function only returns one value multiple times - php

Question

I have this function:
function get_content($text_to_match) {
$query = "SELECT * ";
$query .= "FROM table_name ";
$query .= "WHERE one_column_name LIKE '%{$text_to_match}%' OR another_column_name LIKE '%{$text_to_match}%'";
$cont = mysqli_query($connection, $query);
if($content = mysqli_fetch_assoc($cont)) {
return $content;
} else {
return null;
}
}
But when I call it like:
<div>
<?php
for ($i = 1; $i < count(get_content("text_to_match")); $i++) {
echo '<article>' .
'<h3>' . get_content("text_to_match")["string1"] . '</h3>'.
'<p>' . get_content("text_to_match")["string2"] . '</p>' .
'</article>';
}
?>
</div>
I only get the first match in the DB repeated as many times as the number of found items.
Where have I gone wrong?

Answer 1

use this code then fetch data properly
while($content = mysql_fetch_array($cont))
{
return $content;
}

Answer 2

Your logic is at fault. You are calling get_content function to get all matches for the loop, as well as to get individual elements out of the list. This is:
bad logic - the 2nd use case doesn't make sense
excessive - you shouldn't need to run a database query just to output an already retrieved result
What you probably want to do is:
foreach (get_content('text_to_match') as $content) {
echo '<article>';
echo '<h3>' . $content['string1'] . '</h3>';
echo '<p>' . $content['string2'] . '</p>';
echo '</article>';
}

Answer 3

With a few modifications in combination with tips from #Anant and #Unix One's answer, I arrived at this working solution:
Function definition
function get_content($text_to_match, $multiple=false) {
$query = "SELECT * ";
$query .= "FROM table_name ";
$query .= "WHERE one_column_name LIKE '%{$text_to_match}%' OR another_column_name LIKE '%{$text_to_match}%'";
$cont = mysqli_query($connection, $query);
if ($multiple) {
$content_array = [];
while($content = mysqli_fetch_array($cont)) {
$content_array[] = $content;
}
return $content_array;
} else {
if($content = mysqli_fetch_assoc($cont)) {
return $content;
} else {
return null;
}
}
}
Function calls
<?php
/* multiple items */
foreach(get_content("text_to_match", true) as $content) {
echo '<article>' .
'<h3>' . $content["string1"] . '</h3>' .
'<p>' . $content["string2"] . '</p>' .
'</article>';
}
?>
<?php
/* one item */
echo get_content("text_to_match")["string"];
?>