Synopsis

    While(expr)

Starts a while loop. Execution will return to this point when EndWhile() is called, until expr is no longer true. If a condition is met causing the loop to exit, it continues on past the EndWhile().

    exten => 123,1,Set(COUNT=1)
    exten => 123,2,While($[ ${COUNT} < 5 ])
    exten => 123,3,SayNumber(${COUNT})
    exten => 123,4,Set(COUNT=$[${COUNT} + 1])
    exten => 123,5,EndWhile()