Q:

How are echo and print different in PHP?

Possible Duplicate:
Reference: Comparing PHP's print and echo 

Is there any major and fundamental difference between these two functions in PHP?

A:

From:
http://web.archive.org/web/20090221144611/http://faqts.com/knowledge_base/view.phtml/aid/1/fid/40

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.  
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 XOR are lower.

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";

A:

They are: 

print only takes one parameter, while echo can have multiple parameters. 
print returns a value (1), so can be used as an expression. 
echo is slightly faster. 

A:

To add to the answers above, while print can only take one parameter, it will allow for concatenation of multiple values, ie:
$count = 5;

print "This is " . $count . " values in " . $count/5 . " parameter";

This is 5 values in 1 parameter                                                      

