PHP Form Submission example explanation, PHP form Instance explanation _php tutorial

PHP Form Submission example explanation, PHP form instance explanation

This article for you to share a very simple PHP form submission instance, the specific implementation steps are as follows:

The instance code is as follows:

The form includes common form elements: a single-line text box, a multiline text box, a single option (radio), a Multiple-choice (checkbox), and a multiple-selection menu.

The following is a detailed description:

maxlength is a property associated with a password text box that restricts the maximum length of a user's input password to 10 characters.

The Age list box is a list menu that has its own values under its named properties. Selected is a specific property selection element, and if an option is attached to that property, it is displayed as the first item when it is displayed.

Intro the contents of the text box , displays the text, row, and column widths by rows and cols.

Fave_sport is a group of radio buttons (radio), we want to name the element by group, such as this group of radio buttons are called Fave_sport, the user can only select one, the sending script side only has a value.

As with the single option, all multi-option members must have properties with the same name, and attribute names need to be added in parentheses [], so that the value of the multi-option is sent as an array to php,languages.

The checked tag is a single option and a value in multiple options, which is already selected by default.

The display of the form above

Because the form form in the HTML above uses the Post method to pass the data, the data submitted by the user is saved to the Super Global array of $_post or $_request, and we can process the submitted data based on the values in the $_post array.

The data in the above form is submitted to the someform.php script, which has the following processing logic:

By judging whether the button's variable name is defined in $_post, if there is a representation that the form has been submitted if (Isset ($_post["Btn_submit"])) {if (Emptyempty ($_post[' username ')) {echo " You did not enter the user name "; Exit (0); } if (Emptyempty ($_post[' password ')) {echo "You did not enter the password:"; Exit (0); } echo "Your username:". $_post[' user_name '). " "; echo "Your password (clear text):". $_post[' password '). " "; echo "Your Age:". $_post[' ages ']. " "; if (!emptyempty ($_post[' languages ')) {echo "The language you have selected is:";/////Handle the array of the user-selected interest checkbox button generated by foreach ($_post[' languages '] as $ Lang) {echo $lang. "";}} else {echo "You did not enter any hobbies";} if (!emptyempty ($_post[' develop_ide ')) {echo "You use the development tool as:";//Handle the array of the user's multiple-choice development Tools menu. foreach ($_p ost[' Develop_ide '] as $ide) {echo $ide. " "; } } else {echo "You did not select the development tool";} echo "Your self-Introduction:". NL2BR ($_post[' intro '). "
";//nl2br (), insert the HTML line break before each new line (n) in the string (
) "; echo "page hidden value (passed by hidden Tag value):". $_post[' from ']. " "; } ? >

The above is for everyone to share the PHP form submission example, to help you better learn PHP form submission, I hope everyone has a harvest.

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