Heredoc in PHP: Delving into "<<<" Syntax
In PHP, "<<<", a triple left-angle bracket followed by a keyword of user choice, marks the beginning of a heredoc string, a multi-line string literal. It concludes with the same keyword on a new line, bringing the heredoc block to an end.
Heredoc offers a convenient way to define multi-line strings without the need for extensive escaping. It preserves newlines and whitespace within the string, making it ideal for scenarios like defining raw SQL queries or structured text.
For instance:
<code class="php">$sql = <<<MySQL_QUERY SELECT * FROM `users` WHERE `name` = "John Doe"; MySQL_QUERY;</code>
In this example, the heredoc defines a raw SQL query string stored in the $sql variable. Heredoc ensures it preserves the line breaks and white space in the query, making it human-readable and maintainable.
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