This article mainly introduces the commonly used URL processing functions in PHP. The examples summarize some of the more commonly used URL processing functions such as parse_url, rawurldecode, urlencode, urldecode, etc. It is of great practical value. Friends who need it can For reference,
The example in this article summarizes several url encoding parsing functions in PHP, such as parse_url, rawurldecode, rawurlencode, urldecode, and urlencode. Share them with everyone for your reference. The specific usage is as follows:
Let’s look at the introduction and examples: parse_url($str url);
Convert the url into an array:print_r (parse_url("www.jb51.net")); Parse the url and output the return array, the url special formatStringrestores to a normal string.
Syntax:string rawurldecode(string str);
Return value: string
Function type: encoding processing
Content description: This function decodes the string from the characters of the url The string special format is decoded into an ordinary string. For detailed encoding and decoding information and specification documents, please refer to rfc 1738. The code is as follows:
The code is as follows:
echo rawurldecode('foo%20bar%40baz'); //输出foo bar@baz string rawurlencode ( string str )
Returns a string, this character All non-alphanumeric characters in the string except -_. will be replaced with a percent sign (%) followed by two hexadecimal digits. This is the encoding described in rfc 1738 to protect literal characters. To avoid it being interpreted as a special URL delimiter, and to protect the URL format from being messed up by transmission media, like some mail systems, using character conversion, for example, if you want to include a password in an FTP URL:
The code is as follows:
$str="http://www.jb51.net"; //定义字符串 $result=rawurlencode($str); //对指定字符串编码 echo $result; /* urldecode() url解码 */ //输出结果 $str="http%3a%2f%2fwww.jb51.net"; $result=urldecode($str); echo $result; /* urlencode() url编码 */ $str="http://www.jb51.net"; //定义字符串 $result=urlencode($str); //对指定字符串编码 echo $result; //输出结果
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php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。


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