Can I use array_push on a SESSION array in php? - php

Question

I have an array that I want on multiple pages, so I made it a SESSION array. I want to add a series of names and then on another page, I want to be able to use a foreach loop to echo out all the names in that array.
This is the session:
$_SESSION['names']
I want to add a series of names to that array using array_push like this:
array_push($_SESSION['names'],$name);
I am getting this error:
array_push() [function.array-push]:
First argument should be an array
Can I use array_push to put multiple values into that array? Or perhaps there is a better, more efficient way of doing what I am trying to achieve?

Answer 1

Yes, you can. But First argument should be an array.
So, you must do it this way
$_SESSION['names'] = array();
array_push($_SESSION['names'],$name);
Personally I never use array_push as I see no sense in this function. And I just use
$_SESSION['names'][] = $name;

Answer 2

Try with
if (!isset($_SESSION['names'])) {
$_SESSION['names'] = array();
}
array_push($_SESSION['names'],$name);

Answer 3

$_SESSION['total_elements']=array();
array_push($_SESSION['total_elements'], $_POST["username"]);

Answer 4

Yes! you can use array_push push to a session array and there are ways you can access them as per your requirement.
Basics:
array_push takes first two parameters array_push($your_array, 'VALUE_TO_INSERT');.
See: php manual for reference.
Example:
So first of all your session variable should be an array like:
$arr = array(
's_var1' => 'var1_value',
's_var2' => 'var2_value'); // dummy array
$_SESSION['step1'] = $arr; // session var "step1" now stores array value
Now you can use a foreach loop on $_SESSION['step1']
foreach($_SESSION['step1'] as $key=>$value) {
// code here
}
The benefit of this code is you can access any array value using the key name for eg:
echo $_SESSION[step1]['s_var1'] // output: var1_value
NOTE: You can also use indexed array for looping like
$arr = array('var1_value', 'var1_value', ....);
BONUS:
Suppose you are redirected to a different page
You can also insert a session variable in the same array you created. See;
// dummy variables names and values
$_SESSION['step2'] = array(
's_var3' => 'page2_var1_value',
's_var4' => 'page2_var2_value');
$_SESSION['step1step2'] = array_merge($_SESSION['step1'], $_SESSION['step2']);
// print the newly created array
echo "<pre>"; // for formatting printed array
var_dump($_SESSION['step1step2']);
echo "<pre>";
OUTPUT:
// values are as per my inputs [use for reference only]
array(4) {
["s_var1"]=>
string(7) "Testing"
["s_var2"]=>
int(4) "2124"
["s_var3"]=>
int(4) "2421"
["s_var4"]=>
string(4) "test"
}
*you can use foreach loop here as above OR get a single session var from the array of session variables.
eg:
echo $_SESSION[step1step2]['s_var1'];
OUTPUT:
Testing
Hope this helps!

Answer 5

Try this, it's going to work :
session_start();
if(!isset($_POST["submit"]))
{
$_SESSION["abc"] = array("C", "C++", "JAVA", "C#", "PHP");
}
if(isset($_POST["submit"]))
{
$aa = $_POST['text1'];
array_push($_SESSION["abc"], $aa);
foreach($_SESSION["abc"] as $key => $val)
{
echo $val;
}
}

Answer 6

<?php
session_start();
$_SESSION['data']= array();
$details1=array('pappu','10');
$details2=array('tippu','12');
array_push($_SESSION['data'],$details1);
array_push($_SESSION['data'],$details2);
foreach ($_SESSION['data'] as $eacharray)
{
while (list(, $value) = each ($eacharray))
{
echo "Value: $value<br>\n";
}
}
?>
output
Value: pappu Value: 10 Value: tippu Value: 12