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发布时间:2015-12-29 作者:网络 阅读:226次

本文实例讲述了php校验表单检测字段是否为空的方法。分享给大家供大家参考。具体如下:

php校验表单,检测字段是否为空,当表单中有未填写的字段,则会显示错误信息。



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php后端代码,保存为: ErrorCheck.php



Nickname is required.";
   $errorcount++;
 }
 if (!trim($_POST['title'])) {
   echo "
Title is required."; $errorcount++; } if ($errors > 0) echo "

Please use your browser's back button " . "to return to the form, and correct error(s)"; ?>

trim()函数可以去除字符串中的前后空字符

" " (ASCII 32 (0×20)), an ordinary space.
"\t" (ASCII 9 (0×09)), a tab.
"\n" (ASCII 10 (0x0A)), a new line (line feed).
"\r" (ASCII 13 (0x0D)), a carriage return.
"\0″ (ASCII 0 (0×00)), the NUL-byte.
"\x0B" (ASCII 11 (0x0B)), a vertical tab.

希望本文所述对大家的php程序设计有所帮助。

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