Τㄢ﹃笲衡才材琌硈絬笲衡才.ウㄤオ把计硈絬﹃材琌硈絬结笲衡才.=ウ盢娩把计オ娩把计癟ǎ结笲衡才
<?php$a = "Hello ";$b = $a . "World!"; // now $b contains "Hello World!"$a = "Hello ";$a .= "World!"; // now $a contains "Hello World!"?>
把ǎ﹃摸㎝﹃ㄧ计彻竊
