$first = array("aa", "bb", "cc");$second = array(11,22,33);$third = array_merge($first, $second); foreach ( $third as $val ) { print "$val<br />";}上面的代码执行结果如下:The output is an array with ("aa", "bb", "cc", 11, 22, 33)特别提示:如果输入数组有相同的字符串键,该键然后后面的值将覆盖前一个。然而,如果数组包含数字键,后面的值将不会覆盖原来的值,但将追加。