Un souci dans formulaire php avec récup champ msql

$name_of_member    = (isset($_POST['name_of_member']))    ? Rec($_POST['name_of_member'])    : '';
$email   = (isset($_POST['email']))   ? Rec($_POST['email'])   : '';
$Current_trinom_name   = (isset($_POST['Current_trinom_name']))   ? Rec($_POST['Current_trinom_name'])   : '';
//etc.
if (($name_of_member != '') && ($email != '') && ($Current_trinom_name != ''))
//etc.
if (mail($email_recipient, $Current_trinom_name, $headers))
//etc.
echo '<form id="contact" method="post" action="' . $form_action . '">';
        echo '<input type="hidden" name="Rk_Hist" value="' . $_GET["Rk_Hist"] . '">';
        echo '<input type="hidden" name="form_modif" value="1">';
        echo '<input type="hidden" name="modifier" value="1">';
        echo 'Name of member: <input type="text" size="100" id="name_of_member" name="name_of_member" value="' .stripslashes($name_of_member). '" tabindex="1"><br>';
        echo 'E-mail: <input type="text" size="100" id="email" name="email" value="' .stripslashes($email). '" tabindex="2"><br><br><br><br>';
        echo 'Current trinominal name (do not change !): <input type="text" size="100" name="Current_trinom_name" value="' . $result[0]["Current_trinom_name"] . '"><br>';
        echo '<div style="text-align:center;"><input type="submit" name="send" value="Send !"></div>';
        echo '</form>';

$name_of_member    = (isset($_POST['name_of_member']))    ? Rec($_POST['name_of_member'])    : '';
$email   = (isset($_POST['email']))   ? Rec($_POST['email'])   : '';
$Current_trinom_name   = (isset($_POST['Current_trinom_name']))   ? Rec($_POST['Current_trinom_name'])   : '';
$Subfamily = (isset($_POST['Subfamily'])) ? Rec($_POST['Subfamily']) : '';
//etc.
if (($name_of_member != '') && ($email != '') && ($Current_trinom_name != '') && ($Subfamily != ''))
//etc.
if (mail($email_recipient, $Current_trinom_name, $Subfamily, $headers))
//etc.
        echo '<form id="contact" method="post" action="' . $form_action . '">';
        echo '<input type="hidden" name="Rk_Hist" value="' . $_GET["Rk_Hist"] . '">';
        echo '<input type="hidden" name="form_modif" value="1">';
        echo '<input type="hidden" name="modifier" value="1">';
        echo 'Name of member: <input type="text" size="100" id="name_of_member" name="name_of_member" value="' .stripslashes($name_of_member). '" tabindex="1"><br>';
        echo 'E-mail: <input type="text" size="100" id="email" name="email" value="' .stripslashes($email). '" tabindex="2"><br><br><br><br>';
        echo 'Current trinominal name (do not change, please !): <input type="text" size="100" name="Current_trinom_name" value="' . $result[0]["Current_trinom_name"] . '"><br>';
        echo 'Subfamily: <textarea style="vertical-align: top;" rows="10" cols="100" wrap="virtual" name="Subfamily">' . $result[0]["Subfamily"] . '</textarea><br>';
        echo '<div style="text-align:center;"><input type="submit" name="send" value="Send !"></div>';
        echo '</form>';

if (mail($email_recipient, $Current_trinom_name, $headers))

//derived from php-astux.info/script-formulaire-contact (thank you)
    $recipient = 'blabla@gmail.com';
    $copy = 'yes';
    $form_action = '';
    $message_sent = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br><br>Your message has been well received, thank you.";
    $message_not_sent = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br><br>An error occurred during processing your message, please try again.";
    $message_invalid_form = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br><br>Please check all fields are filled and syntax of e-mail is correct.";
    function Rec($text)
    {
        $text = htmlspecialchars(trim($text), ENT_QUOTES);
        if (1 === get_magic_quotes_gpc())
        {
            $text = stripslashes($text);
        }
     
