The PHP Array

The Array in PHP is not a the real array datatype we know in other programming languages like Java, it is actually an ordered map, The good thing about the map (ordered) datatype is that it can be treated as other datatypes: an actual array, a linked list, a dictionary etc.

You can instantiate an array in PHP in three different ways:

$array = array(‘me’, ‘and’, ‘you’);
$array = array(‘first’ => ‘me’, ‘second’ => ‘and’, ‘third’ => ‘you’);
$array = array(array(‘one’), ‘two’, array(‘three’));

Today, I spent useful hours creating an array function that already existed in PHP, I felt so bad when I found out. Please don’t do the same mistake. Find below a list of PHP array functions, use your time for something more productive.

Array functions in PHP:

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 column in the input array
array_combine — Creates an array by using one array for keys and another for its values
array_count_values — Counts all the values of an array
array_diff_assoc — Computes the difference of arrays with additional index check
array_diff_key — Computes the difference of arrays using keys for comparison
array_diff_uassoc — Computes the difference of arrays with additional index check which is performed by a user supplied callback function
array_diff_ukey — Computes the difference of arrays using a callback function on the keys for comparison
array_diff — Computes the difference of arrays
array_fill_keys — Fill an array with values, specifying keys
array_fill — Fill an array with values
array_filter — Filters elements of an array using a callback function
array_flip — Exchanges all keys with their associated values in an array
array_intersect_assoc — Computes the intersection of arrays with additional index check
array_intersect_key — Computes the intersection of arrays using keys for comparison
array_intersect_uassoc — Computes the intersection of arrays with additional index check, compares indexes by a callback function
array_intersect_ukey — Computes the intersection of arrays using a callback function on the keys for comparison
array_intersect — Computes the intersection of arrays
array_key_exists — Checks if the given key or index exists in the array
array_keys — Return all the keys or a subset of the keys of an array
array_map — Applies the callback to the elements of the given arrays
array_merge_recursive — Merge two or more arrays recursively
array_merge — Merge one or more arrays
array_multisort — Sort multiple or multi-dimensional arrays
array_pad — Pad array to the specified length with a value
array_pop — Pop the element off the end of array
array_product — Calculate the product of values in an array
array_push — Push one or more elements onto the end of array
array_rand — Pick one or more random entries out of an array
array_reduce — Iteratively reduce the array to a single value using a callback function
array_replace_recursive — Replaces elements from passed arrays into the first array recursively
array_replace — Replaces elements from passed arrays into the first array
array_reverse — Return an array with elements in reverse order
array_search — Searches the array for a given value and returns the corresponding key if successful
array_shift — Shift an element off the beginning of array
array_slice — Extract a slice of the array
array_splice — Remove a portion of the array and replace it with something else
array_sum — Calculate the sum of values in an array
array_udiff_assoc — Computes the difference of arrays with additional index check, compares data by a callback function
array_udiff_uassoc — Computes the difference of arrays with additional index check, compares data and indexes by a callback function
array_udiff — Computes the difference of arrays by using a callback function for data comparison
array_uintersect_assoc — Computes the intersection of arrays with additional index check, compares data by a callback function
array_uintersect_uassoc — Computes the intersection of arrays with additional index check, compares data and indexes by separate callback functions
array_uintersect — Computes the intersection of arrays, compares data by a callback function
array_unique — Removes duplicate values from an array
array_unshift — Prepend one or more elements to the beginning of an array
array_values — Return all the values of an array
array_walk_recursive — Apply a user function recursively to every member of an array
array_walk — Apply a user supplied function to every member of an array
arsort — Sort an array in reverse order and maintain index association
asort — Sort an array and maintain index association

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I hope this helps somebody.