What resources or tutorials can help PHP beginners understand regex patterns for word replacement?

To help PHP beginners understand regex patterns for word replacement, resources such as the official PHP documentation on regular expressions, online tutorials on regex patterns, and websites like regex101.com for testing and experimenting with regex patterns can be very useful. 

<?php
// Original string
$text = "Hello, World! This is a sample text.";

// Use preg_replace() function with regex pattern to replace "sample" with "example"
$new_text = preg_replace("/\bsample\b/", "example", $text);

// Output the modified text
echo $new_text;
?>

Keywords

PHP regex patterns word replacement tutorials resources

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