echo variable from a string

Question

I had created this function that simply accepts some arguments to take some information from a table, and echoes the result mixed with some HTML that is passed with args

functions.php

function loop_show($conn,$table,$div){
        $string_query="select * from $table";
        $sql=mysqli_query($conn,$string_query);
        while($result=mysqli_fetch_array($sql)){
            echo "$div";
            
        }
}

when calling the function from another page

index.php

<?php loop_show($conn,"projects","<div>Hello $result[name] , Your age is $result[age]</div>") ?>

the problem is that I don't have $result variable in index.php but I just want to tell the function that it should echo the $result in specified place

Answer 1

You can use a callback function for this.

function loop_show($conn,$table,$divfun){
    $string_query="select * from $table";
    $sql=mysqli_query($conn,$string_query);
    while($result=mysqli_fetch_array($sql)){
        echo $divfun($result);
    }
}

loop_show($conn,"projects", 
    function($result) { 
        return "<div>Hello $result[name] , Your age is $result[age]</div>";
    } );