w3resource

PHP Array Exercises : Lower-case and upper-case, all elements in an array

PHP Array: Exercise-36 with Solution

Write a PHP script to lower-case and upper-case, all elements in an array.

Sample Solution:

PHP Code:

<?php
$colors = array( "Red", "Green", "Black", "White"); 
print_r($colors);

$lower_colors = array_map('strtolower', $colors);
print_r($lower_colors);
$upper_colors = array_map('strtoupper', $colors);
print_r($upper_colors);
?>

Sample Output:

Array                                                       
(                                                           
    [0] => Red                                              
    [1] => Green                                            
    [2] => Black                                            
    [3] => White                                            
)                                                           
Array                                                       
(                                                           
    [0] => red                                              
    [1] => green                                            
    [2] => black                                            
    [3] => white                                            
)                                                           
Array                                                       
(                                                           
    [0] => RED                                              
    [1] => GREEN                                            
    [2] => BLACK                                            
    [3] => WHITE                                            
)

Flowchart:

Flowchart: PHP - Lower-case and upper-case, all elements in an array

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a PHP script to trim all the elements in an array using array_walk function.
Next: Write a PHP script to count the total number of times a specific value appears in an array.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.

PHP: Tips of the Day

PHP: Where does PHP store the error log? (php5, apache, fastcgi, cpanel)

PHP stores error logs in /var/log/apache2 if PHP is an apache2 module. Shared hosts are often storing log files in your root directory /log subfolder. But...if you have access to a php.ini file you can do this:

error_log = /var/log/php-scripts.log

According to rinogo's comment: If you're using cPanel, the master log file you're probably looking for is stored (by default) at

/usr/local/apache/logs/error_log

If all else fails you can check the location of the log file using

<?php phpinfo(); ?>

Ref : https://bit.ly/2EffgH5

 





We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook