PHP: print all the items of an array [duplicate] - php

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Just need a comma separated list from PHP/MySQL query [duplicate]
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Closed 2 years ago.
My goal: insert into a variable an array of items coming from a query and then print it
steps:
launch the query
do something with php
print the variable $report = 'this is your list: $list';
tried this:
$myquery = mysqli_query($dbconnection, "SELECT ...");
while($row = mysqli_fetch_assoc($myquery)) {
$my_array = $row['field'];
echo "$my_array, "; /* here I've the full list*/
}
$report = 'this is your list:' .$my_array. '.';
echo "$report"; /*I've only one item and not all the list*/

Answer 1

Your first echo is called several times because it is in the loop.
In every iteration you are replacing your content of $my_array.
Instead, try to attach it:
$my_array[] = $row['field'];
For more information see https://www.php.net/manual/de/language.types.array.php

Answer 2

This is normal.
Your while loop doing a "step" for each row found with your query.
You assigned $my_array as the "column" with the name field.
So at the end of the while loop, you'll get only the last column field of the last row.
Instead, try this
$myquery = mysqli_query($dbconnection, "SELECT ...");
$myWholeList = ''; // HERE
while($row = mysqli_fetch_assoc($myquery)) {
$my_array = $row['field'];
echo "$my_array, ";
$myWholeList .= '$my_array '; // HERE
}
$report = 'this is your list:' .$my_array. '.';
echo "$myWholeList"; // HERE
I've done a string concatenation, but you can do it with array and print_r() function. Have a look on this thread to see how to append data to an array.
mysqli_fetch_array while loop columns
EDIT:
Based on #isabella 's comment, she wants to display 7 items of array.
Two way :
Use print_r() or var_dump() which is the best to display an array (without taking care about rendering)
Add to $myWholeList variable each item.
e.g.
$myquery = mysqli_query($dbconnection, "SELECT ...");
$myWholeList = ''; // HERE
while($row = mysqli_fetch_assoc($myquery)) {
$my_array = $row['field'];
echo "$my_array, ";
// HERE
foreach($row as $field) {
$myWholeList .= $field . ' ';
}
$myWholeList .= '<br>'; // NEW LINE
}
$report = 'this is your list:' .$my_array. '.';
echo "$myWholeList"; // HERE