php $a1=array( a = red , b = green , c = blue , d = yellow ); $a2=array( a = purple , b = orange );array_splice($a1,0,2,$a2); print_r($a1); ? 亲自试一试例子 2 与本页前面部分的实例...www.w3school.com.cn
WarningDefining case-insensitive constants is deprecated as of PHP 7.3.0. As of PHP 8.0.0, only is an acceptable value, passing will produce a warning. Note: Case-insensitive const...www.php.net