POST.php

  
 <html>

<head>
    <title>Ma première page PHP</title>
</head>

<body>

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <input type="text" name="value"/>
    <input type="submit"/>
</form>

    <?php 
    
    // print( implode($_GET)); 

        if (isset($_POST["value"])) {
        
        echo "Tu as écrit: ".$_POST["value"];  
        } else {
        echo "Il faut que tu renseigné un valeur!";
        }
    
    
    
    
    ?>

</body>

</html>