php single entry associative array - php

Question

I get data from a .xlsx file, which I also put into an array(named $tableArray, I used PHPExcel for that). now i don't know how I can output even a single entry in my array.
I tried
$tableArray[1];
getting all the entries works with
var_dump($tableArray);
my code:
<?php
$excelReader = PHPExcel_IOFactory::createReaderForFile($fileName);
$excelReader->setReadDataOnly();
$excelObj = $excelReader->load($fileName);
$excelObj->getActiveSheet()->toArray();
$worksheetNames = $excelObj->getSheetNames($fileName);
$tableArray = array();
foreach($worksheetNames as $key => $sheetName){
$excelObj->setActiveSheetIndexByName($sheetName);
$tableArray[$sheetName] = $excelObj->getActiveSheet()->toArray();
}
var_dump($tableArray);
?>

Answer 1

Here's a few tips to help get you started.
If you want to see your array in a cleaner format on your browser, surround the var_dump() in a <pre> tag like so.
<?php
$myArray = [
"orange" => "foo",
"bar" => [
"test" => "more"
]
];
?>
<pre>
<?php var_dump($myArray); ?>
</pre>
This will help you understand your array structure better as it will be easier to read.
Accessing values in arrays is as easy as referencing the key. For example in the array above, if we want the value of orange, just echo $myArray["orange"];
If the value is another array, such as the key bar, and we want the value of test, we can just reference both keys in order echo $myArray["bar"]["test"];
You can use foreach() to loop through your array and perform action on each key => value pair.
<?php
$myArray = [
"orange" => "foo",
"bar" => [
"test" => "more"
]
];
foreach($myArray as $key => $value) {
var_dump($key);
var_dump($value);
}
If you're looking for more detailed information I'd recommend going through some of the courses on Code Academy. It will help you not only with this question, but others involving basic functionality of PHP.
Hope this helps!