测试代码:
$a1 = array('dbhost' => 'localhost', 'dbname' => 'nextblog', 'dbport' => 3306); $a2 = array('dbuser' => 'root', 'dbpass' => 'pass', 'dbport' => 3305); print_r(array_merge($a1, $a2)); print_r($a1 + $a2);
方式一:使用array_merge()函数,如果输入的数组中有相同的字符串键名,则该键名后面的值将覆盖前一个值。然而,如果数组包含数字键名,后面的值将不会覆盖原来的值,而是附加到后面。
Array ( [dbhost] => localhost [dbname] => nextblog [dbport] => 3305 [dbuser] => root [dbpass] => pass )
方式二:使用数组相加方式,如果输入的数组中有相同的字符串键名,则该键名后面的值将被忽略。
Array ( [dbhost] => localhost [dbname] => nextblog [dbport] => 3306 [dbuser] => root [dbpass] => pass )