的更新

仔细观察我原来的剧本后，我发现为什么它没有用。第二个IF语句（$ countMissing == 0）在FOR循环中，它为找到的文件生成空数组。将IF语句排除在循环之外就可以解决问题了。

工作版（只需很少的修改）：

// Array with required file names
$files = array('some_file', 'other_file', 'another_file');
// Count how many files is in the array
$count = count($files);
// Eampty array for catching missing files
$missingFiles = array();

for ($i=0; $i < $count; $i++) {
    // If filename is in the array and file exist in directory...
    if (in_array($files[$i], $files) && file_exists(LIBRARIES . $files[$i] . '.php')) {
        // ...update array value with full path to file
        $files[$i] = LIBRARIES . $files[$i] . '.php';
    } else {
        // Add missing file(s) to array
        $missingFiles[] = LIBRARIES . $files[$i] . '.php';      
    }
}

// Count errors
$countMissing = count($missingFiles);
// If there was no missing files...
if ($countMissing == 0) {
    foreach ($files as $file) {
        // ...include all files
        require_once ($file);
    }
} else {
    // ...otherwise show error message with names of missing files
    echo "File(s): " . implode(", ", $missingFiles) . " wasn't found.";
}

如果这个帖子没有被删除，我希望它能帮到某个人。

Answer 1

试试这个，防止循环内循环。

for ($i=0; $i < $count; $i++) {
    // If filename is in the array but file not exist in directory...
    if (in_array($files[$i], $files) && !file_exists(ROOT_DIR . $files[$i] . '.php')) {
        // ...add name of missing file to error array
        $errors[] = $files[$i];
    }
    else{

        require_once (ROOT_DIR . $file[$i] . '.php');

    }
  }

Answer 2

试试这个：

$files = array(
    'some_file', 
    'other_file', 
    'another_file',
);

// create full paths
$files = array_map(function ($file) {
    return ROOT_DIR . $file . '.php')
}, $files);

// find missing files
$missing = array_filter($files, function ($file) {
    return !file_exists($file);
});

if (0 === count($missing)) {
    array_walk($files, function ($file) {
        require_once $file;
   });
} else {
    array_walk($missing, function ($file) {
        echo "File: " . $file " wasn't found.";
    });
}

供参考，见：

Answer 3

localheinz和jp的代码可能没问题，但我不会编写类似的东西，因为它会使事情变得复杂。假设你不想要一个丢失文件的列表（这会略有不同），我会这样做：

$filesOK=true;
foreach($files as $file)
{
   $path = ROOT_DIR . $file . ".php";

   if(!file_exists($path )) 
   {
       $filesOK=false; // we have a MIA
       break;          // quit the loop, one failure is enough 
   }
}

if($filesOK)
   foreach($files as $file)
      require_once($file);
else
   echo "We have a problem";

对我来说，这一目了然更容易看到。更容易调试，CPU将以单向或另一方式执行相同的工作。执行速度可能差别不大 - 如果这一点很重要的话。

如果您需要缺失文件列表，则：

$filesOK=true;
foreach($files as $file)
{
   $path = ROOT_DIR . $file . ".php";

   if(!file_exists($path)) // assume each file is given with proper path
   {
       $filesOK=false; // we have a MIA
       $mia[]=$path;   // or $file if you just want the name
   }
}

if($filesOK)
   foreach($files as $file)
      require_once($file);
else
{
   if(is_array(@$mia))         // I always make sure foreach is protected
     foreach($mia as $badfile) // even if it seems obvious that its ok 
        echo "Missing in action: $badfile<br>";
}

PHP - 仅当目录

的更新

3 个答案: