<?php//無限遍歷數組$a1 = array("a", "b", "c"); //一維數組$a2 = array(array(21, 3, 6), array("a", "b", "c")); //二維數組$a3 = array(array(array(5, 55), 4, 444), 2, 7, 6, 8, array("w", "d", array(3, 2, "a"), "s")); //多維不規則數組function fun($a) {  foreach ($a as $val) {    if (is_array($val)) { //如果鍵值是數組，則進行函數遞歸調用      fun($val);    } else { // 如果鍵值是數值，則進行輸出      echo "$val<br />";    } //end if      } //end foreach  } //end fun//fun($a1);//fun($a2);fun($a3);?>

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