How to write Multi-Line Strings in PHP ?

Multi-Line Strings can be written in PHP using the following ways.

1. Using escape sequences: We can use the \n escape sequences to declare multiple lines in a string.

   PHP Code:

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   <?php       //declaring multiple lines using the new line escape sequence     $var="Geeks\nFor\nGeeks";     echo $var; ?>

   Output:

   Geeks
   For
   Geeks

2. Using concatenation assignment operator: We can use the concatenation assignment operator .= to concatenate two strings and the PHP_EOL to mark the end of the line.

   PHP Code:

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   <?php     $s1="Geeks". PHP_EOL;//PHP_EOL marks end of line so that     $s2="For". PHP_EOL;//next string get concatenated as new line     $s3="Geeks";     $s1.=$s2.=$s3;//concatenating the string into $s1     echo $s1;//printing final concatenated string ?>

   Output:

   Geeks
   For
   Geeks

3. Using Heredoc and Nowdoc Syntax: We can use the PHP Heredoc or the PHP Nowdoc syntax to write multiple-line string variables directly. The difference between heredoc and nowdoc is that heredoc uses double-quoted strings. Parsing is done inside a heredoc for escape sequences, etc whereas a nowdoc uses single-quoted strings, and hence parsing is not performed.

   Note: The delimiter in the heredoc and nowdoc syntaxes must always be at the beginning of a line without any spaces, characters, etc. 

   PHP Code: 

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   <?php     // code   //Heredoc variable   $s1=<<<EOD   Geeks   \tFor   Geeks EOD; echo $s1;   echo"\n";   //Nowdoc variable   $s2=<<<'EOT'   Geeks   \tFor   Geeks EOT; echo $s2 ?>

   Output:

    Geeks
         For
     Geeks
     Geeks
     \tFor
     Geeks

References: https://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.nowdoc, https://www.zambiatek.com/php-strings/