Php add duplicate values inside an array

Question

I have an array which contain multiple values inside it, all i want is to find duplicate items and add the number of times they are inside an array. Here goes an example

$someVar = array('John','Nina','Andy','John','Aaron','John','Zack','Kate','Nina');

I want my final result to look like

John = 3;
Nina = 2;

and so on.

EDIT | These values are dynamic i have no idea what these names going to be.

Thanks

possible duplicate of Summarizing a javascript array of strings — Niet the Dark Absol
– Niet the Dark Absol, Commented Jun 21, 2012 at 19:06
I just answered this exact question earlier today. Only difference being that was in JavaScript, but converting it to PHP is trivial. — Niet the Dark Absol
– Niet the Dark Absol, Commented Jun 21, 2012 at 19:07

nickb · Accepted Answer · 2012-06-21 19:06:48Z

4

Use array_count_values() and array_filter() to achieve this.

$result = array_filter( array_count_values( $someVar), function( $el) {
    return $el > 1; 
});

$result will be an associative array containing the names as keys and the number of times they occur as values, but only if they were duplicated in the $someVar array.

Here is a demo showing the correct output.

answered Jun 21, 2012 at 19:06

nickb

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2 Comments

user963725 Over a year ago

just checked the demo , it's exactly what i want... thanks a lot

user963725 Over a year ago

if have used $el >= 1, so that i can also get those which are only for one time...

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