ftp_delete()函数是PHP中的内置函数, 用于删除FTP服务器上的文件。
语法如下：
ftp_delete( $ftp_connection, $file )参数：此函数接受上述和以下所述的两个参数：
- $ftp_connection：它是必填参数。它指定用于执行FTP命令或功能的现有FTP连接。
- $file：它是必填参数。它指定要删除的服务器的文件路径。
返回值：成功返回TRUE, 失败返回FALSE。
注意：
- 此功能可用于PHP 4.0.0和更高版本。
- 以下示例无法在在线IDE上运行。因此, 请尝试使用适当的ftp服务器名称, 用户名和密码在某些PHP托管服务器或localhost中运行。
- ★★★确保作为参数删除提供的文件存在并且具有登录ftp连接的ftp用户的删除权限, 否则会产生错误。
例子：
<?php
//Connect to FTP server
//Assign ftp server to the variable
$ftp_server = "localhost" ;
//Use correct ftp username
$ftp_username = "user" ;
//Use correct ftp password corresponding
//to the ftp username
$ftp_userpass = "user" ;
//Filename or filename with path to specify
//the file on server to be deleted
$file = "test.txt" ;
//Establishing ftp connection
$ftp_connection = ftp_connect( $ftp_server )
or die ( "Could not connect to $ftp_server" );
if ( $ftp_connection ) {
echo "successfully connected to the ftp server!" ;
//Logging in to established connection with
//ftp username and password
$login = ftp_login( $ftp_connection , $ftp_username , $ftp_userpass );
if ( $login ) {
//Checking whether logged in successfully or not
echo "<br>logged in successfully!" ;
//ftp_delete() function to delete file from FTP server
if (ftp_delete( $ftp_connection , $file )) {
echo "<br>deletion of " . $file . " is successful." ;
}
else {
echo "<br>Error while deleting the file " . $file ;
}
}
else {
echo "<br>login failed!" ;
}
//Closeing connection
if (ftp_close( $ftp_connection )) {
echo "<br>Connection closed Successfully!" ;
}
}
?>输出如下：
successfully connected to the ftp server!
logged in successfully!
deletion of ./htdocs/test.txt is successful.
Connection closed Successfully!如果该文件被删除并再次运行同一程序, 但前提是该文件不存在(已删除), 因此会发生错误。输出看起来像
successfully connected to the ftp server!
logged in successfully!
Error while deleting the file ./htdocs/test.txt
Connection closed Successfully!参考： https://www.php.net/manual/en/function.ftp-delete.php
