使用 html 5 模式的名字验证
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First name validation using html 5 pattern
提问by Raj
I have this code
我有这个代码
echo '<input type="text" maxlength="32" name="first_name" pattern="[A-Za-z]" value="'.$_SESSION['user_first_name'].'" required>';
Even if I put something correct it says 'PLease match the requested format'
即使我输入正确，它也会显示“请匹配请求的格式”
The data is 'testme' which is correct but it's not passing the validation.
数据是“testme”，这是正确的，但没有通过验证。
回答by user2687506
You need to specify how long the pattern should be. pattern="[A-Za-z]{1,32}"
您需要指定模式的长度。 pattern="[A-Za-z]{1,32}"
echo '<input type="text" maxlength="32" name="first_name" pattern="[A-Za-z]{1,32}" value="'.$_SESSION['user_first_name'].'" required>';
回答by Vinoth
pattern="[A-Za-z ]{1,32}"<- Use space in the first name pattern.
pattern="[A-Za-z ]{1,32}"<- 在名字模式中使用空格。
回答by Anuxxule
For the data 'testme' (it has 6 characters)
对于数据“testme”（它有 6 个字符）
echo '<input type="text" maxlength="32" name="first_name" pattern="[A-Za-z]{6}" value="'.$_SESSION['user_first_name'].'" required>';
echo '<input type="text" maxlength="32" name="first_name" pattern="[A-Za-z]{6}" value="'.$_SESSION['user_first_name'].'" required>';
or else you can give a pattern with a range
否则你可以给出一个范围的模式
echo '<input type="text" maxlength="32" name="first_name" pattern="[A-Za-z]{1,255}" value="'.$_SESSION['user_first_name'].'" required>';
echo '<input type="text" maxlength="32" name="first_name" pattern="[A-Za-z]{1,255}" value="'.$_SESSION['user_first_name'].'" required>';
in this case you can input 1 to 255 characters as input value
在这种情况下，您可以输入 1 到 255 个字符作为输入值
