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1)array_count_values
$array = array(1, "hello", 1, "world", "hello");
$arr=array_count_values($array);//函数返回数组类型的数据
print_r($array);//原来的数组不会受到任何影响
2)array_key_exists
$search_array = array('first' => 1, 'second' => 4);
var_dump(array_key_exists('second',$search_array));
3)array_search
$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red',4=>15);
var_dump(array_search('15', $array,true));
4)count
$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red',4=>15);
var_dump(count($array));
5)in_array
$os = array("Mac", "NT", "Irix", "Linux");
var_dump(in_array('Mac', $os));
6)list
$arr=array(60,80,100);
list($sunshengli,$xiaohong,$xiaoming)=array(60,80,100);
echo $sunshengli;
7)asort
$students=array(
'sunshengli'=>60,
'lilei'=>80,
'hanmeimei'=>100,
'zhangsan'=>90
);
asort($students);
print_r($students);
直接对数组里面的数据进行排序,第二个参数
SORT_REGULAR - 正常比较单元(不改变类型)
SORT_NUMERIC - 单元被作为数字来比较
SORT_STRING - 单元被作为字符串来比较
SORT_LOCALE_STRING - 根据当前的区域(locale)设置来把单元当作字符串比较。
8)array_filter
function odd($var)
{
return($var % 2 == 1);
}
function even($var)
{
return($var % 2 == 0);
}
$array1 = array("a"=>1, "b"=>2, "c"=>3, "d"=>4, "e"=>5);
$array2 = array(6, 7, 8, 9, 10, 11, 12);
echo "Odd :\n";
print_r(array_filter($array1, "odd"));
echo "Even:\n";
print_r(array_filter($array2, "even"));
参考:PHP基础