Related
Take a look at this code:
$GET = array();
$key = 'one=1';
$rule = explode('=', $key);
/* array_push($GET, $rule[0] => $rule[1]); */
I'm looking for something like this so that:
print_r($GET);
/* output: $GET[one => 1, two => 2, ...] */
Is there a function to do this? (because array_push won't work this way)
Nope, there is no array_push() equivalent for associative arrays because there is no way determine the next key.
You'll have to use
$arrayname[indexname] = $value;
Pushing a value into an array automatically creates a numeric key for it.
When adding a key-value pair to an array, you already have the key, you don't need one to be created for you. Pushing a key into an array doesn't make sense. You can only set the value of the specific key in the array.
// no key
array_push($array, $value);
// same as:
$array[] = $value;
// key already known
$array[$key] = $value;
You can use the union operator (+) to combine arrays and keep the keys of the added array. For example:
<?php
$arr1 = array('foo' => 'bar');
$arr2 = array('baz' => 'bof');
$arr3 = $arr1 + $arr2;
print_r($arr3);
// prints:
// array(
// 'foo' => 'bar',
// 'baz' => 'bof',
// );
So you could do $_GET += array('one' => 1);.
There's more info on the usage of the union operator vs array_merge in the documentation at http://php.net/manual/en/function.array-merge.php.
I wonder why the simplest method hasn't been posted yet:
$arr = ['company' => 'Apple', 'product' => 'iPhone'];
$arr += ['version' => 8];
I would like to add my answer to the table and here it is :
//connect to db ...etc
$result_product = /*your mysql query here*/
$array_product = array();
$i = 0;
foreach ($result_product as $row_product)
{
$array_product [$i]["id"]= $row_product->id;
$array_product [$i]["name"]= $row_product->name;
$i++;
}
//you can encode the array to json if you want to send it to an ajax call
$json_product = json_encode($array_product);
echo($json_product);
hope that this will help somebody
Exactly what Pekka said...
Alternatively, you can probably use array_merge like this if you wanted:
array_merge($_GET, array($rule[0] => $rule[1]));
But I'd prefer Pekka's method probably as it is much simpler.
I was just looking for the same thing and I realized that, once again, my thinking is different because I am old school. I go all the way back to BASIC and PERL and sometimes I forget how easy things really are in PHP.
I just made this function to take all settings from the database where their are 3 columns. setkey, item (key) & value (value) and place them into an array called settings using the same key/value without using push just like above.
Pretty easy & simple really
// Get All Settings
$settings=getGlobalSettings();
// Apply User Theme Choice
$theme_choice = $settings['theme'];
.. etc etc etc ....
function getGlobalSettings(){
$dbc = mysqli_connect(wds_db_host, wds_db_user, wds_db_pass) or die("MySQL Error: " . mysqli_error());
mysqli_select_db($dbc, wds_db_name) or die("MySQL Error: " . mysqli_error());
$MySQL = "SELECT * FROM systemSettings";
$result = mysqli_query($dbc, $MySQL);
while($row = mysqli_fetch_array($result))
{
$settings[$row['item']] = $row['value']; // NO NEED FOR PUSH
}
mysqli_close($dbc);
return $settings;
}
So like the other posts explain... In php there is no need to "PUSH" an array when you are using
Key => Value
AND... There is no need to define the array first either.
$array=array();
Don't need to define or push. Just assign $array[$key] = $value; It is automatically a push and a declaration at the same time.
I must add that for security reasons, (P)oor (H)elpless (P)rotection, I means Programming for Dummies, I mean PHP.... hehehe I suggest that you only use this concept for what I intended. Any other method could be a security risk. There, made my disclaimer!
