I have an existing array to which I want to add a value.
I'm trying to achieve that using array_push() to no avail.
Below is my code:
$data = array(
"dog" => "cat"
);
array_push($data['cat'], 'wagon');
What I want to achieve is to add cat as a key to the $data array with wagon as value so as to access it as in the snippet below:
echo $data['cat']; // the expected output is: wagon
How can I achieve that?
So what about having:
$data['cat']='wagon';
$a['123'] = 456; - string '123' is converted to integer key 123.
If you need to add multiple key=>value, then try this.
$data = array_merge($data, array("cat"=>"wagon","foo"=>"baar"));
array_merge.
+. More concisely, the array union assignment operator +=.$data['cat'] = 'wagon';
That's all you need to add the key and value to the array.
You don't need to use array_push() function, you can assign new value with new key directly to the array like..
$array = array("color1"=>"red", "color2"=>"blue");
$array['color3']='green';
print_r($array);
Output:
Array(
[color1] => red
[color2] => blue
[color3] => green
)
$array['color3']='green'. That's exactly what @dusoft did above. Your code is just an obfuscation of that solution.
For Example:
$data = array('firstKey' => 'firstValue', 'secondKey' => 'secondValue');
For changing key value:
$data['firstKey'] = 'changedValue';
//this will change value of firstKey because firstkey is available in array
output:
Array ( [firstKey] => changedValue [secondKey] => secondValue )
For adding new key value pair:
$data['newKey'] = 'newValue';
//this will add new key and value because newKey is not available in array
output:
Array ( [firstKey] => firstValue [secondKey] => secondValue [newKey] => newValue )
Array['key'] = value;
$data['cat'] = 'wagon';
This is what you need. No need to use array_push() function for this. Some time the problem is very simple and we think in complex way :) .
<?php
$data = ['name' => 'Bilal', 'education' => 'CS'];
$data['business'] = 'IT'; //append new value with key in array
print_r($data);
?>
Result
Array
(
[name] => Bilal
[education] => CS
[business] => IT
)
Just do that:
$data = [
"dog" => "cat"
];
array_push($data, ['cat' => 'wagon']);
*In php 7 and higher, array is creating using [], not ()
array_push adds its 2nd+ parameters as new values (not key-value pairings as array_merge does), and PHP 7 happily accepts the array() array syntax (as well as the shorthand [] syntax)