Remove duplicate substring from comma seperated string in php

Question

I have this string: $entitlemnet = '43857403,erot,43857403,erot,rejh'

I want to remove all the duplicate values from this string. How can i do that?

See code below.

$roql_Ent_result = RNCPHP\ROQL::query($EntQuery)->next();

while ($Ent_result = $roql_Ent_result->next())
{
    $Entitlement = $Ent_result['Entitlement'];
    $findme = $Entitlement.",";
    $pos = stripos($EntitlementString, $findme);

    if ($pos === false)
    {
        $EntitlementString = $EntitlementString.$Entitlement.", "; 
    }
}

if ($EntitlementString != "")
{
    $EntitlementString = substr($EntitlementString,0,(strlen($EntitlementString)-2)).";";
}

do you mean this string 43857403,erot,43857403,erot,rejh will result to 43857403,erot,rejh ? — PrinceG
– PrinceG, Commented Jan 14, 2016 at 8:45

JazzCat · Accepted Answer · 2016-01-14 15:04:07Z

2

If you simply want to remove the duplicates from the string.

$entitlemnet = '43857403,erot,43857403,erot,rejh';
$unique_string = implode(',', array_unique(explode(',', $entitlemnet)));

Turn your string into an array by splitting it with explode() by delimiter ','
Remove duplicate values with the function array_unique()
Turn the array back into a string by concatenating the array values with delimiter ','

edited Jan 14, 2016 at 15:04

answered Jan 14, 2016 at 8:46

JazzCat

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Comments

Hemanth Nagendrappa · Accepted Answer · 2016-02-26 08:27:47Z

1

Try this

$entitlemnet = "43857403,erot,43857403,erot,rejh";
$result = implode(',', array_unique(explode(',', $entitlemnet)));
echo $result;

answered Feb 26, 2016 at 8:27

Hemanth Nagendrappa

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Comments

The fourth bird · Accepted Answer · 2016-01-14 08:49:17Z

0

I think you can do it like this:

$entitlemnet = "43857403,erot,43857403,erot,rejh";
$result = implode(',', array_unique(explode(',', $entitlemnet)));
echo $result;

Will result in:

43857403,erot,rejh

answered Jan 14, 2016 at 8:49

The fourth bird

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2 Comments

hemanth kumar Over a year ago

Thank you so much, this code is working fine, But if their is a space in the starting like 'STOR-APD, 001-0669-001,ISSP3.0,CXFS7,STOR-SAN,STOR-CXFS, STOR-DMF, STOR-TMF, 001-0586-030, DMF6,STOR-DMF,001-0669-001, XFS-XVM6, XFS-XVM-RHEL6,STOR-XVM, STOR-NAS, 001-9007-001, STOR-LUSTRE' its not deleting duplicates.

The fourth bird Over a year ago

@hemanthkumar You can use array_map and trim. $result = implode(',', array_unique(array_map('trim', explode(',', $entitlemnet))));

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