PHP has a built-n mail() function. mail() function in PHP takes three obligatory arguments and one optional. Obligatory arguments follow each other inside round brackets, are separated by a comma, and are placed in this order: where the message should be sent ($to), the subject of the message ($subject) and the body of the message […]

Here’s an example of using escape characters in PHP: ‘Here\’s an example of using escape characters in PHP: ‘; If you want to use \; or any other escape characters, you would have to use double-quoted strings:  “Here\’s another example of how to use escape characters in PHP\;”;

Single-quoted strings allow \’ and \\ escape characters. Any other escape characters must be used within double-quoted strings.

When PHP processes single quotes, it sees anything enclosed in these quotes as raw text. When PHP processes double quotes, it assumes that there are variables embedded inside the sentence. When PHP finds variables inside a double-quoted sentence, it simply inserts the value of the variable — this means that there is no need to […]

You can do that by applying double quote syntax and newline escape characters (\n)

Escape characters in PHP are a small collection of characters that help to escape things that a server may confuse with element of PHP language, such as single quotes, double quotes and newlines. Escape characters in PHP start with a backslash (\). For example, to place a newline  in the PHP code, you can use […]

Indent all lines of code following the first line, to make it clear which lines constitute a single PHP command. (Make sure to not break up the code in the middle of a variable.)

Yes you can. You should place them in single quotes.  For example, you can insert HTML tags like this <br /> tag into PHP statements: ech0 ‘This is an example of how HTML can be inserted into PHP’ . $a_php_variable . ‘<br />’;

echo command outputs the concatenated variables (or any other data) created dynamically by PHP script into HTML.  echo is the “door” between the worlds of PHP and HTML.

Yes. PHP automatically changes the data type of the numeric variable into string.