CODEWITHSUNDEEP
phpstringexplodetrim
lhew maniacup
lhew maniacup

Reputation: 3

Exploding and Trimming Strings In PHP

i have format of string like this:

1PR009427S0000754

first let me explain this format. if you see the "1P" that means its the start of the part number of a product. Starting from the "S" that represents the serial number of the product. with this format of strings i am able to split or explode that one string into two without any problem, not until i encounter these kind of string formats.

1P0005-00118-33S3S216

1PS-35C-602S6510873143

1P0005-00115-SPS3S216

if you guys noticed that for these new formats they got a couple of "S" in one string the problem is when I'm Exploding the string i used the 1P to tell the program that it is the start of the part number and as soon as it sees the "S" that's the start of the serial number of the product. My concern is, when I'm exploding the new strings I'm getting a result of a wrong part number and serial number because of a couple of S that appears in the strings.

here is the sample of my program

if($_POST['submit'])
{
    $text = explode("<br />",nl2br($_POST['pn']));
    foreach ($text as $key => $value)
    { //start foreach statements
        $precage = "0617V";
        $presym = "[)>";
        $partn = "1P";
        $serial = "S";

        $match = preg_match('/[)>0617V1PS]/', $value);
        if($match == true)
        {      

            $value2 = substr($value[1], 5);

            $result = explode("1P", $value2);
            $fin_pnresult = explode("S", $result[1]) ; 

            $serial1 = strrchr($value2, $serial);
            $fin_serial = substr($serial1, 1);
            $cageresult = substr($value2, 0, strpos($value2, "1P"));


        }
    }

?>

Thank you guys for your help.

Upvotes: 0

Views: 564

Answers (2)

roninblade
roninblade

Reputation: 1892

i would suggest you change the delimiters if you have any control over that part.

here's a quick and dirty approach to your current issue.

$string = "1P0005-00118-33S3S2161PS-35C-602S65108731431P0005-00115-SPS3S216";

$products = explode("1P", $string);

foreach ($products as $product) {
  if (strlen($product) == 0) continue;

  $first_s = strpos($product, "S", 1);
  if (substr($product, $first_s, 2) == 'SP') {
    $first_s = strpos($product, "S", $first_s+1);
  }
  $serial = substr($product, $first_s+1, strlen($product));
  $product_id = substr($product, 0, $first_s);
  echo $product_id."\n".$serial."\n\n";
}
// should give you
/*
0005-00118-33
3S216

S-35C-602
6510873143

0005-00115-SP
3S216

*/

Upvotes: 1

zedfoxus
zedfoxus

Reputation: 37129

As you observed, it is extremely difficult to split correctly based on an S identifier for serial number. You may have data that may look like this: 1PABCRSQ S1234 where your part is supposed to be 1PABCRSQ and serial is supposed to be 1234. Splitting on S will not do the trick.

In another case your data may look like this: 1ABCRSSSSS1234 where your part is supposed to be 1ABCRSS and serial is supposed to be SS1234. There is no easy way for a program to know which split of an S is really the part and which is the serial.

Assuming that the first S splits the part and the serial, the following code might be helpful to you:

<?php

    $data = '1ABCRSSSSS1234'; //'1P0005-00115-SPS3S216';

    // split by S
    $partInfo = explode('S',$data);

    // The first element of split array is the part. Remove 1P and show the part number
    echo "Data was $data\n";
    echo 'Part is ', str_replace('1P', '', $partInfo[0]), "\n";

    // Remove the first element and attach the remaining elements using an S
    array_shift($partInfo);
    $partInfo = implode('S', $partInfo);
    echo "Serial is $partInfo\n";

?>

Result:

Data was 1ABCRSSSSS1234
Part is 1ABCR
Serial is SSSS1234

Data was 1P0005-00115-SPS3S216
Part is 0005-00115-
Serial is PS3S216

If there are more rules to how part and serial needs to be split that explicitly define which S to consider, someone on SO can help with a better answer.

Upvotes: 0

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