        $text = nl2br($text);
        return $text;
    };
    function IsEmail($email)
    {
        $value = preg_match('/^(?:[\w\!\#\$\%\&\'\*\+\-\/\=\?\^\`\{\|\}\~]+\.)*[\w\!\#\$\%\&\'\*\+\-\/\=\?\^\`\{\|\}\~]+@(?:(?:(?:[a-zA-Z0-9_](?:[a-zA-Z0-9_\-](?!\.)){0,61}[a-zA-Z0-9_-]?\.)+[a-zA-Z0-9_](?:[a-zA-Z0-9_\-](?!$)){0,61}[a-zA-Z0-9_]?)|(?:\[(?:(?:[01]?\d{1,2}|2[0-4]\d|25[0-5])\.){3}(?:[01]?\d{1,2}|2[0-4]\d|25[0-5])\]))$/', $email);
        return (($value === 0) || ($value === false)) ? false : true;
    }
    $name    = (isset($_POST['name']))    ? Rec($_POST['name'])    : '';
    $email   = (isset($_POST['email']))   ? Rec($_POST['email'])   : '';
    $title   = (isset($_POST['title']))   ? Rec($_POST['title'])   : '';
    $message = (isset($_POST['message'])) ? Rec($_POST['message']) : '';
    $email = (IsEmail($email)) ? $email : '';
    $err_form = false;
    if (isset($_POST['send']))
    {
        if (($name != '') && ($email != '') && ($title != '') && ($message != ''))
        {
            $headers  = 'From:'.$name.' <'.$email.'>' . "\r\n";
            if ($copy == 'yes')
            {
                $target = $recipient.';'.$email;
            }
            else
            {
                $target = $recipient;
            };
     
            $message = str_replace("'","'",$message);
            $message = str_replace("’","'",$message);
            $message = str_replace(""",'"',$message);
            $message = str_replace('<br>','',$message);
            $message = str_replace('<br />','',$message);
            $message = str_replace("<","<",$message);
            $message = str_replace(">",">",$message);
            $message = str_replace("&","&",$message);
               $num_emails = 0;
            $tmp = explode(';', $target);
            foreach($tmp as $email_recipient)
            {
                if (mail($email_recipient, $title, $message, $headers))
                    $num_emails++;
            }
     
            if ((($copy == 'yes') && ($num_emails == 2)) || (($copy == 'no') && ($num_emails == 1)))
            {
                echo '<p>'.$message_sent.'</p>';
            }
            else
            {
                echo '<p>'.$message_not_sent.'</p>';
            };
        }
        else
        {
            echo '<p>'.$message_invalid_form.'</p>';
            $err_form = true;
        };
    };
    if (($err_form) || (!isset($_POST['send'])))
    {
        echo '
        <form id="contact" method="post" action="'.$form_action.'">
        <fieldset><legend>Your coordinates</legend>
            <p><label for="name">Name of member:</label><input type="text" size="100" id="name" name="name" value="'.stripslashes($name).'" tabindex="1" /></p>
            <p><label for="email">Email :</label><input type="text" size="100" id="email" name="email" value="'.stripslashes($email).'" tabindex="2" /></p>
        </fieldset>
     
        <fieldset><legend>Your message :</legend>
            <p><label for="title">title :</label><input type="text" size="100" id="title" name="title" value="'.stripslashes($title).'" tabindex="3" /></p>
            <p><label for="message">Message :</label><textarea id="message" name="message" style="vertical-align: top;" tabindex="4" cols="60" rows="8">'.stripslashes($message).'</textarea></p>
        </fieldset>
     
        <div style="text-align:center;"><input type="submit" name="send" value="Send !"></div>
        </form>';

//jusque là, inchangé dans étape 2
echo 'Subfamily: <textarea style="vertical-align: top;" rows="10" cols="100" wrap="virtual" name="Subfamily">' . $result[0]["Subfamily"] . '</textarea><br>';
        echo '<p>variable 1'.$email_recipient.'</p>';
        echo '<p>variable 2'.$Current_trinom_name.'</p>';
        echo '<p>variable 3'.$Subfamily.'</p>';
        echo '<p>variable 4'.$headers.'</p>';
        echo '<div style="text-align:center;"><input type="submit" name="send" value="Send !"></div>';
        //echo "<input type='submit' name='send' value='Send !'>";
        echo '</form>';

foreach($tmp as $email_recipient)
            {
                echo '<p>variable 1'.$email_recipient.'</p>';
                echo '<p>variable 2'.$Current_trinom_name.'</p>';
                echo '<p>variable 3'.$Subfamily.'</p>';
                echo '<p>variable 4'.$headers.'</p>';
                echo '<p>variable 5'.$name_of_member.'</p>';
                echo '<p>variable 6'.$email.'</p>';
                if (mail($email_recipient, $Current_trinom_name, $Subfamily, $headers))

