Question

我正在努力：

上传图片
删除旧图片
修改数据库中新图片的文件名。

请注意，$foto的值位于lock.php，代表图片文件名。

lock.php：

$ses_sql=mysql_query("select user, name, email2, email, lname, sex, pic1 from miembros    where user='$user_check' ");
$row=mysql_fetch_array($ses_sql);
$login_session=$row['user'];
$foto=$row['pic1'];

这是我的代码changeprofilepic.php：

include('lock.php');

$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp);
$foto = $_FILES["file"]["name"];
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 2000000)
&& in_array($extension, $allowedExts)) {
if ($_FILES["file"]["error"] > 0) {
echo "C&oacute;digo de retorno: " . $_FILES["file"]["error"] . "<br>";
} else {
echo "<p align='center'><img src='fotoperfil/$foto' width='300'/></p>";  
echo "<b>Archivo:</b> " . $_FILES["file"]["name"] . "<br>";
echo "<b>Tipo de Imagen:</b> " . $_FILES["file"]["type"] . "<br>";
echo "<b>Tama&ntilde;o:</b> " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
if (file_exists("fotoperfil/" . $_FILES["file"]["name"])) {
  echo "<p style='color:red'><b>Error:</b> $foto ya existe! Por favor elija otro nombre de archivo.</p>";
  echo "<p align='center'><button class='bon' onclick='goBack()'>Ir atr&aacute;s</button><input type=button class='bon' onClick='location.href=\"mailto:info@example.org\"' value='Contactar al Administrador'></p>";
} else {

if(is_file($_SERVER['DOCUMENT_ROOT'] . "fotoperfil/$foto") && $foto != 'nopic.png')      {
   // remove the old file 
unlink($_SERVER['DOCUMENT_ROOT'] . "fotoperfil/$foto");
}
// move the new file *after* the unlink
move_uploaded_file($_FILES["file"]["tmp_name"],"fotoperfil/" . $_FILES["file"]["name"]);
// If I understand your comment: update the $foto value with new filename
$foto = $_FILES["file"]["name"];
mysql_query("UPDATE miembros SET pic1 = '$foto' WHERE user = '$login_session'");

问题是代码会删除我刚上传的相同图片。我的目标是删除旧图片。

Answer 1

您可以在移动新上传的文件之前删除旧文件。您还可以检查是否存在旧文件。

include('lock.php');
// If I got an old file AND still exists on FS
if(is_file($_SERVER['DOCUMENT_ROOT'] . "fotoperfil/$foto") && $foto != 'nopic.png') {
  // remove the old file 
  $elim = unlink($_SERVER['DOCUMENT_ROOT'] . "fotoperfil/$foto");
}
// move the new file *after* the unlink
move_uploaded_file($_FILES["file"]["tmp_name"],"fotoperfil/" . $_FILES["file"]["name"]);
// If I understand your comment: update the $foto value with new filename
$foto = $_FILES["file"]["name"];
mysql_query("UPDATE miembros SET pic1 = '$foto' WHERE user = '$login_session'");

删除和修改数据库的问题

1 个答案: