PHP Program to Print Even Length Words in a String
This article will show you how to print even-length words in a string using PHP. Printing even-length words from a given string is a common task that can be approached in several ways.
Table of Content
- Using explode() and foreach() Functions
- Using array_filter() and strlen() Functions
- Using preg_split() and array_filter() Functions
Using explode() and foreach() Functions
The explode() function can be used to split the string into an array of words, and then a foreach loop can be employed to filter and print the words with an even length.
PHP
<?php function EvenLengthWords($str) { // Split the string into an // array of words $words = explode(' ', $str); // Iterate through each word and // print if it has an even length foreach ($words as $word) { if (strlen($word) % 2 === 0) { echo $word . " "; } } } // Driver code $str = "Welcome to Beginner for Beginner, A computer science portal"; EvenLengthWords($str); ?> |
Output
to Beginner, computer portal
Using array_filter() and strlen() Functions
The array_filter() function can be utilized along with a custom callback function to filter out the words with an even length.
PHP
<?php function isEvenLength($word) { return strlen($word) % 2 === 0; } function EvenLengthWords($str) { // Split the string into an // array of words $words = explode(' ', $str); // Use array_filter to keep only // even-length words $evenLengthWords = array_filter($words, 'isEvenLength'); // Print the even-length words echo implode(' ', $evenLengthWords); } // Driver code $str = "Welcome to Beginner for Beginner, A computer science portal"; EvenLengthWords($str); ?> |
Output
to Beginner, computer portal
Using preg_split() and array_filter() Functions
The preg_split() function can be employed to split the string using a regular expression, and then array_filter() can be used to filter out words with even lengths.
PHP
<?php function EvenLengthWords($str) { // Split the string into an array of // words using a regular expression $words = preg_split('/\s+/', $str); // Use array_filter to keep only // even-length words $evenLengthWords = array_filter($words, function ($word) { return strlen($word) % 2 === 0; }); // Print the even-length words echo implode(' ', $evenLengthWords); } // Driver code $str = "Welcome to Beginner for Beginner, A computer science portal"; EvenLengthWords($str); ?> |
Output
to Beginner, computer portal
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