This is the solution that may useful for u
Class Form {
# Declare the input as property
private $Input = [];
# Then push the array to it
public function addTextField($class,$id){
$this->Input ['type'][] = 'text';
$this->Input ['class'][] = $class;
$this->Input ['id'][] = $id;
}
}
$form = new Form();
$form->addTextField('myclass1','myid1');
$form->addTextField('myclass2','myid2');
$form->addTextField('myclass3','myid3');
When you dump it. The result like this
array (size=3)
'type' =>
array (size=3)
0 => string 'text' (length=4)
1 => string 'text' (length=4)
2 => string 'text' (length=4)
'class' =>
array (size=3)
0 => string 'myclass1' (length=8)
1 => string 'myclass2' (length=8)
2 => string 'myclass3' (length=8)
'id' =>
array (size=3)
0 => string 'myid1' (length=5)
1 => string 'myid2' (length=5)
2 => string 'myid3' (length=5)
A bit late but if you don't mind a nested array you could take this approach:
$main_array = array(); //Your array that you want to push the value into
$value = 10; //The value you want to push into $main_array
array_push($main_array, array('Key' => $value));
To clarify,
if you output json_encode($main_array) that will look like [{"Key":"10"}]
A bit weird, but this worked for me
$array1 = array("Post Slider", "Post Slider Wide", "Post Slider");
$array2 = array("Tools Sliders", "Tools Sliders", "modules-test");
$array3 = array();
$count = count($array1);
for($x = 0; $x < $count; $x++){
$array3[$array1[$x].$x] = $array2[$x];
}
foreach($array3 as $key => $value){
$output_key = substr($key, 0, -1);
$output_value = $value;
echo $output_key.": ".$output_value."<br>";
}
$arr = array("key1"=>"value1", "key2"=>"value");
print_r($arr);
// prints array['key1'=>"value1", 'key2'=>"value2"]
The simple way:
$GET = array();
$key = 'one=1';
parse_str($key, $GET);
http://php.net/manual/de/function.parse-str.php
Example array_merge()....
$array1 = array("color" => "red", 2, 4);
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
$result = array_merge($array1, $array2);
print_r($result);
Array([color] => green,[0] => 2,[1] => 4,[2] => a,[3] => b,[shape] => trapezoid,[4] => 4,)
I wrote a simple function:
function push(&$arr,$new) {
$arr = array_merge($arr,$new);
}
so that I can "upsert" new element easily:
push($my_array, ['a'=>1,'b'=>2])
2023
A lot of answers. Some helpful, others good but awkward. Since you don't need complicated and expensive arithmetic operations, loops etc. for a simple operation like adding an element to an array, here is my collection of One-Liner-Add-To-Array-Functions.
$array = ['a' => 123, 'b' => 456]; // init Array
$array['c'] = 789; // 1.
$array += ['d' => '012']; // 2.
$array = array_merge($array, ['e' => 345]); // 3.
$array = [...$array, 'f' => 678]; // 4.
print_r($array);
// Output:
/*
Array
(
[a] => 123
[b] => 456
[c] => 789
[d] => 012
[e] => 345
[f] => 678
)
*/
In 99,99% i use version 1. ($array['c'] = 789;). But i like version 4. That is the version with the splat operator (https://www.php.net/manual/en/migration56.new-features.php).
array_push($arr, ['key1' => $value1, 'key2' => value2]);
This works just fine.
creates the the key with its value in the array
hi i had same problem i find this solution you should use two arrays then combine them both
<?php
$fname=array("Peter","Ben","Joe");
$age=array("35","37","43");
$c=array_combine($fname,$age);
print_r($c);
?>
reference : w3schools
For add to first position with key and value
$newAarray = [newIndexname => newIndexValue] ;
$yourArray = $newAarray + $yourArray ;
There are some great example already given here. Just adding a simple example to push associative array elements to root numeric index index.
$intial_content = array();
if (true) {
$intial_content[] = array('name' => 'xyz', 'content' => 'other content');
}
array_push($GET, $GET['one']=1);
It works for me.
I usually do this:
$array_name = array(
'key1' => 'value1',
'key2' => 'value2',
'key3' => 'value3'
);
I have an array $data
fruit => apple,
seat => sofa,
etc. I want to loop through so that each key becomes type_key[0]['value'] so eg
type_fruit[0]['value'] => apple,
type_seat[0]['value'] => sofa,
and what I thought would do this, namely
foreach ($data as $key => $value)
{
# Create a new, renamed, key.
$array[str_replace("/(.+)/", "type_$1[0]['value']", $key)] = $value;
# Destroy the old key/value pair
unset($array[$key]);
}
print_r($array);
Doesn't work. How can I make it work?
Also, I want everything to be in the keys (not the values) to be lowercase: is there an easy way of doing this too? Thanks.
Do you mean you want to make the keys into separate arrays? Or did you mean to just change the keys in the same array?
$array = array();
foreach ($data as $key => $value)
{
$array['type_' . strtolower($key)] = array(array('value' => $value));
}
if you want your keys to be separate variables, then do this:
extract($array);
Now you will have $type_fruit and $type_sofa. You can find your values as $type_fruit[0]['value'], since we put an extra nested array in there.
Your requirements sound... suspect. Perhaps you meant something like the following:
$arr = array('fruit' => 'apple', 'seat' => 'sofa');
$newarr = array();
foreach ($arr as $key => $value)
{
$newkey = strtolower("type_$key");
$newarr[$newkey] = array(array('value' => $value));
}
var_dump($newarr);
First I wouldn't alter the input-array but create a new one unless you're in serious, serious trouble with your memory limit.
