Cleaner way to echo multi dimension array - php

Question

echo "{$line['text_1']}";
the above echo works fine ,however when it comes to 2d array, in my sublime, only {$line['text_2']} this part work fine. output error both sublime and browser
echo "$array_2d[{$line['text_1']}][{$line['text_2']}]";
any idea?
update
echo "$array_2d[$line['text_1']][$line['text_2']]";
using xampp, error Parse error: syntax error, unexpected '[', expecting ']' in C:\xampp\htdocs
and I'm just outputting a value from the mysql_fetch_assoc. I can do it in another way by echo '' however I'm trying to make my code easier for future editting and code copy paste
and yes I'm doing things like
echo "The price is $array_2d[$line['text_1']][$line['text_2']]"
with lots of html code in the double quote.

Answer 1

Why are you trying to output the array?
if it is for debugging purposes, you can just use the native php functions print_r() or var_dump()

Answer 2

You should be able to say
echo "item is {$array_2d[$line['text1']][$line['text2']]}";
to get to a subelement.
Of course, this is only really useful when it's not the only thing in the string. If you're only echoing the one value, you don't need the quotes, and things get simpler.
echo $array_2d[$line['text1']][$line['text2']];

Answer 3

this should work :
echo $array_2d[$line['text_1']][$line['text_2']];

Answer 4

When echoing variables, you don't have to use the quotes:
echo $array_2d[$line['text_1']][$line['text_2']];
If you do need to output something with that string, the concatentation operator can help you:
echo "Array: " . echo $array_2d[$line['text_1']][$line['text_2']];

Answer 5

You can use print_r() to echo the array.
e.g.:
print_r($array);
Output will be:
Array ( [test] => 1 [test2] => 2 [multi] => Array ( [multi] => 1 [multi2] => 2 ) )
Also you can use this to make it more readable in a HTML context:
echo '<pre>';
print_r($array);
echo '</pre>';
Output will be:
Array
(
[test] => 1
[test2] => 2
[multi] => Array
(
[multi] => 1
[multi2] => 2
)
)

Answer 6

You can use print_r() or var_dump() to echo an array.
The print_r() displays information about a variable in a way that's readable by humans whereas the var_dump() function displays structured information about variables/expressions including its type and value.
$array = 'YOUR ARRAY';
echo "<pre>";
print_r($array);
echo "</pre>";
or
$array = 'YOUR ARRAY';
var_dump($array);

Answer 7

Example variations
I'm wondering why you would try using the $line array as a key to access data in $array_2d.
Anyway, try this:
echo($line['text_1'].'<br>');
this:
echo($array_2d['text_1']['text_2'].'<br>');
and finally this (based on your "the $line array provides the keys for the $array_2d" array example)
$key_a = $line['text_1'];
$key_b = $line['text_2'];
echo($array_2d[$key_a][$key_b].'<br>');
Which can also be written shorter like this:
echo($array_2d[$line['text_1']][$line['text_2']].'<br>');
Verifying/Dumping the array contents
To verify if your arrays hold the data you expect, do not use print_r. Do use var_dump instead as it will return more information you can use to check on any issues you think you might be having.
Example:
echo('<pre>');
var_dump($array_2d);
echo('</pre>');
Differences between var_dump and print_r
The var_dump function displays structured information of a variable (or expression), including its type and value. Arrays are explored recursively with values indented to show structure. var_dump also shows which array values and object properties are references.
print_r on the other hand displays information about a variable in a readable way and array values will be presented in a format that shows keys and elements. But you'll miss out on the details var_dump provides.
Example:
$array = array('test', 1, array('two', 'more'));
output of print_r:
Array
(
[0] => test
[1] => 1
[2] => Array
(
[0] => two
[1] => more
)
)
output of var_dump:
array(3) {
[0]=> string(4) "test"
[1]=> int(1)
[2]=> array(2)
{
[0]=> string(3) "two"
[1]=> string(4) "more"
}
}