array_flip
Exchanges all keys with their associated values in an array
&reftitle.description;
arrayarray_flip
arrayarray
array_flip 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.
&reftitle.parameters;
array
An array of key/value pairs to be flipped.
&reftitle.returnvalues;
Returns the flipped array on success and &null; on failure.
&reftitle.examples;
<function>array_flip</function> example
]]>
&example.outputs;
0
[apples] => 1
[pears] => 2
)
]]>
<function>array_flip</function> example : collision
1, "b" => 1, "c" => 2);
$flipped = array_flip($input);
print_r($flipped);
?>
]]>
&example.outputs;
b
[2] => c
)
]]>
&reftitle.seealso;
array_values
array_keys
array_reverse