And then you can't simply replace the key to add a deeper nested level to an array.
$x[ 'abc[def]' ] is still only referencing a top-level element, since abc[def] is parsed as one string, but you want $x['abc']['def'].
$data = array(
'fruit' => 'apple',
'seat' => 'sofa'
);
$result = array();
foreach($data as $key=>$value) {
$target = 'type_'.$key;
// this might be superfluous, but who knows... if you want to process more than one array this might be an issue.
if ( !isset($result[$target]) || !is_array($result[$target]) ) {
$result[$target] = array();
}
$result[$target][] = array('value'=>$value);
}
var_dump($result);
for starters
$array[str_replace("/(.+)/", "type_$1[0]['value']", $key)] = $value;
should be
$array[str_replace("/(.+)/", type_$1[0]['value'], $key)] = $value;
Take a look at this code:
$GET = array();
$key = 'one=1';
$rule = explode('=', $key);
/* array_push($GET, $rule[0] => $rule[1]); */
I'm looking for something like this so that:
print_r($GET);
/* output: $GET[one => 1, two => 2, ...] */
Is there a function to do this? (because array_push won't work this way)
Nope, there is no array_push() equivalent for associative arrays because there is no way determine the next key.
You'll have to use
$arrayname[indexname] = $value;
Pushing a value into an array automatically creates a numeric key for it.
When adding a key-value pair to an array, you already have the key, you don't need one to be created for you. Pushing a key into an array doesn't make sense. You can only set the value of the specific key in the array.
// no key
array_push($array, $value);
// same as:
$array[] = $value;
// key already known
$array[$key] = $value;
You can use the union operator (+) to combine arrays and keep the keys of the added array. For example:
<?php
$arr1 = array('foo' => 'bar');
$arr2 = array('baz' => 'bof');
$arr3 = $arr1 + $arr2;
print_r($arr3);
// prints:
// array(
// 'foo' => 'bar',
// 'baz' => 'bof',
// );
So you could do $_GET += array('one' => 1);.
There's more info on the usage of the union operator vs array_merge in the documentation at http://php.net/manual/en/function.array-merge.php.
I wonder why the simplest method hasn't been posted yet:
$arr = ['company' => 'Apple', 'product' => 'iPhone'];
$arr += ['version' => 8];
I would like to add my answer to the table and here it is :
//connect to db ...etc
$result_product = /*your mysql query here*/
$array_product = array();
$i = 0;
foreach ($result_product as $row_product)
{
$array_product [$i]["id"]= $row_product->id;
$array_product [$i]["name"]= $row_product->name;
$i++;
}
//you can encode the array to json if you want to send it to an ajax call
$json_product = json_encode($array_product);
echo($json_product);
hope that this will help somebody
Exactly what Pekka said...
Alternatively, you can probably use array_merge like this if you wanted:
array_merge($_GET, array($rule[0] => $rule[1]));
But I'd prefer Pekka's method probably as it is much simpler.
I was just looking for the same thing and I realized that, once again, my thinking is different because I am old school. I go all the way back to BASIC and PERL and sometimes I forget how easy things really are in PHP.
I just made this function to take all settings from the database where their are 3 columns. setkey, item (key) & value (value) and place them into an array called settings using the same key/value without using push just like above.
Pretty easy & simple really
// Get All Settings
$settings=getGlobalSettings();
// Apply User Theme Choice
$theme_choice = $settings['theme'];
.. etc etc etc ....
function getGlobalSettings(){
$dbc = mysqli_connect(wds_db_host, wds_db_user, wds_db_pass) or die("MySQL Error: " . mysqli_error());
mysqli_select_db($dbc, wds_db_name) or die("MySQL Error: " . mysqli_error());
$MySQL = "SELECT * FROM systemSettings";
$result = mysqli_query($dbc, $MySQL);
while($row = mysqli_fetch_array($result))
{
$settings[$row['item']] = $row['value']; // NO NEED FOR PUSH
}
mysqli_close($dbc);
return $settings;
}
So like the other posts explain... In php there is no need to "PUSH" an array when you are using
Key => Value
AND... There is no need to define the array first either.
$array=array();
Don't need to define or push. Just assign $array[$key] = $value; It is automatically a push and a declaration at the same time.
I must add that for security reasons, (P)oor (H)elpless (P)rotection, I means Programming for Dummies, I mean PHP.... hehehe I suggest that you only use this concept for what I intended. Any other method could be a security risk. There, made my disclaimer!
