Iterating array/hashmap - php

Question

Edit: Nico Parodi's answer is correct. I will eventually return to finding out why, but for now I will just take it as it is and hope nothing else fails.
I have a table with three fields: "date", "name", "location". I want to group all the records selected from this table based on their date.
By copy-pasting some code from php mysql group by date with yyyy-mm-dd format, I've managed to get this array, date -> name:
$result = mysqli_query($con,"SELECT date, name, location FROM events");
while($row = mysqli_fetch_array($result)) {
$foo[$row['date']][]=$row['name'];
}
Everything's great, I can iterate it without issues. Now I want to store all the row columns as a value for the date key, so I try to store the entire row as a value:
$result = mysqli_query($con,"SELECT date, name, location FROM events");
while($row = mysqli_fetch_array($result)) {
$foo[$row['date']][]=$row;
}
And now I can't iterate it. count($rowCol) seems to give me the nr of columns in all the array for either keys, not just for one. How can I iterate it?
foreach($foo as $date => $events) {
echo $date . ": "; // this is okay
foreach($events as $key => $rowCol){
for ($i = 0; $i<count($rowCol); $i++) {
echo $rowCol[$i] . " ";
}
}
}

Answer 1

for ($i = 0; $i<count($rowCol); $i++) {
echo $rowCol[$i] . " ";
}
$rowCol has the double of fields that you expect as mysqli_fetch_array() fetches as both associative and numeric array.
So,
for ($i = 0; $i<(count($rowCol)/2); $i++) {
echo $rowCol[$i] . " ";
}
should work.

Answer 2

Replace :
for ($i = 0; $i<count($rowCol); $i++) {
echo $rowCol[$i] . " ";
}
By
foreach($rowCol as $k =>$v) {
echo $v . " ";
}

Answer 3

for ($i = 0; $i<count($rowCol); $i++) {
echo $rowCol[$i] . " ";
}
this part of code doesn't work because rowCol is an associative array + numeric array. Try to replace mysqli_fetch_array with mysqli_fetch_row

Answer 4

Can you tell us what's the output of this code? (show plain text, no HTML):
foreach($foo as $date => $event) {
echo $date . ": ";
foreach($event as $key => $value){
print_r($value);
}
echo "\n";
}
Original answer:
$events contains a single event, your code should look more like this:
foreach($foo as $date => $event) {
echo $date . ": ";
foreach($event as $key => $value){
echo $value . " ";
}
echo "\n";
}