What is the Diff. Between echo() and Print() in PHP?

Answer Posted / rajesh kumar vishwakarma

echo() is not actually a function (it is a language
construct) so you are not required to use parentheses with
it. In fact, if you want to pass more than one parameter to
echo, you must not enclose the parameters within parentheses.

print() is not actually a real function (it is a language
construct) so you are not required to use parentheses with
its argument list.

1. Speed. There is a difference between the two, but
speed-wise it
should be irrelevant which one you use. echo is marginally
faster
since
it doesn't set a return value if you really want to get down
to the
nitty gritty.

2. Expression. print() behaves like a function in that you
can do:
$ret = print "Hello World"; And $ret will be 1. That means
that print
can be used as part of a more complex expression where echo
cannot. An
example from the PHP Manual:

$b ? print "true" : print "false";

print is also part of the precedence table which it needs to
be if it
is
to be used within a complex expression. It is just about at
the bottom
of the precedence list though. Only "," AND, OR and XOR are
lower.

3. Parameter(s). The grammar is: echo expression [,
expression[,
expression] ... ] But echo ( expression, expression ) is not
valid.
This would be valid: echo ("howdy"),("partner"); the same
as: echo
"howdy","partner"; (Putting the brackets in that simple
example
serves
no purpose since there is no operator precedence issue with
a single
term like that.)

So, echo without parentheses can take multiple parameters,
which get
concatenated:

echo "and a ", 1, 2, 3; // comma-separated without
parentheses
echo ("and a 123"); // just one parameter with
parentheses

print() can only take one parameter:

print ("and a 123");
print "and a 123";

Is This Answer Correct ?    9 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

If the variable $var1 is set to 10 and the $var2 is set to the character var1, what's the value of $$var2?

737


Which programming language does php resemble to?

766


Which is not a php magic constant?

779


How to create an array in php?

790


What are the string function in php?

736


How long is csrf token?

705


Is php a low level language?

718


What does echo mean in php?

784


Can I learn laravel without php?

766


What is session data?

731


Explain different sorting function in php?

811


What are the correct and the most two common way to start and finish a PHP block of code?

829


How do you put a space in html?

743


What is php artisan serve?

690


What is constructors and destructors?

716