PHP file search program code_PHP tutorial

File search is to use PHP to traverse the directory and then go to each file to obtain the file name for comparison. Then when the file we specify is found, the traversal will stop and the file name and address to be searched will be displayed.

Today I am going to make a function specifically for searching files. The searched files may be located in a certain directory. Find whether the directory exists in the directory. There seems to be no such search function among PHP functions.

File operations are indispensable in PHP, and the frequency of file usage is also very high. For example, our common directory management systems, guestbooks without databases, etc. all use file operations, and the files here refer to It is not only the operation of directories, but also the operation of specified files, such as txt files, etc.

The following is a function method specifically used for file search. file_search is the method name, followed by three parameters. $directory is the directory where the file to be searched is located, such as the "admin/" directory. $search is the file to be searched. Yes, $recursive is used to determine whether the search is successful. The default is enough. If other operations are needed, you can add the corresponding parameters later.

Example 1

The code is as follows

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代码如下

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function file_search($directory, $search, $recursive = TRUE) { $res = FALSE; $dir_handle = opendir($directory); while( FALSE !== ($file = readdir($dir_handle)) ) { if( $file == '.' || $file == '..' ) { continue; } if( is_dir("$directory$file") ) { if( $recursive ) { $res = file_search("$directory$file", $search); if( $res !== FALSE ) { return $res; } } } if( $file == $search ) { return "$directory$file"; } } return FALSE; } ?>

function file_search($directory, $search, $recursive = TRUE)
{
$res = FALSE;
$dir_handle = opendir($directory);
while( FALSE !== ($file = readdir($dir_handle)) )
{
if( $file == '.' || $file == '..' )
{
continue;
}
if( is_dir("$directory$file") )
{
if( $recursive )
{
$res = file_search("$directory$file", $search);
if( $res !== FALSE )
{
return $res;
}
}
}
if( $file == $search )
{
return "$directory$file";
}
}
return FALSE;
}
?>

Example 2

Example 3

The code is as follows

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/*File search function Usage: findfile (directory, whether to traverse subdirectories, whether to search for file contents, directories not to be searched); Ketle 2005-07-07 */ function findfile ($dir, $find_sub_dir=false, $find_content=false, $except_dir=false) {                     $d = dir($dir); While (false !== ($entry = $d->read())) { If($entry == "." || $entry == ".." || in_array ($entry, $except_dir))                                   continue; $file = $d->path."/".$entry; If ( is_dir ( $file) )                                                  { If ( $find_sub_dir )                                                                                                            findfile ($file, $find_sub_dir, $find_content, $except_dir) ;                                                                                                           }                                                                                              }else                                                  { If ( $find_content )                                                                                                            If ( strstr(file_get_contents($file),$find_content) )                                                                                                  echo $file." n";                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              echo $file." n";                                                                                                           }                                                                                                                                                                                               }            $d->close();   } //test: findfile ('..',true,'Furongjj',array('templates_c','admin','xixi')) ; ?>

Use php glob function to find files and traverse file directories

Function description: array glob ( string $pattern [, int $flags ] )

Function: Find the file path that matches the pattern and return an array containing the matching files (directories) (Note: The checked files must be from the server system and cannot be used for remote files)

Parameter description: The first parameter: matching mode; the second optional parameter:

•GLOB_MARK - Add a slash

to each returned item •GLOB_NOSORT - Return files in their original order of appearance in the directory (not sorted)

•GLOB_NOCHECK - Returns the pattern used to search if no files match
•GLOB_NOESCAPE - backslash unescaped metacharacter
•GLOB_BRACE - expands {a,b,c} to match 'a', 'b' or 'c'
•GLOB_ONLYDIR - Return only directory entries matching pattern

The code is as follows

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代码如下	复制代码
$file = glob('{,.}*', GLOB_BRACE); //匹配所有文件 $file1 = glob('*.php');  //匹配所有php文件 print_r($file1);

$file = glob('{,.}*', GLOB_BRACE); //Match all files

$file1 = glob('*.php'); //Match all php files

代码如下	复制代码
print_r(listDir('./')); //遍历当前目录 function listDir($dir){     $dir .= substr($dir, -1) == '/' ? '' : '/';     $dirInfo = array();     foreach (glob($dir.'*') as $v) {         $dirInfo[] = $v;         if(is_dir($v)){             $dirInfo = array_merge($dirInfo, listDir($v));         }     }     return $dirInfo; }

print_r($file1);

Example 4

The code is as follows

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print_r(listDir('./')); //Traverse the current directory function listDir($dir){ $dir .= substr($dir, -1) == '/' ? '' : '/'; $dirInfo = array(); foreach (glob($dir.'*') as $v) {           $dirInfo[] = $v;            if(is_dir($v)){                 $dirInfo = array_merge($dirInfo, listDir($v)); } } Return $dirInfo; } http://www.bkjia.com/PHPjc/632907.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632907.htmlTechArticleFile search is to use php to traverse the directory and then go to each file to get the file name for comparison, and then find the file we specified Stop traversing and display the file name and address to be searched...