在类函数中轻松迭代php

Question

I'm trying to create a nice and easy iterator and it worked at first, then I realized I'd need more information for the function so I tried to extend it and well it did not work.

Example Usage

$easyCMS->iterate($post,
     echo $content[0];
     echo $content[1];
 );

Class Function

public function iterate($d,$fn){
   $this->item = $d;
   foreach($this->item as $post){
     echo $fn;
   }
}

Current Index.php Usage

$post = $easyCMS->my_query('SELECT * FROM  `newsPost`');
//returns array
$easyCMS->iterate($post,
   $content[0]."<br>",
   $content[1]."<br>",
   $content[2]."<br>",
       $content[3]."<br>",
       $content[4]."<br>",
);
 //$post would be the first argument and after that would be what we want our function to do.

I get the error =>

Parse error: syntax error, unexpected ';' in .../index.php on line 23

Which I know that it's the constant $content[num] but I'd like to know how I'd do this for I know I could with JavaScript using the call method.

My database table looks something like

id: 1 == content: "Whats up" == ...etc

I want my code to iterate over these so then I can write like so

$easyCMS->iterate($post,
  '<div class="hello">'.$content[0].'</div><div id="post_'.$content[1].'"><div class="content">'.$content[2].'</div>'
);

Answer 1

Here is the best way for an easy iterator, took me some time but I finally solved it.

Class Function

public function iterate($d,$fn){
     foreach($d as $item){
        $txt = str_replace('{author}',$item["author"],$fn);
    $txt = str_replace('{id}',$item["id"],$txt );
    $txt = str_replace('{content}',$item["content"],$txt);
    $txt = str_replace('{date}',$item["date"],$txt);
    echo $txt;
   }
}

PHP page IE index.php

$post = $easyCMS->my_query('SELECT * FROM  `newsPost`');
$easyCMS->iterate($post,'<div class="hello">{author}</div><div id="post_{id}"><div class="content">{content}</div></div>');

$easyCMS->my_query is just a regular query which returns specific information

my_query

public function my_query($sql)
{
     $array=array();//add an array
    $query = mysqli_query($this->connect,$sql);
    if($query > 0){
    $c = mysqli_num_rows($query);//get how many rows there are
    if($c > 1){//if greater than one push into the array
      while($fetch = mysqli_fetch_array($query)){//while loop to push
        array_push($array, $fetch);
      }
      return $array;
    }else{
     return mysqli_fetch_row($query);//rows is only one
    }
    }else{
    return "No such query";//if the query does not exist!
    }
}