How can the preg_replace() function in PHP be utilized effectively when working with multi-line text extraction using regular expressions?

When working with multi-line text extraction using regular expressions in PHP, the preg_replace() function can be utilized effectively to manipulate and extract specific content from the text. By using the appropriate regular expression pattern and replacement string, preg_replace() can help extract desired information from multi-line text efficiently. 

// Example of using preg_replace() to extract specific content from multi-line text
$text = "This is a multi-line text.
It contains various information that needs to be extracted.
Some important data is located within this text.";

// Extracting lines containing the word "important"
$pattern = '/.*important.*/';
$extracted_text = preg_replace($pattern, '$0', $text);

echo $extracted_text;

Keywords

preg_replace PHP multi-line text extraction regular expressions utilization

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