I want to echo multi-dimensional array by using foreach loop - php

Question

<?php
$StudScore = array(
"Mary" => array(
"physics" => 35,
"maths" => 30,
"chemistry" => 39
),
"Tom" => array(
"physics" => 30,
"maths" => 32,
"chemistry" => 29
),
"Jon" => array(
"physics" => 31,
"maths" => 22,
"chemistry" => 39
)
);
foreach ($StudScore as $key => $value) {
echo "<li>$key</li>";
if (is_array($value)) {
echo "<ul>";
echoArray($value);
echo "</ul>";
} else {
echo "<ul><li>$value</li></ul>";
}
}
?>
Till now i have tried to print array but i am getting below error kindly help me out with this .
Output :
Mary
Fatal error: Call to undefined function echoArray()
i want it to be print as example:
Mary = physics:35,maths:30,chemistry:39
Tom = physics:30,maths:32,chemistry:29
Jon = physics:31,maths:22,chemistry:39

Answer 1

It has to be either echo var_dump($value); or echo print_r($value); if you want to print the WHOLE array. There is no function called echoArray() in PHP.
When you only want to print ONE key/value from the array, you also have to use echo $value;, since the keys/values are only strings.
See https://www.php.net/manual/en/function.var-dump.php and https://www.php.net/manual/en/function.print-r.php

Answer 2

<?php
foreach ($StudScore as $name => $value) {
echo $name." = ";
foreach ($value as $subject => $marks) {
echo $subject.":".$marks.",";
}
echo "<br/>";
}
?>
Finally i got my answer it give output like :
Mary = physics:35,maths:30,chemistry:39
Tom = physics:30,maths:32,chemistry:29
Jon = physics:31,maths:22,chemistry:39