编辑数组并将文件另存为新的 php 文件

Question

There is a file named default.Db.php just containing:

<?php 
// OLD FILE
function get_DbConfig(){
    $config = array (
                'source'    =>  'array',                            
                'host'      =>  'DATABASE_HOST',
                'port'      =>  'DATABASE_PORT',
                'username'  =>  'DATABASE_USER',
                'password'  =>  'DATABASE_PASSWORD',
                'database'  =>  'DATABASE_NAME'
            );
    return $config;
}
require_once './../Common/php/face.php';
?>

What is way to replace $config inside get_dbConfig with my own array? For example, an array where each key has a specific value. After replacing the values inside this array, I will rename the file to Db.php

<?php
// NEW FILE
function get_DbConfig(){
    $config = array (
                'source'    =>  'array',                            
                'host'      =>  'localhost',
                'port'      =>  '3306',
                'username'  =>  'foo',
                'password'  =>  'bar',
                'database'  =>  'foobar'
            );
    return $config;
}
require_once __DIR__.'./../Common/php/OperateDB/DbMgrInterface.php';
?>

Answer 1

First you have to pass argument in your function. after that when you call that function, at that time you have to pass your array in that and assign array value with assign variable.

    <?php
    function get_DbConfig($configdata){
            $config = array (
                'source'    =>  $configdata ['array'],                            
                'host'      =>  $configdata['DATABASE_HOST'],
                'port'      =>  $configdata['DATABASE_PORT'],
                'username'  =>  $configdata['DATABASE_USER'],
                'password'  =>  $configdata['DATABASE_PASSWORD'],
                'database'  =>  $configdata['DATABASE_NAME']
            );
    return $config;
}
require_once './../Common/php/face.php';
?>

Answer 2

I don't know why you want to do this way. There are better methods to achieve this. However, you could do the following:

try {
            // Read the whole file into memory
            $fileStr = file_get_contents('../default.Db.php');
            // Replace each string with a valid value
            $fileStr = str_replace('DATABASE_HOST', HOST, $fileStr);
            $fileStr = str_replace('DATABASE_USER', USER, $fileStr);
            $fileStr = str_replace('DATABASE_PASSWORD', PASSWORD, $fileStr);
            $fileStr = str_replace('DATABASE_NAME', DB_NAME, $fileStr);
            $fileStr = str_replace('DATABASE_PORT', PORT, $fileStr);
            // Write the modified content
            file_put_contents("../default.Db.php", $fileStr);
            // Rename default.Db.php to Db.php
            $isRenamed = rename('../default.Db.php','../Db.php');
            if($isRenamed) {
                require_once './../Db.php';
            }
        }catch(Exception $exc) {

        }