The previous article introduced you to "How to use PHP while loop? (With detailed explanation) ", this article continues to introduce PHP form processing to you. It has certain reference value. Friends in need can refer to it. I hope it can solve your problems in processing forms!
#When processing HTML forms, PHP can automatically make form elements from the HTML page available to PHP scripts.
The $_GET
and $_POST
variables in PHP are used to retrieve information in the form, such as user input.
We complete the form processing by using HTML PHP
:
First we write a form form:
form.html The file code is as follows:
<html> <head> <meta charset="utf-8"> <title>古诗词研讨会</title> </head> <body> <form action="1.php" method="post"> 作者: <input type="text" name="fname"> 名句: <input type="text" name="age"> <input type="submit" value="提交"> </form> </body> </html>
The code execution result is as follows:
When the user fills out the above form and clicks the submit button, the form data will be sent Go to the PHP file named "1.php"
;
Secondly, we edit the code of 1.php as follows:
纳兰<?php echo $_POST["fname"]; ?>!<br> 代表名句是<?php echo $_POST["pome"]; ?>
Code The execution results are as follows:
PHP Gets the data of the drop-down menu
checkbox Checkbox.
What is CheckBox: The CheckBox control is what we generally call a check box, which is usually used to turn on or off an option. This control is found within the Settings dialog box of most applications. What we see that can be checked is the CheckBox
PHP checkbox. The checkbox can select multiple values.
The specific code is as follows:
<?php$q = isset($_POST['q'])? $_POST['q'] : '';if(is_array($q)) { $sites = array( foreach($q as $val) { // PHP_EOL 为常量,用于换行 echo $sites[$val] . PHP_EOL; } } else { ?> <form action="" method="post"> <input type="checkbox" name="q[]" value="人生若只如初见"> 人生若只如初见<br> <input type="checkbox" name="q[]" value="何事秋风悲画扇"> 何事秋风悲画扇<br> <input type="checkbox" name="q[]" value="等闲变却故人心"> 等闲变却故人心<br> <input type="checkbox" name="q[]" value="却道故人心易变"> 却道故人心易变<br> <input type="submit" value="提交"> </form> <?php}?>
The code execution results are as follows:
Recommended learning: "PHP Video tutorial》
The above is the detailed content of How to handle PHP forms? If it were you, how would you handle it?. 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。

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。

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。

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。


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