Php checkbox value acquisition, display, multiple values acquisition

Last Update:2017-01-13 Source: Internet

Author: User

Tags php tutorial valid

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In the php Tutorial, the checkbox value is obtained and displayed. Multiple values are obtained.

Simplest checkbox value code

<Html>
<Head>
<Title> checkbox demo </title>
</Head>
<Body>
<H1> checkbox demo

<H3> demonstrates checkboxes <Form action = "handleformcheckbox. php">

<Ul>
<Li> <input type = "checkbox" name = "chkfries" value = "11.00"> fries </li>
<Li> <input type = "checkbox" name = "chksoda" value = "12.85"> soda </li>
<Li> <input type = "checkbox" name = "chkshake" value = "1.30"> shake </li>
<Li> <input type = "checkbox" name = "chkketchup" value = ". 05"> ketchup </li>
</Ul>
<Input type = "submit">
</Form>

</Body>
</Html>

<! -- Handleformcheckbox. php
<Html>
<Head>
<Title> checkbox demo </title>
</Head>
<Body>
<H3> demonstrates reading checkboxes <?
Print Chkfries: $ chkfries <br>
Chksoda: $ chksoda <br>
Chkshake: $ chkshake <br>
Chkketchup: $ chkketchup <br>
<Hr>

Here;

$ Total = 0;

If (! Empty ($ chkfries )){
Print ("you chose fries <br> ");
$ Total = $ total + $ chkfries;
}

If (! Empty ($ chksoda )){
Print ("you chose soda <br> ");
$ Total = $ total + $ chksoda;
}

If (! Empty ($ chkshake )){
Print ("you chose shake <br> ");
$ Total = $ total + $ chkshake;
}

If (! Empty ($ chkketchup )){
Print ("you chose ketchup <br> ");
$ Total = $ total + $ chkketchup;
}

Print "the total cost is $ total ";

?>
</Body>
</Html>
-->

Instance

<Html>
<Head>
<Title> using default checkbox values </title>
</Head>
<Body>
<? Php
$ Food = $ _ get [food];
$ Self = htmlentities ($ _ server ['php _ self ']);
If (! Empty ($ food )){
Echo "the foods selected are: <br/> ";
Foreach ($ food as $ foodstuf)
{
Echo "<strong>". htmlentities ($ foodstuf). "</strong> <br/> ";
}
}
Else
{
Echo ("<form action =" $ self "");
Echo ('method = "get">
<Fieldset>
<Label> italian <input type = "checkbox" name = "food []" value = "italian"/>
</Label>
<Label> mexican <input type = "checkbox" name = "food []" value = "mexican"/>
</Label>
<Label> chinese <input type = "checkbox" name = "food []" value = "chinese"
Checked = "checked"/> </label>
</Fieldset>
<Input type = "submit" value = "go! "> ');
}
?>
</Body>
</Html>

Multiple choice checkbox

<? Php
$ Options = array ('option 1', 'option 2', 'option 3 ');

$ Valid = true;
If (is_array ($ _ get ['input']) {
$ Valid = true;
Foreach ($ _ get ['input'] as $ input ){
If (! In_array ($ input, $ options )){
$ Valid = false;
        }
    }
If ($ valid ){
// Process input
    }
}
?>

Instance checkbox multi-value acquisition

<Html>
<Head>
<Title> using default checkbox values </title>
</Head>
<Body>
<? Php
$ Food = $ _ get ["food"];
If (! Empty ($ food )){
Echo "the foods selected are: <strong> ";
Foreach ($ food as $ foodstuff ){
Echo '<br/> '.html entities ($ foodstuff );
}
Echo "</strong> .";
}
Else {
Echo ('
<Form action = "'. htmlentities ($ _ server [" php_self "]).'" method = "get">
<Fieldset>
<Label>
Italian
<Input type = "checkbox" name = "food []" value = "italian"/>
</Label>
<Label>
Mexican
<Input type = "checkbox" name = "food []" value = "mexican"/>
</Label>
<Label>
Chinese
<Input type = "checkbox" name = "food []" value = "chinese" checked = "checked"/>
</Label>
</Fieldset>
<Input type = "submit" value = "go! "/>
</Form> ');
}
?>
</Body>
</Html>

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.

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