php substring remove between --

I need to remove a string that is in between "--" (double dash) of a long string.

this-is-a-string--REMOVE--this-is-another-string

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glyncoAsked:
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gplanaCommented:
try this:
$your_string = "this-is-a-string--REMOVE--this-is-another-string";
$pos = strpos($your_string,'--');
$left_part = substr($your_string,0,$pos-1);
$pos = strpos($your_string, '--', $pos+2);
$right_part = substr($your_string, $pos+2);
$your_string = $left_part . $right_part;

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Kiran SonawaneProject LeadCommented:
Try like this
$str = "this-is-a-string--REMOVE--this-is-another-string";
echo preg_replace('/--+/','',$str);
OR

echo preg_replace('/[-]{2,}/','',$str);
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StingRaYCommented:
<?php

$string = 'this-is-a-string--REMOVE--this-is-another-string--REMOVE ME TOO--the-rest-of-string';
$string = preg_replace('/(--)(.*)(--)/U','$1$3',$string);
echo $string;

?>

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Result:

this-is-a-string----this-is-another-string----the-rest-of-string
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glyncoAuthor Commented:
StingRay when I change the string to something like this. The --coins-currency-- is not removed.

$string = '2012-04-02-165747--coins-currency--coins-title';
$string = substr(str_replace("-"," ", $string), 18);
$string = preg_replace('/(--)(.*)(--)/U','$1$3',$string);
echo $string;

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StingRaYCommented:
Because of you have replaced "-" to " " already. Swap line 2 and 3 and see the result.
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