Returns an array with all keys from array lowercased or uppercased. Numbered indices are left as is. Parameters ¶. array. The array to work on. case.
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— Changes the case of all keys in an array; array_chunk — Split an array into chunks; array_column — Return the values from a single column in the input array ...
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The key() function simply returns the key of the array element that's currently being pointed to by the internal pointer. It does not move the pointer in any ...
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array_change_key_case — Changes the case of all keys in an array · array_chunk — Split an array into chunks · array_column — Return the values from a single ...
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There's a lot of multidimensional array_keys function out there, but each of them only merges all the keys in one flat array. Here's a way to find all the keys ...
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An array in PHP is actually an ordered map. A map is a type that associates values to keys. This type is optimized for several different uses; it can be treated ...
The following example demonstrates how to create a two-dimensional array, how to specify keys for associative arrays, and how to skip-and-continue numeric ...
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array_key_exists() returns true if the given key is set in the array. key can be any value possible for an array index. Parameters ¶. key. Value to check.
Returns an array containing the results of applying the callback function to the corresponding value of array (and arrays if more arrays are provided) used as ...
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It's worth nothing that array_walk can not be used to change keys in the array. The function may be defined as (&$value, $key) but not (&$value, &$key). Even ...
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