Web Reference: The string in PHP is implemented as an array of bytes and an integer indicating the length of the buffer. It has no information about how those bytes translate to characters, leaving that task to the programmer. When you place variables in a double-quoted string, PHP will expand the variable names. If a string contains the double quotes (“), you need to escape them using the backslash character(\). For example: Output: PHP heredoc strings behave like double-quoted strings, without the double-quotes. It means that they don’t need to escape quotes and expand... In PHP, the HEREDOC string declarations are really useful for outputting a block of html. You can have it parse in variables just by prefixing them with $, but for more complicated syntax (like $var [2] [3]), you have to put your expression inside {} braces.
YouTube Excerpt: In this video, we go over the basic
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