php校验表单检测字段是否为空的方法,校验字段
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2024-01-12 12:43:04
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php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:
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
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。