This is the solution that may useful for u
Class Form {
# Declare the input as property
private $Input = [];
# Then push the array to it
public function addTextField($class,$id){
$this->Input ['type'][] = 'text';
$this->Input ['class'][] = $class;
$this->Input ['id'][] = $id;
}
}
$form = new Form();
$form->addTextField('myclass1','myid1');
$form->addTextField('myclass2','myid2');
$form->addTextField('myclass3','myid3');
When you dump it. The result like this
array (size=3)
'type' =>
array (size=3)
0 => string 'text' (length=4)
1 => string 'text' (length=4)
2 => string 'text' (length=4)
'class' =>
array (size=3)
0 => string 'myclass1' (length=8)
1 => string 'myclass2' (length=8)
2 => string 'myclass3' (length=8)
'id' =>
array (size=3)
0 => string 'myid1' (length=5)
1 => string 'myid2' (length=5)
2 => string 'myid3' (length=5)
A bit late but if you don't mind a nested array you could take this approach:
$main_array = array(); //Your array that you want to push the value into
$value = 10; //The value you want to push into $main_array
array_push($main_array, array('Key' => $value));
To clarify,
if you output json_encode($main_array) that will look like [{"Key":"10"}]
A bit weird, but this worked for me
$array1 = array("Post Slider", "Post Slider Wide", "Post Slider");
$array2 = array("Tools Sliders", "Tools Sliders", "modules-test");
$array3 = array();
$count = count($array1);
for($x = 0; $x < $count; $x++){
$array3[$array1[$x].$x] = $array2[$x];
}
foreach($array3 as $key => $value){
$output_key = substr($key, 0, -1);
$output_value = $value;
echo $output_key.": ".$output_value."<br>";
}
$arr = array("key1"=>"value1", "key2"=>"value");
print_r($arr);
// prints array['key1'=>"value1", 'key2'=>"value2"]
The simple way:
$GET = array();
$key = 'one=1';
parse_str($key, $GET);
http://php.net/manual/de/function.parse-str.php
Example array_merge()....
$array1 = array("color" => "red", 2, 4);
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
$result = array_merge($array1, $array2);
print_r($result);
Array([color] => green,[0] => 2,[1] => 4,[2] => a,[3] => b,[shape] => trapezoid,[4] => 4,)
I wrote a simple function:
function push(&$arr,$new) {
$arr = array_merge($arr,$new);
}
so that I can "upsert" new element easily:
push($my_array, ['a'=>1,'b'=>2])
2023
A lot of answers. Some helpful, others good but awkward. Since you don't need complicated and expensive arithmetic operations, loops etc. for a simple operation like adding an element to an array, here is my collection of One-Liner-Add-To-Array-Functions.
$array = ['a' => 123, 'b' => 456]; // init Array
$array['c'] = 789; // 1.
$array += ['d' => '012']; // 2.
$array = array_merge($array, ['e' => 345]); // 3.
$array = [...$array, 'f' => 678]; // 4.
print_r($array);
// Output:
/*
Array
(
[a] => 123
[b] => 456
[c] => 789
[d] => 012
[e] => 345
[f] => 678
)
*/
In 99,99% i use version 1. ($array['c'] = 789;). But i like version 4. That is the version with the splat operator (https://www.php.net/manual/en/migration56.new-features.php).
array_push($arr, ['key1' => $value1, 'key2' => value2]);
This works just fine.
creates the the key with its value in the array
hi i had same problem i find this solution you should use two arrays then combine them both
<?php
$fname=array("Peter","Ben","Joe");
$age=array("35","37","43");
$c=array_combine($fname,$age);
print_r($c);
?>
reference : w3schools
For add to first position with key and value
$newAarray = [newIndexname => newIndexValue] ;
$yourArray = $newAarray + $yourArray ;
There are some great example already given here. Just adding a simple example to push associative array elements to root numeric index index.
$intial_content = array();
if (true) {
$intial_content[] = array('name' => 'xyz', 'content' => 'other content');
}
array_push($GET, $GET['one']=1);
It works for me.
I usually do this:
$array_name = array(
'key1' => 'value1',
'key2' => 'value2',
'key3' => 'value3'
);
So, I have an array that, for unrelated reasons, has one imploded field in itself. Now, I'm interested in exploding the string in that field, and replacing that field with the results of the blast. I kinda-sorta have a working solution here, but it looks clunky, and I'm interested in something more efficient. Or at least aesthetically pleasing.
