Understanding the PHP Heredoc Syntax: What does "
In PHP, the "
Starting a Heredoc String
To initiate a heredoc string, use the following syntax:
<p>where HEREDOC_TOKEN can be any word or phrase.</p><p><strong>Example:</strong></p><pre class="brush:php;toolbar:false">$sql = <p><strong>Ending a Heredoc String</strong></p><p>To terminate the heredoc string, simply place the HEREDOC_TOKEN on a new line, followed by nothing else:</p><pre class="brush:php;toolbar:false">HEREDOC_TOKEN
As an exception, you can optionally include a single semicolon after the end token.
Preserving Newlines and Content
The heredoc syntax allows you to create multiline strings with preserved newlines and other content. This can be useful for generating SQL queries, HTML templates, or other text-based outputs.
Example
The following code uses a heredoc string to generate an HTML header:
echo <title>My Website</title> <h1 id="Welcome-to-my-site">Welcome to my site!</h1>
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