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'
);
This question already has answers here:
How add a link on comma separated multidimensional array
(2 answers)
Closed 7 months ago.
I am trying to generate a string from an array. Need to concatenate the array values with a small string AFTER the value. It doesn't work for the last value.
$data = array (
1 => array (
'symbol' => 'salad'
),
2 => array (
'symbol' => 'wine'
),
3 => array (
'symbol' => 'beer'
)
);
$symbols = array_column($data, 'symbol');
$string_from_array = join($symbols, 'bar');
echo($string_from_array);
// expected output: saladbar, winebar, beerbar
// output: saladbar, winebar, beer
You can achieve it a few different ways. One is actually by using implode(). If there is at least one element, we can just implode by the delimiter "bar, " and append a bar after. We do the check for count() to prevent printing bar if there are no results in the $symbols array.
$symbols = array_column($data, "symbol");
if (count($symbols)) {
echo implode("bar, ", $symbols)."bar";
}
Live demo at https://3v4l.org/ms5Ot
You can also achieve the desired result using array_map(), as follows:
<?php
$data = [
1 => ['symbol' => 'salad'],
2 => ['symbol' => 'wine'],
3 => ['symbol' => 'beer']
];
echo join(", ", array_map(
fn($v) => "{$v}bar",
array_column($data, 'symbol')
)
);
See live code
Array_map() takes every element of the array resulting from array_column() pulling out the values from $data and with an arrow function, appends the string "bar". Then the new array yielded by array_map has the values of its elements joined with ", " to form the expected output which is then displayed.
As a recent comment indicated you could eliminate array_column() and instead write code as follows:
<?php
$data = [
1 => ['symbol' => 'salad'],
2 => ['symbol' => 'wine'],
3 => ['symbol' => 'beer']
];
echo join(", ", array_map(
fn($row) => "{$row['symbol']}bar",
$data
)
);
See live code
Note while this 2nd way, may appear more direct, is it? The fact is that as array_map iterates over $data, the arrow function contains code that requires dereferencing behind the scenes, namely "$row['symbol']".
The join() function is an alias of implode() which
Returns a string containing a string representation of all the array
elements in the same order, with the glue string between each element.
So you need to add the last one by yourself
$data = array (
1 => array (
'symbol' => 'salad'
),
2 => array (
'symbol' => 'wine'
),
3 => array (
'symbol' => 'beer'
)
);
$symbols = array_column($data, 'symbol');
$string_from_array = join($symbols, 'bar');
if(strlen($string_from_array)>0)
$string_from_array .= "bar";
echo($string_from_array);
You can use array_column and implode
$data = array (
1 => array (
'symbol' => 'salad'
),
2 => array (
'symbol' => 'wine'
),
3 => array (
'symbol' => 'beer'
)
);
$res = implode("bar,", array_column($data, 'symbol'))."bar";
Live Demo
Try this:
$symbols = array_column($data, 'symbol');
foreach ($symbols as $symbol) {
$symbol = $symbol."bar";
echo $symbol;
}
btw, you can't expect implode to do what you expect, because it places "bar" between the strings, and there is no between after the last string you get from your array. ;)
Another way could be using a for loop:
$res = "";
$count = count($data);
for($i = 1; $i <= $count; $i++) {
$res .= $data[$i]["symbol"] . "bar" . ($i !== $count ? ", " : "");
}
echo $res; //saladbar, winebar, beerbar
Php demo
I have this php associative array.
array(
'Location_1' => 'Link_1',
'Location_2' => 'Link_2'
)
I would like to convert it into a json output using json_encode() that looks like this;
[{"Location_name":"Location_1","Link_name":"Link_1"},{"Location_name":"Location_2","Link_name":"Link_2"}]
How can this be done? The challenging part to me seems like how to add the Location_name and Link_name in front. Thank you very much.
<?php
// original array
$a = array(
'Location_1' => 'Link_1',
'Location_2' => 'Link_2'
);
// transform
$b = array();
foreach($a as $key=>$value) {
$b[] = array('Location_name'=>$key, 'Link_name'=>$value);
}
// output
echo json_encode($b);
?>
Result:
[{"Location_name":"Location_1","Link_name":"Link_1"},{"Location_name":"Location_2","Link_name":"Link_2"}]
You Can use StdClass anonymous Objects.
<?php
$newArray = array();
$array = array(
'Location_1' => 'Link_1',
'Location_2' => 'Link_2'
);
foreach ($array as $key => $value) {
$object = new StdClass();
$object->Location_name = $key;
$object->Link_name = $value;
$newArray[] = $object;
}
var_dump(json_encode($newArray));
So first things first:
convert it into a json output using json_encode() that looks like this
This is not possible. json_encode just encodes arrays to JSON, you need to do the formatting work yourself.
And on that note
array_map should do the trick.
Try this:
$arr = array(
'Location_1' => 'Link_1',
'Location_2' => 'Link_2'
);
$output = array_map(
function( $key, $val ){
return array(
"Location_name" => $key,
"Link_name" => $val
);
}, array_keys( $arr ), $arr );
echo json_encode( $output );
<?php
$x = array(
"C_Card_ID" => array(
"dbName"=>"CardID",
"type"=>"disabled",
"key"=>"primary"
),
"C_Payroll_ID" => array(
"dbName"=> "PayrollID",
"key"=>"unique"
),
"C_First_Name" => array("dbName"=>"FirstName")
?>
I want keys of $x which has "key" index in its second array. In simple words, i need C_Card_ID and C_Payroll_ID as an output in array, so later i will implode them.
Required output Sample : Array("C_Card_ID","C_Payroll_ID")
Please don't use Loop algo. I need to use some build-in function.
You can use array_filter:
syntax is:
$filtered_array = array_keys(array_filter($x, function($a){ return isset($a['key']); }));
This should do:
$result = array_keys(array_filter($x, function($arr){
return array_key_exists('key', $arr);
}));
Try to use array_slice() like,
<?php
$x = array(
"C_Card_ID" => array(
"dbName"=>"CardID",
"type"=>"disabled","key"=>"primary"
),
"C_Payroll_ID" => array(
"dbName"=> "PayrollID",
"key"=>"unique"
),
"C_First_Name" => array("dbName"=>"FirstName"));
print_r(array_slice(array_keys($x),0,2));
//Outputs
//Array ( [0] => C_Card_ID [1] => C_Payroll_ID )
?>
Tested on http://writecodeonline.com/php/
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'
);