PHP帮助“if”语句动态包含文件

Question

I have these files:

"id_1_1.php", "id_1_2.php", "id_1_3.php" etc "id_2_1.php", "id_2_2.php", "id_2_3.php" etc

the number of files is not known because will always grow..

all the files are in same directory..

I want to make a if statement:

1. to include the files only if their name ends with "_1"
2. another function to load all the files that start with "id_1"

How can I do this? Thank you!

edit1: no the numbers will not be skipped, once I have another item for id_1_ collection of products I will add new ones as id_1_1, id_1_2 etc.. so no skipping..

Answer 1

// Each of these:
//   - scans the directory for all files
//   - checks each file
//   - for each file, does it match the pattern described
//   - if it does, expand the path
//   - include the file once

function includeFilesBeginningWith($dir, $str) {
    $files = scandir($dir);
    foreach ($files as $file) {
        if (strpos($file, $str) === 0) {
            $path = $dir . '/' . $file;
            include_once($path);
        }
    }
}

function includeFilesEndingWith($dir, $str) {
    $files = scandir($dir);
    foreach ($files as $file) {
        if (strpos(strrev($file), strrev($str)) === 0) {
            $path = $dir . '/' . $file;
            include_once($path);
        }
    }
}

/* To use: - the first parameter is ".",
   the current directory, you may want to
   change this */
includeFilesBeginningWith('.', 'id_1');
includeFilesEndingWith('.', '_1.php');