This article uses a few simple examples to give you a detailed understanding of the two ways of transmitting data in PHP: get method and post method. Friends in need can refer to it.
1. Submit data through get method
For example: https://www.php.net?Parameter name=parameter Value & parameter name = parameter value
can be obtained through $_GET on the server side (the requested php file). The $_GET index value is the parameter name, and the data corresponding to the index is the parameter value. The data submitted through get method can be seen in the website search bar, and you can also fill in the data in the website search bar
2. Submit data through post method
For example, if the form is sent through post, it can be obtained through $_POST.
<body> <form method="POST"> 姓名:<input type="text" name="username" /> <br /> 性别:<input type="text" name="sex" /> <br /> <input type="submit" value="提交" /> </form> </body>
The data submitted through post method is invisible
##三.p The difference between ost and get
From a security perspective, the data submitted by get can be seen in the url bar, while post Submitted data is invisible, so post is safer.
In terms of submission principle, get submission means submitting parameters one by one, and post submission means all parameters are submitted together as a whole. In terms of the size of submitted data, get submission generally does not exceed 255 bytes, and the size of post submission depends on the server. In terms of flexibility, get is very flexible. As long as there is a page jump, parameters can be passed. Post is not flexible. Post submission requires the participation of a form. Recommended:php video tutorial php tutorial
The above is the detailed content of Detailed introduction to the two ways of transmitting data in PHP. For more information, please follow other related articles on the PHP Chinese website!

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。

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。

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。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

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。


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