How to remove duplicate values from an array in PHP and count the occurrence?

Question

How to remove duplicate values from an array in PHP and count the occurrence of every element? I have this array

• foo
• bar
• foo

I want the result to be in array like this

        value   freq

        ----    ----

        foo       2

        bar       1

Thanks

Answer 1

To remove duplicates from the table use array_unique() function.

Answer 2

Something like this perhaps (untested)

$freq = array();
foreach($arr as $val) {
 $freq[$val] = 0;
}
foreach($arr as $val) {
 $freq[$val]++;
}

Answer 3

You want array_count_values(), followed by an array_unique().

$arr = array('foo','bar','foo');
print_r(array_count_values($arr));

$arr = array_unique($arr);
print_r($arr);

gives:

Array ( [foo] => 2 [bar] => 1 )
Array ( [0] => foo [1] => bar )

Answer 4

so simple , php have function

$a=array("Cat","Dog","Horse","Dog");
    print_r(array_count_values($a));

The output of the code above will be:

Array ( [Cat] => 1 [Dog] => 2 [Horse] => 1 )