php array functions

1$colors = array("blue","green","red");
2
3//delete element in array by value "green"
4if (($key = array_search("green", $colors)) !== false) {
5    unset($colors[$key]);
6}

1$key_of_max_value = array_search(max($arrCompare),$arrCompare);

1print_r(deep_delete_keys($arr,'country'));
2
3function deep_delete_keys($arr, $keys) {
4    if (!is_array($keys)) $keys = array($keys);
5    $filteredArr = array_diff_key( $arr, array_flip( $keys ) );
6    foreach ($filteredArr as &$val) {
7        if (is_array($val)) {
8            $val = deep_delete_keys($val, $keys);
9        }
10    }
11    return $filteredArr;
12}

1
2<?php
3$array = array("foo", "bar", "hello", "world");
4var_dump($array);
5?>
6
7

1
2<?php
3// array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
4foreach (range(0, 12) as $number) {
5    echo $number;
6}
7
8// The step parameter
9// array(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
10foreach (range(0, 100, 10) as $number) {
11    echo $number;
12}
13
14// Usage of character sequences
15// array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i');
16foreach (range('a', 'i') as $letter) {
17    echo $letter;
18}
19// array('c', 'b', 'a');
20foreach (range('c', 'a') as $letter) {
21    echo $letter;
22}
23?>
24
25

1array_change_key_case()	Changes all keys in an array to lowercase or uppercase
2array_chunk()	Splits an array into chunks of arrays
3array_column()	Returns the values from a single column in the input array
4array_combine()	Creates an array by using the elements from one "keys" array and one "values" array
5array_count_values()	Counts all the values of an array
6array_diff()	Compare arrays, and returns the differences (compare values only)
7array_diff_assoc()	Compare arrays, and returns the differences (compare keys and values)
8array_diff_key()	Compare arrays, and returns the differences (compare keys only)
9array_diff_uassoc()	Compare arrays, and returns the differences (compare keys and values, using a user-defined key comparison function)
10array_diff_ukey()	Compare arrays, and returns the differences (compare keys only, using a user-defined key comparison function)
11array_fill()	Fills an array with values
12array_fill_keys()	Fills an array with values, specifying keys
13array_filter()	Filters the values of an array using a callback function
14array_flip()	Flips/Exchanges all keys with their associated values in an array
15array_intersect()	Compare arrays, and returns the matches (compare values only)
16array_intersect_assoc()	Compare arrays and returns the matches (compare keys and values)
17array_intersect_key()	Compare arrays, and returns the matches (compare keys only)
18array_intersect_uassoc()	Compare arrays, and returns the matches (compare keys and values, using a user-defined key comparison function)
19array_intersect_ukey()	Compare arrays, and returns the matches (compare keys only, using a user-defined key comparison function)