网站地图
【www.gdgbn.com--php常用代码】
//
$array=array(1,1,1,1,1,8=>1,4=>1,19,3=>13); //创建数组
print_r($array); //输出数组内容
//
$a=array("green","red","yellow"); //定义第一个数组
$b=array("avocado","apple","banana"); //定义第二个数组
$c=array_combine($a,$b); //用前两个数组值作为新数组的键与值
print_r($c); //输出新建的数组
//
foreach(range(0,12)as $number) //返回数组0-12
{
echo $number.",";
}
echo "
";
foreach(range(0,100,10)as $number) //返回数组0，10，20……100
{
echo $number.",";
}
echo "
";
foreach(range("a","i")as $letter)
{
echo $letter.",";
}
echo "
";
foreach(range("c","a")as $letter) //返回数组c，b，a
{
echo $letter.",";
}
//
$input_array=array("a","b","c","d","e"); //定义初始数组
print_r(array_chunk($input_array,2)); //将数组分割，不保留原数组键名
print_r(array_chunk($input_array,2,true)); //将数组分割，保留原数组键名
//
$array=array(1,"hello",1,"php","hello"); //定义一个数组
print_r(array_count_values($array)); //把原数组元素出现次数赋值给新数组并显示
//
$array1=array("a"=>"green","b"=>"brown","c"=>"blue","red"); //定义数组1
$array2=array("a"=>"green","yellow","red"); //定义数组2
$result=array_diff_assoc($array1,$array2); //把两个数组的差集赋值给数组
print_r($result); //输出差集的内容
//
$array1=array("blue"=>1,"red"=>2,"green"=>3); //定义数组1
$array2=array("green"=>4,"blue"=>5,"yellow"=>6); //定义数组2
$result=var_dump(array_diff_key($array1,$array2)); //对键名计算差集
print_r($result);
//
//定义回调函数
function key_compare_func($a, $b)
{
if($a==$b)
{
return 0; //如果两参数相等，返回0
}
return($a>$b)?1:-1; //如果$a>$b返回1，小于则返回-1
}
//分别定义两个数组
$array1=array("a"=>"green","b"=>"brown","c"=>"blue","red");
$array2=array("a"=>"green","yellow","red");
//用回调函数做索引检查来计算数组的差集
$result=array_diff_uassoc($array1,$array2,"key_compare_func");
print_r($result);