Use x() function to check for array containement (I think)
this is response to @fabrixxxm comment
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@ -1104,7 +1104,7 @@ function item_add_language_opt(&$arr) {
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if (version_compare(PHP_VERSION, '5.3.0', '<')) return; // LanguageDetect.php not available ?
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if ( $arr['postopts'] )
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if ( x($arr, 'postopts') )
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{
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if ( strstr($arr['postopts'], 'lang=') )
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{
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