How to call function of one php file from another php file and pass parameters to it?

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I want to call a function in one PHP file from a second PHP file and also pass two parameters to that function. How can I do this?

I am very new to PHP. So please tell me, should I include the first PHP file into the second?

Please show me an example. You can provide some links if you want.

Yes include the first file into the second. That's all.

See an example below,

File1.php :

<?php
  function first($int, $string){ //function parameters, two variables.
    return $string;  //returns the second argument passed into the function
  }
?>

Now Using include (http://php.net/include) to include the File1.php to make its content available for use in the second file:

File2.php :

<?php
  include 'File1.php';
  echo first(1,"omg lol"); //returns omg lol;
?>

In PHP, can I pass a variable to a new page without using session , How can I pass value from one page to another in PHP without session? Passing Arguments to a Function by Reference. In PHP there are two ways you can pass arguments to a function: by value and by reference. By default, function arguments are passed by value so that if the value of the argument within the function is changed, it does not get affected outside of the function.

file1.php

<?php

    function func1($param1, $param2)
    {
        echo $param1 . ', ' . $param2;
    }

file2.php

<?php

    require_once('file1.php');

    func1('Hello', 'world');

See manual

include - Manual, If the include occurs inside a function within the calling file, then all of the Another way to "include" a PHP file into a variable is to capture the output by file will only occasionally exist - e.g. a dev environment has it, but a prod one doesn't.) include('common-functions.php'); echo 'Name of first employee is ' . getEmployeeFullName(1); You can include any number of files to another file. But including comes with a little performance cost. Therefore include only the files which are really required.

files directory:

Project->

-functions.php

-main.php

functions.php

function sum(a,b){
 return a+b;
}
function product(a,b){
return a*b;
}

main.php

require_once "functions.php";
echo "sum of two numbers ". sum(4,2);
echo "<br>"; //  create break line
echo "product of two numbers ".product(2,3);

The Output Is :

sum of two numbers 6 product of two numbers 6

Note: don't write public before function. Public, private, these modifiers can only use when you create class.

How to call a function from different .php file!, How to call a function from different .php file! instructions); Use that variable inside of the echo statement to display what the function returns with the phrase that's already there. This should make the code challenge pass. The function is already defined in the file you are including. The code challenge is asking you to: Include the file. Assign what's returned from the function to a variable (the name of the variable is in the instructions) Use that variable inside of the echo statement to display what the function returns with the phrase that's already there.

you can write the function in a separate file (say common-functions.php) and include it wherever needed.

function getEmployeeFullName($employeeId) {
// Write code to return full name based on $employeeId
}

You can include common-functions.php in another file as below.

include('common-functions.php');
echo 'Name of first employee is ' . getEmployeeFullName(1);

You can include any number of files to another file. But including comes with a little performance cost. Therefore include only the files which are really required.

How to send variables from one file to another? - PHP, The alternative is require only files with PHP functions and classes. step you execute your SendMail() function, passing to it that variable as  I am wondering how to pass one variable from one php file to another continuously or discontinuously. Files do not contain variables at all. They are just code on a disk, they are static. What you are referring to is either some kind of process (a file in execution) or a session (a sequence of processes started by the same user).

Pass a PHP variable to another file, The WordPress template functions don't support passing variables (to my knowledge) by default, so you need to write your own function. Functions only have access to either values that you pass into them, or global variables. Hence, your veri() function can see the $_POST variables because, by their nature, they are global variables. But any other values needed must either be declared global (a Bad Thing, IMO) or passed in as parameters.

PHP - File Inclusion, There are two PHP functions which can be used to included one PHP file into another PHP file. The include() Function; The require() Function. This is a strong​  !Help with API call from vb. Must be trampling memory or something! /CLR floating point performance, inter-assembly function call performance; Problems with browse to files using an API call; python2.2: signals and exceptions: interrupted system call; exec, passthru disabled so how to call C++ .exe file? How to call different methods in one PHP

[Solved] Pass variable value from one .php to another .php , php file. I give an image example: http://i.imgur.com/Og7St.png[^] I hope I didn'  Including files is very useful when you want to include the same PHP, HTML, or text on multiple pages of a website. PHP include and require Statements. It is possible to insert the content of one PHP file into another PHP file (before the server executes it), with the include or require statement.

Comments
  • To prevent unauthorized access to the file content with all your functions in it, bury the functions (File1.php) above the DOCUMENT_ROOT and change its permissions to 'rwxr-x--x'.
  • I've split my functions into separate files to include where needed.