StackOverflow2013

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15847576
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2013-04-06T05:56:48.763
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2013-04-06T05:56:48.763
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2017-05-23T10:25:12.037
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Body
Quoted from <a href="https://stackoverflow.com/questions/6791479/search-array-array-filter-vs-loop#comment-8060388">Search Array : array_filter vs loop</a>: <blockquote> <code>array_filter()</code> cannot handle [multi-dimensional arrays] natively. You're looking for a single value inside an array? <code>array_filter()</code> is not the best way to do this because you can stop iteration when you found the value you've been looking for - <code>array_filter()</code> doesn't do that. Filter a set of values from a larger set? Most likely that <code>array_filter()</code> is faster than a hand-coded <code>foreach</code>-loop because it's a built-in function. – <a href="https://stackoverflow.com/users/11354/stefan-gehrig">Stefan Gehrig</a> </blockquote> Using a <a href="http://php.net/manual/en/control-structures.foreach.php" rel="nofollow noreferrer">php <code>foreach</code> loop</a> is probably the easier of the two to read: <pre><code>function getItem($haystack, $needle) { foreach ($haystack as $hay) { if ($hay->meta_key == $needle) { return $hay->meta_value; } } return FALSE; } echo getItem($items, 'Email of Attendee'); // Returns 'some-email@gmail.com' </code></pre> However, as the quote supposes, for a larger array, you may want to go with something like php's <a href="http://php.net/manual/en/function.array-filter.php" rel="nofollow noreferrer"><code>array_filter()</code></a>: <pre><code>function metaKeyIsEmail($obj) { return $obj->meta_key == 'Email of Attendee'; } // array_filter() will return an array containing all items // that returned TRUE for the callback metaKeyIsEmail() $items_matched = array_filter($items, 'metaKeyIsEmail'); // If there was at least one match, take it off the front of // the array and get its meta_value. Otherwise use FALSE. $matched_value = !empty($items_matched) ? array_shift($items_matched)->meta_value : FALSE; echo $matched_value; // Returns 'some-email@gmail.com' </code></pre>
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1. This table or related slice is empty.
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1. POHow to get a value from within an object that is within an array
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