Is there any way to pass values and variables between php scripts?
Formally, I tried to code a login page and when user enter wrong input first another script will check the input and if it is wrong, site returns to the last script page and show a warning like "It is wrong input". For this aim, I need to pass values from scripts I guess.
Regards... :P
To pass info via GET:
header('Location: otherScript.php?var1=val1&var2=val2');
Session:
// first script
session_start();
$_SESSION['varName'] = 'varVal';
header('Location: second_script.php'); // go to other
// second script
session_start();
$myVar = $_SESSION['varName'];
Post: Take a look at this.
You should look into session variables. This involves storing data on the server linked to a particular reference number (the "session id") which is then sent by the browser on each request (generally as a cookie). The server can see that the same user is accessing the page, and it sets the $_SESSION superglobal to reflect this.
For instance:
a.php
session_start(); // must be called before data is sent
$_SESSION['error_msg'] = 'Invalid input';
// redirect to b.php
b.php
<?php
session_start();
echo $_SESSION['error_msg']; // outputs "Invalid input"
Can't you include (or include_once or require) the other script?
include another script, its code gets "pasted" in the including one, so it gets the same things you would have writing the code directly in the first one.include can't find the specified file it will raise a warning, require will throw a fatal exception.The quick way would be to use either global or session variables.
global $variable = 'something';
The 'better' way of doing it would be to include the script and pass the variable by parameter like
// script1.php contains function 'add3'
function add3( $value ) {
return $value + 3;
}
// script2.php
include "script1.php";
echo 'Value is '.add3(2); // Value is 5
global $variable; $variable = 'something'; so declaration and assignment are not in one line.I would say that you could also store a variable in cache if you really need.
I use extract() method to pass variable among PHP Scripts. It look like below example:
1. File index.php
<?php
$data = [
'title'=>'hello',
'content'=>'hello world'
];
extract($data);
require 'content.php';
2. File content.php :
<?php
echo $title;
echo $content;
