How can PHP developers include PHP code within a string variable, such as '<?php $id ?>'?

To include PHP code within a string variable in PHP, developers can use the concatenation operator (.) to combine the PHP code with the string. This allows the PHP code to be evaluated when the string is output. For example, to include '<?php $id ?>' within a string variable, you can concatenate it with the variable containing the PHP code. 

$id = 123;
$string = &#039;The ID is: &#039; . $id;
echo $string;

Keywords

PHP string variable code inclusion eval function dynamic content

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