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Php uses forms to implement some simple functions.

Source: Internet
Author: User
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Example 1 (POST submission form ): Copy codeThe Code is as follows: <Head>
<Title>
Chunkify Form
</Title>
</Head>
<Body>
<Form action = "chunkify. php" method = "POST">
Enter a word:
<Input type = "text" name = "word"/> <br/>
How long shocould be the chunks be?
<Input type = "text" name = "number"/> <br/>
<Input type = "submit" value = "Chunkify">
</Form>
</Body>
</Html> Copy codeThe Code is as follows: <Head>
<Title>
Chunkify Word
</Title>
</Head>
<? Php
$ Word = $ _ POST ['word'];
$ Number = $ _ POST ['number'];
$ Chunks = ceil (strlen ($ word)/$ number );
Echo "The $ number-letter chunks of '$ word' are: <br/> \ n ";
For ($ I = 0; $ I <$ chunks; $ I ++ ){
$ Chunk = substr ($ word, $ I * $ number, $ number );
Printf ("% d: % s <br/> \ n", $ I + 1, $ chunk );
}
?>
</Body>
</Html>

Html page.

Page processed by php after the form is submitted. In this example, I enter a word, and then give it a length, and divide the word into blocks of that length.

The POST method is used to submit a form.
Example 2 (single choice, GET accept Form ):Copy codeThe Code is as follows: <form action = "<? Php echo $ _ SERVER ['php _ SELF ']?> "Method =" GET ">
Select your personality attributes: <br/>
<Select name = "att []">
<Option value = "perky"> perky </option>
<Option value = "morese"> morose </option>
<Option value = "thinking"> thinking </option>
<Option value = "feeling"> feeling </option>
<Option value = "thrity"> speed-thrift </option>
<Option value = "prodigal"> shopper </option>
</Select>
<Br>
<Input type = "submit" name = "s" value = "Record my personality">
</Form>

<? Php
If (array_key_exists ('s ', $ _ GET )){
$ Des = implode ('', $ _ GET ['att ']);
Echo "You have a $ des personality .";
}
?>


Example 3 (multiple options, GET accept Form ):

Note that the <select name = "att []" multiple> underline tells GET that you are transmitting an array, and the black part indicates that the selection box is changed to multiple selection boxes.Copy codeThe Code is as follows: <form action = "<? Php echo $ _ SERVER ['php _ SELF ']?> "Method =" GET ">
Select your personality attributes: <br/>
<Select name = "att []" multiple>
<Option value = "perky"> perky </option>
<Option value = "morese"> morose </option>
<Option value = "thinking"> thinking </option>
<Option value = "feeling"> feeling </option>
<Option value = "thrity"> speed-thrift </option>
<Option value = "prodigal"> shopper </option>
</Select>
<Br>
<Input type = "submit" name = "s" value = "Record my personality">
</Form>

<? Php
If (array_key_exists ('s ', $ _ GET )){
$ Des = implode ('', $ _ GET ['att ']);
Echo "You have a $ des personality .";
}
?>


Example 4 (check box checkbox): the same name = "att []" indicates that GET transmits an array, and checked indicates that this option is the initial default option. In the same example, you can also add selected = "selected" to the tag.

Select multiple options by default.Copy codeThe Code is as follows: <form action = "<? Php echo $ _ SERVER ['php _ SELF ']?> "Method =" GET ">
Select your personality attributes: <br/>
Perky <input type = "checkbox" name = "att []" value = "perky" checked/> <br/>
Morose <input type = "checkbox" name = "att []" value = "morose" checked/> <br/>
Thinking <input type = "checkbox" name = "att []" value = "thinking"/> <br/>
Feeling <input type = "checkbox" name = "att []" value = "feeling"/> <br/>
<Br>
<Input type = "submit" name = "s" value = "Record my personality">
</Form>

<? Php
If (array_key_exists ('s ', $ _ GET )){
Echo "<pre> ";
Print_r ($ _ GET );
Echo "</pre> ";
If (is_null ($ _ GET ['att ']) exit;

$ Des = implode ('', $ _ GET ['att ']);
Echo "You have a $ des personality .";
}
?>


Example 5 (single answer): Note that the same option must have the same nameCopy codeThe Code is as follows: <form>
Male:
<Input type = "radio" checked = "checked" name = "Sex" value = "male"/>
<Br/>
Female:
<Input type = "radio" name = "Sex" value = "female"/>
<Br>
<Hr>
Male:
<Input type = "radio" checked = "checked" name = "Se" value = "male"/>
<Br/>
Female:
<Input type = "radio" name = "Se" value = "female"/>
</Form>
<P> when a user clicks a single-choice button, the button changes to the selected status, and all other buttons change to the unselected status. </P>


Example 6 (stick form)Copy codeThe Code is as follows: <? Php
$ F = $ _ POST ['fa '];

?>

<Form action = "<? Php echo $ _ SERVER ['php _ SELF '];?> "Method =" POST ">
Temperature:
<Input type = "text" name = "fa" value = "<? Php echo $ f;?> "/>;
<Br/>
<Input type = "submit" name = "Convert to Celsius"/>
</Form>
<? Php
If (! Is_null ($ f )){
$ C = ($ f-32) * 5/9;
Printf ("%. 2lf is %. 2lfC", $ f, $ c );
}
?>

Are some simple form processing ~

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This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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