PHP Array Exercises : Lower-case and upper-case, all elements in an array
36. Convert Array Elements to Lower and Upper Case
Write a PHP script to lower-case and upper-case, all elements in an array.
Sample Solution:
PHP Code:
<?php
// Define an array with string values
$colors = array( "Red", "Green", "Black", "White");
// Display the original array using print_r
print_r($colors);
// Use array_map and strtolower to create an array with lowercase versions of each string
$lower_colors = array_map('strtolower', $colors);
// Display the array containing lowercase versions
print_r($lower_colors);
// Use array_map and strtoupper to create an array with uppercase versions of each string
$upper_colors = array_map('strtoupper', $colors);
// Display the array containing uppercase versions
print_r($upper_colors);
?>
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:
For more Practice: Solve these Related Problems:
- Write a PHP script to convert all array elements to lowercase using array_map() and display the modified array.
- Write a PHP function to convert array elements to uppercase and then merge the original and converted arrays into a single result.
- Write a PHP program to toggle the case of each element in an array and output both versions side by side.
- Write a PHP script to use array_walk() to change the case of each array element based on a parameter indicating 'upper' or 'lower'.
Go to:
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