<?php include 'session_start.php'; ?>
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="UTF-8">
//etc.
    <?php
    error_reporting(E_ALL);
    require ("../connect.php");
    try {
        $connexion = new PDO('mysql:host=' . $PARAM_hote . ';dbname=' . $PARAM_nom_bd, $PARAM_utilisateur, $PARAM_mot_passe, array(
    PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
    } catch (Exception $e) {
        echo 'Erreur : ' . $e->getMessage() . '<br />';
        echo 'N° : ' . $e->getCode();
    }
    
    echo '<body><div id="header">';
//etc.
    echo '<div id="center">';
    
    $Reversed_name = null;
    if (empty($result[0])) {
        include 'xxxwelcomexxx.txt';
      } 
      elseif (isSet($_GET["modifier"]) and $_GET["modifier"] == 1) {
          
          // Herein is section "modifier" direct to database then by electronic form
          // Check if form has been submitted
          if (isSet($_GET["form_modif"])) {
                 echo "Change Profile of : " . $result[0]["Reversed_name"] . "<br>";
                
                $update = "UPDATE taxabase1 SET Family='"  . $_GET["Family"] . "', Subfamily='"  . $_GET["Subfamily"] . "' WHERE taxabase1.Rk_Hist = :id";
                // to neutralize update in database add respectively /* and */ just below on lines 76 to 79
                /*echo "Changed contents has been received for  " . $_GET["Family"] . " to replace previous contents " .$result[0]["Family"] . ". Request update with : " .  $update . " <br>";
                $requete = $connexion->prepare($update);
                $requete->bindParam(':id', $_GET["Rk_Hist"], PDO::PARAM_INT);
                $requete->execute();*/
                echo "<p>";
                echo "<a href='samepage.php?Rk_Hist=" . $_GET["Rk_Hist"] . "'>Back to modified Profile</a>";
                echo "</p>";
          }
          else {
        echo "<h6>Additions and Corrections Form for  " . $result[0]["Reversed_name"] . "</h6>";
        echo '<p>Please type hereafter your additions [text to be added] (between +++ +++) and your corrections [text to be deleted] (between --- ---) </p><p>Simple… if no text is mentioned in between --- ---, then you mean it is a simple addition<br>           if no text is mentioned in between +++ +++, then you mean it is a simple suppression<br>           if text is mentioned both in between --- --- and in between +++ +++, then you mean it is a simple replacement<br>           if no text is mentioned between --- --- or between +++ +++, then you mean the text is not to be modified.</p><p> </p>';
        // to be modified for a form sent by e-mail
        $recipient = 'destinataire@gmail.com';
        $copy = 'yes';
        $form_action = '';
        $message_sent = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br><br>Your message has been well received, thank you.";
        $message_not_sent = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br><br>An error occurred during processing your message, please try again.";
        $message_invalid_form = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br><br>Please check all fields are filled and syntax of e-mail is correct.";
        function Rec($text)
    {
        $text = htmlspecialchars(trim($text), ENT_QUOTES);
        if (1 === get_magic_quotes_gpc())
        {
            $text = stripslashes($text);
        }
     
