ARRAY_FLIP(3) 1 ARRAY_FLIP(3)array_flip - Exchanges all keys with their associated values in an arraySYNOPSIS
array array_flip (array $array)
DESCRIPTION array_flip(3) returns an array in flip order, i.e. keys from $array become values and values from $array become keys.
Note that the values of $array need to be valid keys, i.e. they need to be either integer or string. A warning will be emitted if a value
has the wrong type, and the key/value pair in question will not be included in the result.
If a value has several occurrences, the latest key will be used as its value, and all others will be lost.
PARAMETERS
o $array
- An array of key/value pairs to be flipped.
RETURN VALUES
Returns the flipped array on success and NULL on failure.
EXAMPLES
Example #1
array_flip(3) example
<?php
$input = array("oranges", "apples", "pears");
$flipped = array_flip($input);
print_r($flipped);
?>
The above example will output:
Array
(
[oranges] => 0
[apples] => 1
[pears] => 2
)
Example #2
array_flip(3) example : collision
<?php
$input = array("a" => 1, "b" => 1, "c" => 2);
$flipped = array_flip($input);
print_r($flipped);
?>
The above example will output:
Array
(
[1] => b
[2] => c
)
SEE ALSO array_values(3), array_keys(3), array_reverse(3).
PHP Documentation Group ARRAY_FLIP(3)
Check Out this Related Man Page
ARRAY_COUNT_VALUES(3) 1 ARRAY_COUNT_VALUES(3)array_count_values - Counts all the values of an arraySYNOPSIS
array array_count_values (array $array)
DESCRIPTION array_count_values(3) returns an array using the values of $array as keys and their frequency in $array as values.
PARAMETERS
o $array
- The array of values to count
RETURN VALUES
Returns an associative array of values from $array as keys and their count as value.
ERRORS /EXCEPTIONS
Throws E_WARNING for every element which is not string or integer.
EXAMPLES
Example #1
array_count_values(3) example
<?php
$array = array(1, "hello", 1, "world", "hello");
print_r(array_count_values($array));
?>
The above example will output:
Array
(
[1] => 2
[hello] => 2
[world] => 1
)
SEE ALSO count(3), array_unique(3), array_values(3), count_chars(3).
PHP Documentation Group ARRAY_COUNT_VALUES(3)
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