PHP - Sort Functions For Arrays In this chapter, we will go through the following PHP array sort functions: sort() - sort arrays in ascending order rsort() - sort arrays in descending order asort() - sort assoc
arsort()- sort associative arrays in descending order, according to the value krsort()- sort associative arrays in descending order, according to the key Sort Array in Ascending Order - sort() The following example sorts the elements of the$carsarray in ascending alphabetical order: ...
方括号和花括号可以互换使用来访问数组单元(例如 $array[42] 和 $array{42} 在上例中效果相同)。 自PHP 5.4 起可以用直接对函数或方法调用的结果进行数组解引用,在此之前只能通过一个临时变量。 自PHP 5.5 起可以直接对一个数组原型进行数组解引用。 Example #7 数组解引用 <?phpfunction getArray() {...
Discover the power of PHP's array_multisort() function as we explore its versatility, performance, and various use cases in this ultimate sorting tool.
array('price'=>'200.0','product'=>'product 3') ); function cmp($a, $b) { return $a['price'] > $b['price']; } usort($array, "cmp"); print_r($array); Output: Array ( [0] => Array ( [price] => 134.50 [product] => product 1 ...
array_key_exists($val,$arr) 检索指定键值是否存在数组中 isset($arr[$val]) 判断指定键值是否存在 1 explode($sep, $str) 将字符串通过分隔符转化为数组 2 strpos() 函数查找字符串在另一字符串中第一次出现的位置。 3 array_pop() 函数删除数组中的最后一个元素。 返回数组的最后一个值。如果数组是空...
Similarly you can sort the numeric elements of the array in ascending order. Example:- Thisprint_r()statement gives the following output: Array ( [0] => 1 [1] => 2 [2] => 2.5 [3] => 4 [4] => 7 [5] => 10 ) Sorting Indexed Arrays in Descending Order ...
In this tutorial, you shall learn how to sort an array of strings based on their length in PHP using usort() function, with the help of example programs.
( $arr as $key => $row ){ $id[$key] = $row ['id']; $age[$key] = $row ['age']; } //与上方循环数据所得一样-推荐使用array_column //$id = array_column($arr, 'id'); //$age = array_column($arr, 'age'); array_multisort($id, SORT_ASC, $age, SORT_DESC, $arr);...
$a1=array("Dog","Dog","Cat"); $a2=array("Pluto","Fido","Missy"); array_multisort($a1,SORT_ASC,$a2,SORT_DESC); print_r($a1); print_r($a2); ?> Try it Yourself » Example Merge two arrays and sort them as numbers, in descending order: ...