What are the common challenges faced when trying to execute multiple functions with a single submit button in PHP?

When trying to execute multiple functions with a single submit button in PHP, a common challenge is ensuring that each function is properly called and executed in the correct order. One solution is to create a single function that calls each individual function in the desired sequence. This way, all functions can be executed with a single click of the submit button. 

<?php
if(isset($_POST['submit'])){
    function1();
    function2();
    function3();
}

function function1(){
    // Function 1 logic here
}

function function2(){
    // Function 2 logic here
}

function function3(){
    // Function 3 logic here
}
?>

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