        $text = nl2br($text);
        return $text;
    };
        function IsEmail($email)
    {
        $value = preg_match('/^(?:[\w\!\#\$\%\&\'\*\+\-\/\=\?\^\`\{\|\}\~]+\.)*[\w\!\#\$\%\&\'\*\+\-\/\=\?\^\`\{\|\}\~]+@(?:(?:(?:[a-zA-Z0-9_](?:[a-zA-Z0-9_\-](?!\.)){0,61}[a-zA-Z0-9_-]?\.)+[a-zA-Z0-9_](?:[a-zA-Z0-9_\-](?!$)){0,61}[a-zA-Z0-9_]?)|(?:\[(?:(?:[01]?\d{1,2}|2[0-4]\d|25[0-5])\.){3}(?:[01]?\d{1,2}|2[0-4]\d|25[0-5])\]))$/', $email);
        return (($value === 0) || ($value === false)) ? false : true;
    }
    $name_of_member    = (isset($_POST['name_of_member']))    ? Rec($_POST['name_of_member'])    : '';
    $email   = (isset($_POST['email']))   ? Rec($_POST['email'])   : '';
    $Current_trinom_name   = (isset($_POST['Current_trinom_name']))   ? Rec($_POST['Current_trinom_name'])   : '';
    $Subfamily = (isset($_POST['Subfamily'])) ? Rec($_POST['Subfamily']) : '';
    $email = (IsEmail($email)) ? $email : '';
    $err_form = false;
    if (isset($_POST['send']))
    {
        //if (($name_of_member != '') && ($email != '') && ($title != '') && ($message != ''))
        if (($name_of_member != '') && ($email != '') && ($Current_trinom_name != '') && ($Subfamily != ''))
        {
            $headers  = 'From:'.$name_of_member.' <'.$email.'>' . "\r\n";
            if ($copy == 'yes')
            {
                $target = $recipient.';'.$email;
            }
            else
            {
                $target = $recipient;
            };
     
            /*$message = str_replace("'","'",$message);
            $message = str_replace("’","'",$message);
            $message = str_replace(""",'"',$message);
            $message = str_replace('<br>','',$message);
            $message = str_replace('<br />','',$message);
            $message = str_replace("<","<",$message);
            $message = str_replace(">",">",$message);
            $message = str_replace("&","&",$message);*/
               $num_emails = 0;
            $tmp = explode(';', $target);
            foreach($tmp as $email_recipient)
            {
                echo '<p>variable 1'.$email_recipient.'</p>';
                echo '<p>variable 2'.$Current_trinom_name.'</p>';
                echo '<p>variable 3'.$Subfamily.'</p>';
                echo '<p>variable 4'.$headers.'</p>';
                echo '<p>variable 5'.$name_of_member.'</p>';
                echo '<p>variable 6'.$email.'</p>';
                if (mail($email_recipient, $Current_trinom_name, $Subfamily, $headers))
                //if (mail($email_recipient, $title, $message, $headers))
                    $num_emails++;
            }
     
            if ((($copy == 'yes') && ($num_emails == 2)) || (($copy == 'no') && ($num_emails == 1)))
            {
                echo '<p>'.$message_sent.'</p>';
            }
            else
            {
                echo '<p>'.$message_not_sent.'</p>';
            };
        }
        else
        {
            echo '<p>'.$message_invalid_form.'</p>';
            $err_form = true;
        };
    };
    if (($err_form) || (!isset($_POST['send'])))
    {
        echo '<form id="contact" method="post" action="' . $form_action . '">';
        //echo "<form action='samepage.php' method='post'>";
        echo '<input type="hidden" name="Rk_Hist" value="' . $_GET["Rk_Hist"] . '">';
        echo '<input type="hidden" name="form_modif" value="1">';
        echo '<input type="hidden" name="modifier" value="1">';
        //echo '<p><label for="name">name :</label><input type="text" size="100" id="name" name="name" value="'.stripslashes($name).'" tabindex="1" /></p>';
        echo 'Name of member: <input type="text" size="100" id="name_of_member" name="name_of_member" value="' .stripslashes($name_of_member). '" tabindex="1"><br>';
        echo 'E-mail: <input type="text" size="100" id="email" name="email" value="' .stripslashes($email). '" tabindex="2"><br><br><br><br>';
        echo 'Current trinominal name (do not change, please !): <input type="text" size="100" name="Current_trinom_name" value="' . $result[0]["Current_trinom_name"] . '"><br>';
        echo 'Subfamily: <textarea style="vertical-align: top;" rows="10" cols="100" wrap="virtual" name="Subfamily">' . $result[0]["Subfamily"] . '</textarea><br>';
        echo '<div style="text-align:center;"><input type="submit" name="send" value="Send !"></div>';
        //echo "<input type='submit' name='send' value='Send !'>";
        echo '</form>';
        };
          }
     
    } else {
    //etc.