您搜索了: hello world (英语 - 简体中文)

hello world
你好，世界！

hello world program
hello world

i.e. they both produce: hello world.
i.e. they both produce: hello world.

array ([1] = 2 [hello] = 2 [world] = 1)
array ([1] = 2 [hello] = 2 [world] = 1)

?php echo "hello world"; echo "this spans multiple lines.
瞰赽 1. echo() examples

php echo strrev( "hello world !"); / / outputs "!dlrow olleh "?
php echo strrev("hello world!"); // outputs "!dlrow olleh"?

?php print( "hello world"); print "print() also works without parentheses ."; print "this spans multiple lines.
=ד 1. print() examples

$a = "hello"; $b = $a. "world !"; / / now $b contains "hello world! "$a = "hello"; $a .= "world !"; / / now $a contains "hello world! "
$a = "hello "; $b = $a. "world!"; // now $b contains "hello world!" $a = "hello "; $a .= "world!"; // now $a contains "hello world!"