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PHP String Exercises: Print the next character of a specific character

PHP String: Exercise-14 with Solution

Write a PHP script to print the next character of a specific character.

Pictorial Presentation:

PHP String Exercises: Print the next character of a specific character

Sample character : 'a'
Sample character : 'z'

Sample Solution:

PHP Code:

<?php
$cha = 'a';
$next_cha = ++$cha; 
//The following if condition prevent you to go beyond 'z' or 'Z' and will reset to 'a' or 'A'.
if (strlen($next_cha) > 1) 
{
 $next_cha = $next_cha[0];
 }
echo $next_cha."\n";
?>

Sample Output: 

b

Flowchart :

Flowchart: Print the next character of a specific character

PHP Code Editor:

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Previous: Write a PHP script to get the filename component of the specified path.
Next: Write a PHP script to remove a part of a string from the beginning.

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PHP: Tips of the Day

How to Sort Multi-dimensional Array by Value?

Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:

Example:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual

Ref : https://bit.ly/3i77vCC