select.php

<?php
function select(){
	global $connection;
	$query = " SELECT * ";
	$query .= " FROM m1 ";
	$result = mysqli_query($connection,$query);
	while($row=mysqli_fetch_assoc($result)){  
			$output = $row["id"] ; 
			$output .=  $row["name"]  ;
			$output .= $row["lastname"]; 
			$output .= "<a href=\"edit.php?id=<?php ";
			$output .=  $row["id"];
			$output .= "?>";
			$output .= "name=\"edit\">Edit</a>";
			$output .= "<br>";
	}
	return $output;		 
}
?>

selectupdate.php

function select(){
	$output='';
	global $connection;
	$query = ' SELECT * ';
	$query .= 'FROM m1 ';
	$result = mysqli_query($connection,$query);
	$output .= "<table><tr><th>ID</th><th>NAME</th><th>LASTNAME</th></tr></table>";
	if(mysqli_num_rows($result) > 0){
		
	    while($row=mysqli_fetch_assoc($result)){

            $output .= "{$row['id']}";
            $output .= "&nbsp";
            $output .= "{$row['name']}";
            $output .= "&nbsp";
            $output .= "{$row['lastname']}";
            $output .= "&nbsp";
            $output .= "<a href='edit.php?id={$row['id']}'>Edit </a>" ;
            $output .= "<br>";    
		}
		return $output;
	}
	
	 
}

selectupdateجواب میده