Example array:
$items = array(
'name' => 'shirt',
'kind' => 'blue|long|L',
'price' => 10,
'amount' => 5);
And the goal is to replace the 'kind' field with 'color', 'lenght', 'size' fields.
So far I've got:
$attribs = array('color', 'lenght', 'size'); // future indices
$temp = explode("|", $items['kind']); // exploding the field
foreach ($items as $key => $value) { // iterating through old array
if ($key == 'kind') {
foreach ($temp as $k => $v) { // iterating through exploded array
$new_items[$attribs[$k]] = $v; // assigning new array, exploded values
}
}
else $new_items[$key] = $value; // assigning new array, untouched values
}
This should (I'm writing by heart, don't have the access to my own code, and I can't verify the one I just wrote... so if there's any errors, I apologize) result in a new array, that looks something like this:
$new_items = array(
'name' => 'shirt',
'color' => 'blue',
'lenght' => 'long',
'size' => 'L',
'price' => 10,
'amount' => 5);
I could, for instance, just append those values to the $items array and unset($items['kind']), but that would throw the order out of whack, and I kinda need it for subsequent foreach loops.
So, is there an easier way to do it?
EDIT:
(Reply to Visage and Ignacio - since reply messes the code up)
If I call one in a foreach loop, it calls them in a specific order. If I just append, I mess with the order I need for a table display. I'd have to complicate the display code, which relies on a set way I get the initial data.
Currently, I display data with (or equivalent):
foreach($new_items as $v) echo "<td>$v</td>\n";
If I just append, I'd have to do something like:
echo "<td>$new_items['name']</td>\n";
foreach ($attribs as $v) echo "<td>$new_items[$v]</td>\n";
echo "<td>$new_items['price']</td>\n";
echo "<td>$new_items['amount']</td>\n";
Associative arrays generally should not depend on order. I would consider modifying the later code to just index the array directly and forgo the loop.
Try this:
$items = array( 'name' => 'shirt', 'kind' => 'blue|long|L', 'price' => 10, 'amount' => 5);
list($items['color'], $items['lenght'], $items['size'])=explode("|",$items['kind']);
unset $items['kind'];
I've not tested it but it should work.
Associative arrays do not have an order, so you can just unset the keys you no longer want and then simply assign the new values to new keys.
one way
$items = array(
'name' => 'shirt',
'kind' => 'blue|long|L',
'price' => 10,
'amount' => 5);
$attribs = array('color', 'lenght', 'size');
$temp = explode("|", $items['kind']);
$s = array_combine($attribs,$temp);
unset($items["kind"]);
print_r( array_merge( $items, $s) );
This should retain the ordering because it splits the keys and values into two numerically ordered arrays and combines them at the end. It isn't more efficient, but the code is easier to read.
$kind_keys = array('color', 'length', 'size');
$kind_values = explode("|", $items['kind']);
$keys = array_keys($items);
$values = array_values($items);
$index = array_search('kind', $keys);
// Put the new keys/values in:
array_splice($keys, $index, 1, $kind_keys);
array_splice($values, $index, 1, $kind_values);
// combine the result into a new array:
$result = array_combine($keys, $values));
Hi I'm trying to loop through a array and set a keys value. Very basic question.
The Code I tried is below.
http://pastebin.com/d3ddab156
<?php
$testArray = array("bob1" => array( 'name' => "bob1", 'setTest' => '2'));
foreach($testArray as $item)
{
$item['setTest'] = 'bob';
}
print_r($testArray);
I imagine I'm missing something stupid here and it is going to be a D'oh! moment for me. What is wrong with it?
Thanks.
You do:
$testArray = array("bob1" => array( 'name' => "bob1", 'setTest' => '2'));
foreach($testArray as $item)
{
$item['setTest'] = 'bob';
}
print_r($testArray);
$item is a copy. You change the copy, not the real array. Try this:
$testArray = array("bob1" => array( 'name' => "bob1", 'setTest' => '2'));
foreach($testArray as $key => $item)
{
$testArray[$key]['setTest'] = 'bob';
}
print_r($testArray);
Or, if you have a lot of data in the array and want to avoid creating a complete copy of each element over every iteration, simply iterate over each element as a reference. Then only a reference to that item is created i memory and you can directly manipulate the array element by using $item:
$testArray = array("bob1" => array( 'name' => "bob1", 'setTest' => '2'));
foreach($testArray as &$item)
{
$item['setTest'] = 'bob';
}
print_r($testArray);
NOTE: be sure to unset $item after the loop so you don't inadvertantly modify the array later by using that variable name.