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PHP MySQL Delete
PHP MySQL DeleteDELETE 语句用于从数据库表中删除行。删除数据库中的数据DELETE FROM 语句用于从数据库表中删除记录。语法DELETE FROM table_nameWHERE some_column = some_value注释:请注意 DELETE 语法中的 WHERE 子句。WHERE 子句规定了哪些记录需要删除。如果您想省去 WHERE 子句,所有的记录都会被删除!如需学习更多关于 SQL 的知识,请访问我们的 SQL 教程。为了让 PHP 执行上面的语句,我们必须使用 mysqli_query() 函数。该函数用于向 MySQL 连接发送查询或命令。实例请看下面的 "Persons" 表:FirstNameLastNameAgePeterGriffin35GlennQuagmire33下面的实例删除 "Persons" 表中所有 LastName='Griffin' 的记录:<?php$con=mysqli_connect("localhost","username","password","database");// 检测连接if (mysqli_connect_errno()){ echo "连接失败:
" . mysqli_connect_error();}mysqli_query($con,"DELETE FROM Persons WHERE LastName='Griffin'");mysqli_close($con);?>在这次删除后,"Persons" 表如下所示:FirstNameLastNameAgeGlennQuagmire33
" . mysqli_connect_error();}mysqli_query($con,"DELETE FROM Persons WHERE LastName='Griffin'");mysqli_close($con);?>在这次删除后,"Persons" 表如下所示:FirstNameLastNameAgeGlennQuagmire33
PHP MySQL Delete