欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  php教程

php 打印、显示、输出函数 收集

程序员文章站 2022-04-26 13:15:31
...
echo "Hello World";

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

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

echo
"Escaping characters is done "Like this"."
;

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

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

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

echo
"this is {$baz[value]} !";
// this is foo !

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

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

// Some people prefer passing multiple parameters to echo over concatenation.
echo This , string , was , made , with multiple parameters., chr(10
);
echo
This . string . was . made . with concatenation. . " "
;

echo
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!
END;

// Because echo does not behave like a function, the following code is invalid.
($some_var) ? echo true : echo false
;

// However, the following examples will work:
($some_var) ? print true : print false;
// print is also a construct, but
// it behaves like a function, so
// it may be used in this context.
echo $some_var ? true: false;
// changing the statement around
?>


====================
PHP die() 函数