CODEWITHSUNDEEP
php
Brian Bruman
Brian Bruman

Reputation: 913

Only Returning Filenames with Unique String in PHP

I'm getting xml files generated daily and renamed to a specific structure like as follows:

03-17-2017 02 05 09 PM - (20000) - Item 1.xml
03-17-2017 02 06 14 PM - (20001) - Item 2.xml
03-17-2017 02 06 19 PM - (20002) - Item 3.xml
03-17-2017 02 08 03 PM - (20003) - Item 4.xml
03-17-2017 02 08 53 PM - (20004) - Item 5.xml
03-17-2017 02 09 41 PM - (20002) - Item 3.xml

As you can see, I sometimes get duplicates, such as 20002, with a different timestamp.

Is there a way to programatically exclude this and only include unique numbers in my retrieval? The filename structure is always the same and the number is always a 6 digit number.

Right now I am using glob to return the files in the directory

$files = glob("03-17-2017/*.xml");

if (is_array($files)) {

foreach($files as $filename) {

//

}

Is there a function or method in being selective to only retrieve the filenames with a unique number?

Upvotes: 1

Views: 31

Answers (1)

RomanPerekhrest
RomanPerekhrest

Reputation: 92854

Two approaches to get the needed result:

-- using strpos and substr functions:

$files = [];
foreach (glob("03-17-2017/*.xml") as $f) {
    $start_pos = strpos($f, "(") + 1;
    $num = substr($f, $start_pos, strpos($f, ')') - $start_pos);
    if (!isset($files[$num])) $files[$num] = $f;
}

print_r($files);

-- using preg_match function:

$files = [];
foreach (glob("03-17-2017/*.xml") as $f) {
    preg_match("/\((\d{5})\)/", $f, $m);    // capturing the number
    $num = $m[1];
    if (!isset($files[$num])) $files[$num] = $f;
}

Upvotes: 1

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