Interview question
What is the difference between indexed and associative arrays in PHP? PHP में indexed और associative arrays में क्या अंतर है?
Answer
Short Answer
A comparison table in HTML is created using standard table tags: <table>, <thead>, <tr> (rows), <th> (headers), and <td> (data cells).
Code Example
Comparison tables typically have the features listed in the left column, and the items being compared in the subsequent columns.
<table border="1">
<thead>
<tr>
<th>Feature</th>
<th>Product A</th>
<th>Product B</th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>Price</strong></td>
<td>$10</td>
<td>$20</td>
</tr>
<tr>
<td><strong>Storage</strong></td>
<td>50 GB</td>
<td>Unlimited</td>
</tr>
</tbody>
</table>
| टाइप | keys | उदाहरण |
|---|---|---|
| Indexed array | ऑटोमैटिक न्यूमेरिक keys (0,1,2...) | $fruits = ["Apple","Mango"]; |
| Associative array | कस्टम named keys | $user = ["name"=>"Raj","age"=>25]; |
| Multidimensional | array के अंदर array | $users = [["name"=>"Raj"],["name"=>"Amit"]]; |
आम array फंक्शन्स: array_map(), array_filter(), array_reduce(), array_merge(), in_array(), array_keys(), array_search()।
foreach ($user as $key => $value) {\n echo "$key: $value";\n}इंटरव्यू टिप: बताएं कि PHP array अंदर से ordered map होते हैं — "indexed" array भी टेक्निकली integer keys वाला associative array है।
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