1、(“.”)连接字符
2、(“.=”)连接并赋值
<?php
$a = "Hello ";
$b = $a . "World!"; // now $b contains "Hello World!"
$a = "Hello ";
$a .= "World!"; // now $a contains "Hello World!"
?>
php表示字符串即可用单引号也可用双引号,两者区别为:
当字符串中有变量时,单引号仅输出其变量名,而不是值
1、(“.”)连接字符
2、(“.=”)连接并赋值
<?php
$a = "Hello ";
$b = $a . "World!"; // now $b contains "Hello World!"
$a = "Hello ";
$a .= "World!"; // now $a contains "Hello World!"
?>
php表示字符串即可用单引号也可用双引号,两者区别为:
当字符串中有变量时,单引号仅输出其变量名,而不是值