How can PHP developers efficiently extract and manipulate specific character sequences after a specified keyword in a text?

To efficiently extract and manipulate specific character sequences after a specified keyword in a text using PHP, you can use the strpos() function to find the position of the keyword in the text, and then use substr() function to extract the desired characters after that position. 

$text = "This is a sample text with a keyword. Extract this part.";
$keyword = "keyword";
$position = strpos($text, $keyword) + strlen($keyword);
$extracted_text = substr($text, $position);
echo $extracted_text;

Keywords

PHP string manipulation substr strpos regular expressions

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