downloads | documentation | faq | getting help | mailing lists | reporting bugs | sites | links | my 
search for in the  
Last updated: Mon, 16 Jul 2012


(PHP 3, PHP 4, PHP 5 )

print -- Output a string


int print ( string arg )

Outputs arg. Returns 1, always.

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

例子 1. print() examples

print("Hello World");

"print() also works without parentheses.";

"This spans
multiple lines. The newlines will be
output as well"

"This spans\nmultiple lines. The newlines will be\noutput as well.";

"escaping characters is done \"Like this\".";

// You can use variables inside of a print statement
$foo = "foobar";
$bar = "barbaz";

"foo is $foo"; // foo is foobar

// You can also use arrays
$bar = array("value" => "foo");

"this is {$bar['value']} !"; // this is foo !

// Using single quotes will print the variable name, not the value
print 'foo is $foo'; // foo is $foo

// If you are not using any other characters, you can just print variables
print $foo;          // foobar

print <<<END
This uses the "here document" syntax to output
multiple lines with
$variable interpolation. Note
that the here document terminator must appear on a
line with just a semicolon no extra whitespace!

For a short discussion about the differences between print() and echo(), see this FAQTs Knowledge Base Article:

注: 由于这是一个语言结构而非函数,因此它无法被“变量函数”调用。

See also echo(), printf(), and flush().

 Last updated: Mon, 16 Jul 2012
Copyright © 2001-2005 The PHP Group
All rights reserved.
This unofficial mirror is operated at:
Last updated: Thu Jul 7 19:13:47 2005 CST