
$files_to_zip = array();
// loop over all the mod_num keys submitted via POST
foreach($explode_mods as $key){
// save the filename to the corresponding array
$files_to_zip[] = $mod_nums[$key];
}
maybe i havn't understood you right, but won't this just be a simple foreach-loop to add the entrys to $files_to_zip like this:
$explode_mods = explode(",", trim($_POST['mods']));
foreach($explode_mods as $k){
$files_to_zip[] = $mod_nums[$k];
}
How can you do this? My code seen here doesn't work
for($i=0;i<count($cond);$i++){
$cond[$i] = $cond[$i][0];
}
It can be as simple as this:
$array = array_map('reset', $array);
There could be problems if the source array isn't numerically index. Try this instead:
$destinationArray = array();
for ($sourceArray as $key=>$value) {
$destinationArray[] = $value[0]; //you may want to use a different index than '0'
}
// Make sure you have your first array initialised here!
$array2 = array();
foreach ($array AS $item)
{
$array2[] = $item[0];
}
Assuming you want to have the same variable name afterwards, you can re-assign the new array back to the old one.
$array = $array2;
unset($array2); // Not needed, but helps with keeping memory down
Also, you might be able to, dependant on what is in the array, do something like.
$array = array_merge(array_values($array));
As previously stated, your code will not work properly in various situation.
Try to initialize your array with this values:
$cond = array(5=>array('4','3'),9=>array('3','4'));
A solution, to me better readable also is the following code:
//explain what to do to every single line of the 2d array
function reduceRowToFirstItem($x) { return $x[0]; }
// apply the trasnformation to the array
$a=array_map('reduceRowTofirstItem',$cond);
You can read the reference for array map for a thorough explanation.
You can opt also for a slight variation using array_walk (it operate on the array "in place"). Note that the function doesn't return a value and that his parameter is passed by reference.
function reduceToFirstItem(&$x) { $x=$x[0]; }
array_walk($cond, 'reduceToFirstItem');
That should work. Why does it not work? what error message do you get?
This is the code I would use:
$inArr;//This is the 2D array
$outArr = array();
for($i=0;$i<count($inArr);$i++){
$outArr[$i] = $inArr[$i][0];
}