如何将变量名称及其值打印到浏览器？

Question

I have just started learning PHP, so please forgive me for asking a question like this.

I have a variable $myVar = "hello"; and I want to print out the name of the variable and its value to the browser.

I tried

echo "$myVar: $myVar"; //this simple prints out the value of $myVar twice

also tried

echo '$myVar'+ ":$myVar"; //somehow the number 0 was printed out to the browser

also tried

echo '$myVar: $myVar'; //this just prints out the string literal itself

I understand the difference between double quotes and single quotes, but just can't seem to get this simple example working.

Answer 1

You can simply do this:

echo "\$myVar: $myVar";

Use backslash \ to display the variable name as it is.