[英]Validate id number in php
The form of html format as shown as below: html格式的格式如下图所示:
<tr style="height:15px;"><td></td></tr>
<tr>
<td>ID Card No<br /></td>
</tr>
<tr>
<td><input class="input" style="width:300" size="20" type="text" name="id" maxlength="5"/></td>
</tr>
How can an id number (eg A1234) be validated in PHP format? 如何以PHP格式验证ID号(例如A1234)?
Simply regex to accept one upper char and four digits
should be: 只需使用正则表达式即可接受one upper char and four digits
:
$str = 'A1234';
$result = preg_match('~^[A-Z]\d{4}$~', $str);
print_r($result); // true | false
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