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str_replaced函数的问题？
Jun 23, 2016 pm 01:26 PM
$bodytext = str_replace("%body%", "black", "<body text='%body%'>");var_dump($bodytext);echo str_replace("world","John","Hello world!");Copy after login
输出
为什么var_dump($bodytext)会输出string(19) ""；是那里错了？设置还是语法？
回复讨论(解决方案)
$bodytext = str_replace("%body%", "black", "<body text='%body%'>");var_dump($bodytext);Copy after login
你只看到 string(19) "" 的原因是：你用浏览器查看时， 被当做 html 标记解释了，所以看不见
谢谢
应该要用字符实体表示，输出的值为空，是浏览器把它当成一个html标签了:
$bodytext = str_replace("%body%", "black", "<body text='%body%'>");
var_dump($bodytext);
echo str_replace("world","John","Hello world!");
不知道您是不是指的这个？
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