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What is echo and print?
“echo and print are more or less the same. They are both used to output data to the screen. The differences are small: echo has no return value while print has a return value of 1 so it can be used in expressions. echo can take multiple parameters (although such usage is rare) while print can take one argument.
What is the use of return in PHP?
return ¶ return returns program control to the calling module. Execution resumes at the expression following the called module’s invocation. If called from within a function, the return statement immediately ends execution of the current function, and returns its argument as the value of the function call.
How are Echo and print used in PHP?
With PHP, there are two basic ways to get output: echo and print. In this tutorial we use echo or print in almost every example. So, this chapter contains a little more info about those two output statements. echo and print are more or less the same. They are both used to output data to the screen.
Why do I get ” Echo is on ” when trying to print a variable?
When I am running it in XP, it is giving me expected output, but When I am running it in Vista or windows 7, I am getting “Echo is On” when trying to print (echo) value. G:\\2012>abc.bat 1 G:\\2012>echo 1 1 G:\\2012>set var = 1 G:\\2012>echo ECHO is on. G:\\2012> Get rid of the spaces in your set expression.
How to change the output color of Echo?
It may be more convenient to insert tput ‘s output directly into your echo strings using command substitution: echo “$ (tput setaf 1)Red text $ (tput setab 7)and white background$ (tput sgr 0)” The above command produces this on Ubuntu:
Which is the output of the ECHO command?
Use the –help argument to list all available echo command options: Note: Using the echo –help command returns –help as the output. The echo command uses the following options: -n: Displays the output while omitting the newline after it. -E: The default option, disables the interpretation of escape characters.