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PHP | Find the occurrences of a given element in an array

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mahmoud2506
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2022-05-25
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Given an array and an element, we have to find the occurrences of the element in the array.

To find the occurrences of a given element in an array, we can use two functions,

  1. array_keys()
    It returns an array containing the specified keys (values).
  2. count()
    It returns the total number of elements of an array i.e. count of the elements.

Firstly, we will call array_keys() function with the input array (in which we have to count the occurrences of the specified element) and element, array_keys() will return an array containing the keys, then we will call the function count() and pass the result of the array_keys() which will finally return the total number of occurrences of that element.

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mahmoud2506
2022-05-25
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PHP code to find the occurrences of a given element

<?php
//an array of the string elements
$array = array(
    "The", 
    "Quick", 
    "Brown", 
    "Fox", 
    "Jumps", 
    "Right", 
    "Over", 
    "The", 
    "Lazy", 
    "Dog"
    );

//word/element to find the the array 
$word= "The";
//finding the occurances
$wordCount=count(array_keys($array, $word));
//printing the result
echo "Word <b>" .$word ."</b> Appears " .$wordCount ." time(s) in array\n";

//word/element to find the the array 
$word= "Hello";
//finding the occurances
$wordCount=count(array_keys($array, $word));
//printing the result
echo "Word <b>" .$word ."</b> Appears " .$wordCount ." time(s) in array\n";
?>

Output

Word The Appears 2 time(s) in array
Word Hello Appears 0 time(s) in array

Explanation:

Here, we have an array $array with the string elements and then assigning the element to $word to find its occurrences, as mentioned the above example, element "The" appears two times in the $array and element "Hello" doesn't appear.

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