note 50789 deleted from control-structures.foreach by aidan

Note Submitter: gilthansNOSPAAM at gmailSPAAMBLOCK dot com ---- Please note that while(list($key, $value) = each($array)) is NOT completely identical in functionality to foreach. Note the next code: <?php // The idea is that each $value will only run once. foreach($array as $value){ $array = array_diff($array, Array($value)) //... } //This does NOT work. foreach does not run through the //actual array, but creates a different one to run through, //so changes in the array inside the foreach do not affect //it. while(list(,$value) = each($array)){ $array = array_diff($array, Array($value)); //... } //This, however, will work as expected. Each $value will be //looped only once. In bigger arrays, where a value may be //repeated many times, this while() is faster than a foreach //that checks every loop weather that $value was already //used. ?>