What are potential pitfalls when trying to check for specific words on a webpage using PHP?

When trying to check for specific words on a webpage using PHP, one potential pitfall is not taking into account case sensitivity. If the search is case sensitive and the word on the webpage is in a different case than the one being searched for, it may not be detected. To solve this issue, you can convert both the search term and the webpage content to lowercase or uppercase before comparing them. 

<?php
// Sample webpage content
$content = "Lorem ipsum dolor sit amet, consectetur adipiscing elit.";

// Word to search for
$searchWord = "Lorem";

// Convert both the content and search word to lowercase for case-insensitive search
$content = strtolower($content);
$searchWord = strtolower($searchWord);

// Check if the search word is present in the content
if (strpos($content, $searchWord) !== false) {
    echo "Word found on the webpage!";
} else {
    echo "Word not found on the webpage.";
}
?>

Keywords

webpage PHP parsing string manipulation error handling

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