默认情况下如何向所有opencart页面添加自定义php函数

Question

I need to place a form on every page in an OpenCart system. Is it possible that I can include a PHP function somwhere so that it shows on every page?

Something like:

<?php 
require_once('../function.php');
test(1); 
?>

I just need to know which .tpl or .php file to put it in.

What i did is in

/system/startup.php

require_once(' http://domain.com/orderform/test123.php/ ');

file test123.php structure as

<?php 
require_once('../function.php');
test(1); 
?>

Its working fine , but i am seeing a line on the top of the site saying this

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at http://domain.com/orderform/test123.php/:42 ) in /home/domain/public_html/system/library/session.php on line 12

Answer 1

I Think(not tested) u need this ...

You can add function in header.php So header will be available on all pages and you can use your function on all pages

myfunciton(){echo "hello";}


opencart22\catalog\controller\common\header.php

Answer 2

In system/helper you can create your own file eg other.php

// system/helper/other.php
function smpleFunction() {
  echo "Hi this works..!";
}

Now you need to include, add the following line

// system/startup.php 
require_once(DIR_SYSTEM . 'helper/other.php');

Now you can directly call the smpleFunction() any where you want.

Answer 3

Create a file name static.php in /catalog/controller/information/

// /catalog/controller/information/static.php
function newfunction() {
  echo "I am new !!";
}

Now need to add that file on system/startup.php by following

// //system/startup.php 
require_once(DIR_SYSTEM . '/catalog/controller/information/static.php');

Now you can directly call the newfunction() any where you want.

Answer 4

In system/library you can create your own functions file eg functions.php

 //system/library/functions.php
 function testfuntion(){
  echo "This is test function";
 }

add the following code on index.php to load library functions.php

// Cart
$registry->set('cart', new Cart($registry));  

// your library functions
$registry->set('functions', new Functions($registry));  

now you can use anywhere this function by following code.

$this->functions->testfuntion();