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
// Define a text string
$text = 'PHP Tutorial';
// Use a regular expression to replace the first letter of each word with a span element with red color
$text = preg_replace('/(\b[a-z])/i', '\1', $text);
// Display the modified text with styled first letters
echo $text;
?>
Sample Output:
PHP Tutorial
View the output in the browser
Explanation:
Here's a brief explanation of the above exercise:
- $text = 'PHP Tutorial';
- Defines a text string with the content "PHP Tutorial."
- $text = preg_replace('/(\b[a-z])/i', '<span style="color:red;">\1</span>', $text);
- Uses a regular expression (/(\b[a-z])/i) with preg_replace() to replace the first letter of each word in the text with a <span> element having red color style. The regular expression looks for word boundaries (\b) followed by any lowercase letter ([a-z]). The 'i' modifier makes the matching case-insensitive.
- echo $text;
- Displays the modified text, where the first letter of each word has been replaced with a styled <span> element in red color.
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:
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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'.
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