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PHP编程:第4版
book

PHP编程:第4版

by Kevin Tatroe, Peter MacIntyre
January 2021
Intermediate to advanced
505 pages
9h 45m
Chinese
Publishing House of Electronics Industry
Content preview from PHP编程:第4版
编码和转义
95
http://localhost/Programming%20PHP
函数
rawurldecode()
用于解码被编码过的
URL
字符串
$encoded = 'Programming%20PHP';
echo rawurldecode($encoded);
Programming PHP
查询字符串编码
urlencode()
urldecode()
函数与它们原始的版本(即
rawurlencode()
rawurldecode()
的不同仅在于它们把空格编码为加号(
+
),而不是
%20
。这是创建查询字符串
(query
string)
cookie
值的格式。这些函数也可以为
HTML
页面提供表单的网址,但是因为
这些值在通过表单或
cookie
传送时会自动解码,所以不需要使用这些函数来处理当前页
的查询字符串或
cookie
。这两个函数对于生成查询字符串是很有用的
$baseUrl = 'http://www.google.com/q=';
$query = 'PHP sessions -cookies';
$url = $baseUrl . urlencode($query);
echo $url;
http://www.google.com/q=PHP+sessions+-cookies
SQL
绝大多数数据库都要求对
SQL
查询字符串进行转义。
SQL
的转义方法相当简单——在
单引号、双引号、空字符和反斜杠前面加一个反斜杠(
\
)。
addslashes()
函数可添加这
些反斜杠,
stripslashes() ...
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Publisher Resources

ISBN: 9787121404634