foreach inside foreach error [duplicate] - php

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show name from inner join with the id [duplicate]
(2 answers)
Closed 5 years ago.
here my code in class.php:
public function select(){
$stmt = $this->conn->prepare("SELECT country FROM `country`") or die($this->conn->error);
if($stmt->execute()){
$result = $stmt->get_result();
return $result;
}
}
public function read(){
$stmt = $this->conn->prepare("SELECT segment FROM `segments`") or die($this->conn->error);
if($stmt->execute()){
$result = $stmt->get_result();
return $result;
}
}
and now in index.php i did this:
<th class="text-center">country</th>
<th class="text-center">segments</th>
</thead>
<tbody>
<?php
require 'class.php';
$conn = new db_class();
$read = $conn->select();
$test = $conn->read();
while($fetch = $read->fetch_array(MYSQLI_ASSOC)&& $fetch1 = $test->fetch_array(MYSQLI_ASSOC)){
foreach ($fetch1 as $field => $values) {
foreach($fetch as $field=>$value){
echo '<tr><td>' . $value . '</td>'
. '<td>'. $values .'</td>';
}
}
}
?>
</tbody>
</table>
im just trying to fetch data from 2 tables and put them in one html table
i get this error for 6 times:
Warning: Invalid argument supplied for foreach() in C:\Program Files (x86)\EasyPHP-DevServer-14.1VC11\data\localweb\segments\countrySegment.php on line 59
im just trying to fetch data from 2 tables and put them in one html table
and if any one know how, i want for every country a drop down menu with segment values inside
any idea? thank u in advance

Answer 1

This because of array pointer issue
foreach ($fetch1 as $field => $values) {
foreach($fetch as $field=>$value){
echo '<tr><td>' . $value . '</td>'
. '<td>'. $values .'</td>';
}
}
first time second foreach prints everything next time it has no value it points beyond the value..
so you need to reset the array using reset
foreach ($fetch1 as $field => $values) {
reset($fetch)
foreach($fetch as $field=>$value){
echo '<tr><td>' . $value . '</td>'
. '<td>'. $values .'</td>';
}
}
or you can save it a temporary variable
foreach ($fetch1 as $field => $values) {
$fetchtmp = $fetch;
foreach($fetchtmp as $field=>$value){
echo '<tr><td>' . $value . '</td>'
. '<td>'. $values .'</td>';
}
}