PHP link same page with link and send data via $_POST - php

Question

I have a database table with (NumSection (id) and NomSection)
In my page I want display all data from 'NomSection' like a link. And when I click on the link I want open my actual page with a $_POST['nomSection'] and display data of this section.
From my page index.php :
<div>
<?php
$array = returnAllSection();
foreach ($array as $section) {
// link to same page but with a $_POST['NomSection'], For the //moment I just display it.. I don't know how do with php
echo $section['NomSection'].'<br/>';
}
?>
</div>
<div>
<?php
// here I want have $array = returnAll('NomSection) or returnAll() //if empty (this function return ALL if empty or All of a section, can I just //put returnAll($_POST[nomSection]) ?
$array = returnAll();
foreach ($array as $section) {
echo 'Titre: ' .$section['TitreArticle'].'<br/>';
echo 'Date: ' .$section['DateArticle'].'<br/>';
echo 'Texte: ' .$section['TexteArticle'].'<br/>';
echo '<br/>';
}
?>
</div>
my functions: (works good)
function returnAll($arg = 'all') {
global $connexion;
if($arg == 'all'){
$query = "select
NumArticle,
TitreArticle,
TexteArticle,
DateArticle,
RefSection,
NomSection
from Articles, Sections where
RefSection = NumSection or RefSection = null;";
$prep = $connexion->prepare($query);
$prep->execute();
return $prep->fetchAll();
}
else {
$query = "select NumArticle,
TitreArticle,
TexteArticle,
DateArticle,
RefSection,
NomSection
from Articles, Sections where
RefSection = NumSection and NomSection = :arg;";
$prep = $connexion->prepare($query);
$prep->bindValue(':arg', $arg, PDO::PARAM_STR);
$prep->execute();
return $prep->fetchAll();
}
}
function returnAllSection() {
global $connexion;
$query = "select * from Sections;";
$prep = $connexion->prepare($query);
$prep->execute();
return $prep->fetchAll();
}

Answer 1

In order to post you'll need to use a form or javascript ajax post, as far as I know. Here I show a clunky form post approach that might work for what you are trying to accomplish.
<?php
function returnAllSection() {
return array(
array('NomSection' => 'foo'),
array('NomSection' => 'bar'),
array('NomSection' => 'baz'),
);
}
?>
<?php
$array = returnAllSection();
foreach ($array as $section) { ?>
<form action="" method="POST">
<button type="submit">NomSection</button>
<input type="hidden" name="NomSection" value="<?php echo htmlspecialchars($section['NomSection']); ?>">
</form>
<?php } ?>
<?php
if (isset($_POST['NomSection'])) {
error_log(print_r($_POST,1).' '.__FILE__.' '.__LINE__,0);
// do something with NomSection...
}
?>