Php trim () form verification is not empty

Last Update:2017-01-13 Source: Internet

Author: User

Tags php tutorial

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In the php Tutorial, trim () form verification is not a null instance. It should be an entry-level instance. It tells you how to use the trim function to delete spaces and determine whether the data submitted by the user is empty.

<Html>
<Body>
<Form method = "post" action = "formerrorcheck. php">
<H1> contact information <Table>

<Tr>
<Td> <B> nickname: </B> </td>
<Td> <input type = "text" name = "nickname"> </td>
</Tr>

<Tr>
<Td> title: </td>
<Td> <input type = "text" name = "title"> </td>
</Tr>

<Tr>
<Td> <B> first name: </B> </td>
<Td> <input type = "text" name = "firstname"> </td>
</Tr>

<Tr>
<Td> middle name: </td>
<Td> <input type = "text" name = "middlename"> </td>
</Tr>

<Tr>
<Td> <B> last name: </B> </td>
<Td> <input type = "text" name = "lastname"> </td>
</Tr>

<Tr>
<Td> <B> primary email: </B> </td>
<Td> <input type = "text" name = "email"> </td>
<Td width = "20"> & nbsp; </td>
<Td> secondary email: </td>
<Td> <input type = "text" name = "secondaryemail"> </td>
</Tr>

<Tr>
<Td> company name: </td>
<Td> <input type = "text" name = "companyname"> </td>
</Tr>

<Tr>
<Td> office address: </td>
<Td> <input type = "text" name = "officeaddres1"> </td>
<Td width = "20"> & nbsp; </td>
<Td> home address: </td>
<Td> <input type = "text" name = "homeaddress"> </td>
</Tr>

<Tr>
<Td> </td>
<Td> <input type = "text" name = "officeaddress2"> </td>
</Tr>

<Tr>
<Td> city: </td>
<Td> <input type = "text" name = "officecity"> </td>
<Td width = "20"> & nbsp; </td>
<Td> & nbsp; </td>
<Td> <input type = "text" name = "homecity"> </td>
</Tr>

<Tr>
<Td> state: </td>
<Td> <input type = "text" name = "officestate"> </td>
<Td width = "20"> & nbsp; </td>
<Td> & nbsp; </td>
<Td> <input type = "text" name = "homestate"> </td>
</Tr>

<Tr>
<Td> zip: </td>
<Td> <input type = "text" name = "officezip"> </td>
<Td width = "20"> & nbsp; </td>
<Td> & nbsp; </td>
<Td> <input type = "text" name = "homezip"> </td>
</Tr>

<Tr>
<Td> phone: </td>
<Td> <input type = "text" name = "officephone"> </td>
<Td width = "20"> & nbsp; </td>
<Td> & nbsp; </td>
<Td> <input type = "text" name = "homephone"> </td>
</Tr>

<Tr>
<Td> birthday: </td>
<Td> <input type = "text" name = "birthday"> </td>
</Tr>

<Tr>
<Td> spouse name: </td>
<Td> <input type = "text" name = "spousename"> </td>
<Td width = "20"> & nbsp; </td>
<Td> childrens 'names: </td>
<Td> <input type = "text" name = "children"> </td>
</Tr>

<Tr>
<Td> anniversary: </td>
<Td> <input type = "text" name = "anniversary"> </td>
</Tr>

</Table>

<Br>
<Br>
<Br>
<Input type = "submit" value = "submit">
<Br>
<Br>
<Input type = "reset" value = "clear the form">

</Form>
</Body>
</Html>

<! -- Formerrorcheck. php
<Html>
<Body>
<? Php

$ Errors = 0;
If (! Trim ($ nickname )){
Echo "<br> <B> nickname </B> is required .";
$ Errors ++;
}

If (! Trim ($ firstname )){
Echo "<br> <B> first name </B> is required .";
$ Errors ++;
}

If (! Trim ($ lastname )){
Echo "<br> <B> last name </B> is required .";
$ Errors ++;
}

If (! Trim ($ email )){
Echo "<br> <B> primary email address </B> is required .";
$ Errors ++;
}

If ($ errors> 0)
Echo "<br> please use your browser's back button ".
"To return to the form, and correct error (s )";

?>

</Body>
</Html>

This is a simple verification function.

<? Php
Function phone_validate ($ data, $ desc ){
$ Regex = "/^ ([2-9] [0-9] {2 }) [2-9] [0-9] {2}-[0-9] {4}/I ";
If (preg_match ($ regex, $ data )! = 1 ){
Return "the '$ desc' field isn' t valid! ";
}
Return true;
}
?>

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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