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Message: <blockquote data-quote="Markshall" data-source="post: 441413" data-attributes="member: 1872">No, it’s self-assigning a variable whilst concatenating it to the string simultaneously.It prints it to the string at the same time as assigning it as a variable so I can use it later on. What you’re thinking of is this:[PHP]'.' . ($salt==self::randString($timeout)) . '.' .[/PHP]The extra = symbol. Which would echo out false in this case, since $salt is previously undefined so would have no value and would therefore not match the value of self::randString($timeout)</blockquote>