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PHP Exercises: Changes the color of first character of a word

PHP: Exercise-9 with Solution

Write a PHP script, which changes the color of the first character of a word.

Sample string : PHP Tutorial

Sample Solution: -

PHP Code:

<?php
$text = 'PHP Tutorial';
$text = preg_replace('/(\b[a-z])/i','<span style="color:red;">\1</span>',$text);
echo $text;
?>

Sample Output: 

PHP Tutorial

View the output in the browser

preg_replace() function:

Syntax:

mixed preg_replace ( mixed $pattern , mixed $replacement , mixed $subject [, int $limit = -1 [, int &$count ]] )

Searches subject for matches to pattern and replaces them with replacement. The function returns an array if the subject parameter is an array, or a string otherwise. If matches are found, the new subject will be returned, otherwise subject will be returned unchanged or NULL if an error occurred.

Flowchart:

Flowchart: Changes the color of first character of a word

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Previous: Write a PHP script, which will return the following components of the url 'https://www.w3resource.com/php-exercises/php-basic-exercises.php'.
Next: Write a PHP script, to check whether the page is called from 'https' or 'http'.

What is the difficulty level of this exercise?

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PHP: Tips of the Day

Mutates the original array to filter out the values specified

Example:

<?php
function tips_pull(&$items, ...$params)
{
  $items = array_values(array_diff($items, $params));
  return $items;
}

$items = ['x', 'y', 'z', 'x', 'y', 'z'];
print_r(tips_pull($items, 'y', 'z'));
?>

Output:

Array
(
    [0] => x
    [1] => x
)