函数在PHP中上载图像

我试图创建一个功能，上传图像，并将其移动到一个特定的位置，但没有工作，我无法找到问题

这是我的功能：

function actualizar_imagen($imagen_cargada){
    if($_FILES[$imagen_cargada]['name'] != ""){
        $fecha=date("Y_m_d_H_i_s_");
        $imagen_final = $fecha . $_FILES[$imagen_cargada]['name'];
        move_uploaded_file($_FILES[$imagen_cargada]['tmp_name'], '../publico/img/' . $imagen_final);
    }
    return $imagen_final;
}

actualizar_imagen('poster_grande');
actualizar_imagen("poster_pequeño");
actualizar_imagen("screenshot1");
actualizar_imagen("screenshot2");
actualizar_imagen("screenshot3");
actualizar_imagen("screenshot4");
actualizar_imagen("screenshot5");
actualizar_imagen("screenshot6");
actualizar_imagen("screenshot7");
actualizar_imagen("screenshot8");   

这是函数应该替换的代码，它实际上可以工作：

if($_FILES['poster_grande']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $poster_grande = $fecha.$_FILES['poster_grande']['name'];
    move_uploaded_file($_FILES['poster_grande']['tmp_name'],'../publico/img/' . $poster_grande);
}
if($_FILES['poster_pequeño']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $poster_pequeño = $fecha.$_FILES['poster_pequeño']['name'];
    move_uploaded_file($_FILES['poster_pequeño']['tmp_name'],'../publico/img/' . $poster_pequeño);
}
if($_FILES['screenshot1']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $screenshot1 = $fecha.$_FILES['screenshot1']['name'];
    move_uploaded_file($_FILES['screenshot1']['tmp_name'],'../publico/img/' . $screenshot1);
}
if($_FILES['screenshot2']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $screenshot2 = $fecha.$_FILES['screenshot2']['name'];
    move_uploaded_file($_FILES['screenshot2']['tmp_name'],'../publico/img/' . $screenshot2);
}
if($_FILES['screenshot3']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $screenshot3 = $fecha.$_FILES['screenshot3']['name'];
    move_uploaded_file($_FILES['screenshot3']['tmp_name'],'../publico/img/' . $screenshot3);
}
if($_FILES['screenshot4']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $screenshot4 = $fecha.$_FILES['screenshot4']['name'];
    move_uploaded_file($_FILES['screenshot4']['tmp_name'],'../publico/img/' . $screenshot4);
}
if($_FILES['screenshot5']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $screenshot5 = $fecha.$_FILES['screenshot5']['name'];
    move_uploaded_file($_FILES['screenshot5']['tmp_name'],'../publico/img/' . $screenshot5);
}
if($_FILES['screenshot6']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $screenshot6 = $fecha.$_FILES['screenshot6']['name'];
    move_uploaded_file($_FILES['screenshot6']['tmp_name'],'../publico/img/' . $screenshot6);
}
if($_FILES['screenshot7']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $screenshot7 = $fecha.$_FILES['screenshot7']['name'];
    move_uploaded_file($_FILES['screenshot7']['tmp_name'],'../publico/img/' . $screenshot7);
}
if($_FILES['screenshot8']['name'] != ""){
    $fecha=date("Y_m_d_H_i_s_");
    $screenshot8 = $fecha.$_FILES['screenshot8']['name'];
    move_uploaded_file($_FILES['screenshot8']['tmp_name'],'../publico/img/' . $screenshot8);
}

---

我找不到错误。

提交图像后，是否在脚本中正确调用函数？ 我的意思是这样的：

<form method="post" action="uploadImages.php">
   <!-- other inputs here -->
   <input type="submit" value="click" name="submit">
</form>

在uploadImages.php脚本中：

<?php
function actualizar_imagen($imagen_cargada){
    if($_FILES[$imagen_cargada]['name'] != ""){
        $fecha=date("Y_m_d_H_i_s_");
        $imagen_final = $fecha . $_FILES[$imagen_cargada]['name'];
        move_uploaded_file($_FILES[$imagen_cargada]['tmp_name'], '../publico/img/' .  $imagen_final);
    }
    return $imagen_final;
}

//check to see if the form is submitted and call the function
if(isset($_POST['submit']))
{
   actualizar_imagen($imagen_cargada);
} 
?>

不工作

不是有用的错误描述。发生了什么或没有发生什么？你有什么错误吗？有什么错误信息吗？move_Upload_file（）的代码是什么…你的Realizar_imagen（）函数很奇怪<代码>$imagen_final如果名称为empty@Rafael

move\u upload\u file（）

是一个内置的PHP函数。请尝试

var\u dump（$\u FILES[$imagen\u cargada]）在函数内部，以确保填充变量。