


How to Append Elements to Multidimensional Arrays Using Different Sub-Array Structures in PHP?
Oct 24, 2024 am 08:15 AMAppending to Multidimensional Arrays Using array_push
Problem
Given a multidimensional array with sub-arrays recipe_type and cuisine, how do you append new elements to them using the array_push function?
Solution
For Appending to recipe_type:
To add elements to the recipe_type sub-array while maintaining its sequential index, use the following syntax:
<code class="php">$newdata = [ 'wpseo_title' => 'test', 'wpseo_desc' => 'test', 'wpseo_metakey' => 'test' ]; $recipe_type[] = $newdata;</code>
For Appending to cuisine:
Alternatively, for the cuisine sub-array, which also has sequential indices, you can use array_push directly:
<code class="php">array_push($cuisine, $newdata);</code>
Associative Sub-Array Considerations
Note that the wpseo_title, wpseo_desc, and wpseo_metakey keys in the $newdata array are associative. You can only append to associative sub-arrays by directly manipulating the array, as in the first example for $recipe_type.
Example
Using the provided multidimensional array $md_array, here's how to add a new element to recipe_type:
<code class="php">$md_array['recipe_type'][] = [ 'wpseo_title' => 'test', 'wpseo_desc' => 'test', 'wpseo_metakey' => 'test' ];</code>
Conclusion
By using the appropriate method of adding elements, you can effectively extend multidimensional arrays with new data, regardless of the sub-arrays' index structure.
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