How can PHP functions like explode and strpos be utilized effectively to extract specific portions of text based on certain criteria?

To extract specific portions of text based on certain criteria using PHP functions like explode and strpos, you can first use strpos to find the position of the criteria within the text, and then use explode to extract the desired portion of text. By combining these functions, you can effectively parse and extract the information you need from a string.

$text = "This is a sample text to demonstrate the usage of PHP functions.";
$criteria = "sample";

// Find the position of the criteria within the text
$pos = strpos($text, $criteria);

if ($pos !== false) {
    // Extract the portion of text after the criteria
    $extracted_text = substr($text, $pos + strlen($criteria));
    echo $extracted_text;
} else {
    echo "Criteria not found in the text.";
}