时间:2021-07-01 10:21:17 帮助过:4人阅读
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。
php后端代码,保存为: ErrorCheck.php
<?php $errorcount=0; if (!trim($_POST['nickname'])) { echo "
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。
http://www.bkjia.com/PHPjc/970995.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/970995.htmlTechArticlephp校验表单检测字段是否为空的方法,校验字段 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:...