count same string in an array in php

Question

I have an array that contains values with the same string, how will I able to count those same string into a number.

example array:

$animals = array('dog','dog','cat','mouse','cat');

output:

dog x2,
cat x2,
mouse x1

Might not be the most elegant or efficient solution, but how about sorting the array, then iterating over it and checking the current element against the previous one and holding counters in a mapping? — JussiV, Apr 09 '18 at 05:53
i want to get not only the number of duplicate string, but also the string itself, ex. dog x2 — nikko, Apr 09 '18 at 05:57

score 2 · Answer 1 · answered Apr 09 '18 at 05:53

2

Use array_count_values

$animals = array('dog','dog','cat','mouse','cat');
$count_values = array_count_values($animals);

print_r($count_values );

Output

Array
(
    [dog] => 2
    [cat] => 2
    [mouse] => 1
)

And Iterate it over like this

foreach($occurences as $key => $item){
    echo $key ." x" .$item .",";
    print "\n";
}

answered Apr 09 '18 at 05:53

Saad Suri

1,352
1
14
26

@nikko I've updated my answer please look at foreach loop – Saad Suri Apr 09 '18 at 05:59

score 1 · Answer 2 · 2018-04-09T06:21:20.450

This would do:

// The verbose way
<?php
   $counts = [];
   $animals = array('dog','dog','cat','mouse','cat');

   foreach ($animals as $value) {
       if (key_exists($value, $counts)) {
           $counts[$value] += 1;
       } else {
           $counts[$value] = 1;
       }
   }
?>

...but php has a method that does exactly that

<?php
    $counts = array_count_values($animals);
?>

and later, if you want to print the occurences

foreach ($counts as $key => $value) {
    echo $key." x".$value."<br />";
}

score 1 · Accepted Answer · answered Apr 09 '18 at 06:03

1

you need to use foreach() with array_count_values() like this

$animals = array('dog','dog','cat','mouse','cat');
$values=array_count_values($animals) ;
foreach ($values as $key=>$value) {
    echo $key ."X". $value;
    echo '<br>';
}

answered Apr 09 '18 at 06:03

Rahul

1,617
1
9
18

this is exactly what i am looking for, thank you – nikko Apr 09 '18 at 06:05
glad to help you – Rahul Apr 09 '18 at 06:06

sunny bhadania · Answer 4 · 2018-04-09T06:08:16.297

0

<?php 
$array =  array('dog','dog','cat','mouse','cat');
$vals = array_count_values($array);
// print_r($vals);
foreach ($vals as $key=>$value) {
  echo $key ." X". $value;
  echo '<br>';
}
?>

edited Apr 09 '18 at 06:08

answered Apr 09 '18 at 05:55

sunny bhadania

423
3
5

thanks for your answer, BTW i want to get not only the number of duplicate string, but also i want to print the string , ex. dog x2 – nikko Apr 09 '18 at 06:00
Add some description to your answer. – TIGER Apr 09 '18 at 06:30

count same string in an array in php

4 Answers4