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POhow to prevent array_merge to renumber numeric keys
 

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    <p>i have an array which looks like this:</p> <pre><code>Array ( [0] =&gt; Array ( [unit_id] =&gt; 1 [unit_name] =&gt; Clown Fish) [1] =&gt; Array ( [unit_id] =&gt; L [unit_name] =&gt; Liter ) [2] =&gt; Array ( [unit_id] =&gt; 2 [unit_name] =&gt; Elephant ) [3] =&gt; Array ( [unit_id] =&gt; 3 [unit_name] =&gt; Water Bottle ) [4] =&gt; Array ( [unit_id] =&gt; 4 [unit_name] =&gt; Office Seating ) [5] =&gt; Array ( [unit_id] =&gt; 5 [unit_name] =&gt; Green Green Grass ) ) </code></pre> <p>then, i wrote a function</p> <pre><code>function array_to_list($arr_data, $str_key, $str_value) { $arr_list = array(); if (is_array($arr_data)) { foreach($arr_data as $arr_value) { if (isset($arr_value[$str_key]) &amp;&amp; isset($arr_value[$str_value])) { $arr_list = array_merge($arr_list, array($arr_value[$str_key] =&gt; $arr_value[$str_value])); } } } return $arr_list; } </code></pre> <p>to convert the array to look like this</p> <pre><code>Array ( [1] =&gt; Clown Fish ) [L] =&gt; Liter ) [2] =&gt; Elephant ) [3] =&gt; Water Bottle ) [4] =&gt; Office Seating ) [5] =&gt; Green Green Grass ) ) </code></pre> <p>but the output, instead, is</p> <pre><code>Array ( [0] =&gt; Clown Fish ) [L] =&gt; Liter ) [1] =&gt; Elephant ) [2] =&gt; Water Bottle ) [3] =&gt; Office Seating ) [4] =&gt; Green Green Grass ) ) </code></pre> <p>i assume this has something to do with the nature of array_merge itself, which according to php manual "Values in the input array with numeric keys will be renumbered with incrementing keys starting from zero in the result array." </p> <p>is there a way to so i can produce the intended result with or without array_merge?</p>
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    1. COhttp://www.programmingfacts.com/merging-arrays-with-reindex-and-without-reindexing/
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    2. COthanks for answering so fast. it is embarrassing for me to see the solution is so simple yet i can't find it when googling a while ago. thank you.
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