Question

我得到了ascript，它帮助我将一些数据添加到csv文件中，基于图像是否在文件夹内（退出与否）的事实。文件是图像，所以我需要检查文件是否存在，以及是否是png，jpg，jpeg，gif。

到目前为止它只检查它是否是JPG但我希望它找到文件存在，如果它是PNG或JPEG甚至GIF。

<?php
$columns = array("row1","row2","row3","row4","row5","row6","row7","row8","row9",
"row10","row11","row12","row13","row14","row15","row16","row17","row18"
);
$rootDir = "/path/to/images/folder/files";
$file = fopen("database.csv", "r") or die('fopen database failed');
$newFile = fopen("newdata.csv", "w") or die('fopen newdata.csv failed');
while (($data = fgetcsv($file, 999999, ";")) !== FALSE) {
    $row = array_combine($columns, $data);
    $filename = $row['row4'].".jpg"; // could be png or jpEg, or even gif
    if (file_exists("$rootDir/$filename")) {
        $row['image'] = .$filename; //also needs correct extension of image which exists.
        $row['small_image'] = .$filename;
        $row['thumbnail'] = .$filename; 
    }
    fputcsv($newFile, array_values($row), ";",'"' );
}
fclose($file);
fclose($newFile);
?>

Answer 1

您可以这样做：

<击>

// your code

$possible_extensions = array("jpg", "jpeg", "png", "gif");
$row = array_combine($columns, $data);
foreach($possible_extensions as $ext){
    $filename = $row['row4'] . "." . $ext;
    if (file_exists("$rootDir/$filename")) {
        $row['image'] = .$filename;
        $row['small_image'] = .$filename;
        $row['thumbnail'] = .$filename; 
        break;
    }
}
fputcsv($newFile, array_values($row), ";",'"' );

// your code

<击>

<强>编辑：

如果您想执行不区分大小写的file_exists()检查，那么这就是解决方案，

以下fileExists()函数返回完整路径文件（如果找到），false（如果没有）。

function fileExists($fileName, $caseSensitive = true) {

    if(file_exists($fileName)) {
        return $fileName;
    }
    if($caseSensitive) return false;

    // Handle case insensitive requests            
    $directoryName = dirname($fileName);
    $fileArray = glob($directoryName . '/*', GLOB_NOSORT);
    $fileNameLowerCase = strtolower($fileName);
    foreach($fileArray as $file) {
        if(strtolower($file) == $fileNameLowerCase) {
            return $file;
        }
    }
    return false;
}

这是来源：

PHP Case Insensitive Version of file_exists()

现在你的代码，

// your code

$possible_extensions = array("jpg", "jpeg", "png", "gif");
$row = array_combine($columns, $data);
foreach($possible_extensions as $ext){
    $filename = $row['row4'] . "." . $ext;
    if ($filename = fileExists("$rootDir/$filename", false)) {
        $row['image'] = .$filename; //also needs correct extension of image which exists.
        $row['small_image'] = .$filename;
        $row['thumbnail'] = .$filename; 
        break;
    }
}
fputcsv($newFile, array_values($row), ";",'"' );

// your code

检查文件（可能的多个扩展名）是否存在？

1 个答案: