two dimension array with assoc and for loop php - php

Question

I write that code but i got error
$tablica = [
'xd'=>['jabłka', 'wiśnie', 'gruszki'],
'xd'=>['jabłska', 'wisssśnie', 'grussssszki']
];
$n=count($tablica);
echo "<table border=1>";
for($i = 0; $i <count($tablica); ++$i) {
echo "<tr>";
for($x = 0; $x < count($tablica[$i]); $x++){
echo "<td>".$tablica[$i][$x]."</td><br>";
}
echo "</tr>";
}
echo "</table>";
it's simple but when i add assoc for 1st dimension it's broke with that error
Notice: Undefined offset: 0 in C:\wamp64\www\projects\xd\1.php on line 10
Warning: count(): Parameter must be an array or an object that implements Countable in C:\wamp64\www\projects\xd\1.php on line 10

Answer 1

You are adding complexity when there is no need to.
When using associative arrays, foreach is usually a best way to iterate.
You can replace your code with:
$tablica = [
'xd'=>['jabłka', 'wiśnie', 'gruszki'],
'xd'=>['jabłska', 'wisssśnie', 'grussssszki']
];
echo "<table border=1>";
foreach($tablica as $tr) {
echo "<tr>";
foreach($tr as $td) {
echo "<td>".$td."</td>";
}
echo "</tr>";
}
echo "</table>";
PS: you have duplicated key named xd. Then PHP will only get the last one.

Answer 2

If you want to stick with using for() loops, then the problem is that your array has xd and xd1 as the keys, but your trying to access them with $i which is 0 and 1. What you can do is create an array of the keys (I've set $keys using array_keys()) and then index that using $keys[$i]...
$tablica = [
'xd'=>['jabłka', 'wiśnie', 'gruszki'],
'xd1'=>['jabłska', 'wisssśnie', 'grussssszki']
];
$n=count($tablica);
$keys = array_keys($tablica);
echo "<table border=1>";
for($i = 0; $i < $n; ++$i) {
echo "<tr>";
for($x = 0; $x < count($tablica[$keys[$i]]); $x++){
echo "<td>".$tablica[$keys[$i]][$x]."</td><br>";
}
echo "</tr>";
}
echo "</table>";