What are the differences between ECHO and print explain with example?
print is also a statement, used as an alternative to echo at many times to display the output. print can be used with or without parentheses. print always returns an integer value, which is 1. Using print, we cannot pass multiple arguments.
What is difference between ECHO and return in PHP?
Echo allows you to send a value to the browser, for display to the user. Return allows you to end a function, as well as pass off a value to another function or variable.
What is difference between Print_r and print in PHP?
The print and echo are both language constructs to display strings. The echo has a void return type, whereas print has a return value of 1 so it can be used in expressions. The print_r is used to display human-readable information about a variable.
What is the difference between printf and echo?
Printf provides for the creation of a formatting string and offers a non-zero quit status when it fails. Whereas echo normally leaves with a 0 status and typically outputs inputs headed by the end of line character upon this standard result. The “printf” gives you more options for the output format than the “echo”.
What is the use of return in PHP?
The return keyword ends a function and, optionally, uses the result of an expression as the return value of the function. If return is used outside of a function, it stops PHP code in the file from running.
What is difference between and $$ in PHP?
PHP $ and $$ Variables. The $var (single dollar) is a normal variable with the name var that stores any value like string, integer, float, etc. The $$var (double dollar) is a reference variable that stores the value of the $variable inside it. To understand the difference better, let’s see some examples.
What is the main difference between echo and Var_dump in PHP?
PHP
| var_dump() | print_r() |
|---|---|
| var_dump() displays values along with data types as output. | print_r() displays only value as output. |
| It does not have any return type. | It will return a value that is in string format. |
| The data returned by this function is difficult to understand. | The data returned by this function is human-readable. |
What is printf in PHP?
The printf() function outputs a formatted string. The arg1, arg2, ++ parameters will be inserted at percent (%) signs in the main string. This function works “step-by-step”.