Sort functions for PHP

Sort (): Simple sorting of an array element from low to high, this function can be arranged numerically or alphabetically.

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    $data = array(5,8,1,7,2);  sort($data);  print_r($data);?>输出结果如下所示：Array ([0] => 1[1] => 2[2] => 5[3] => 7[4] => 8)

Rsort (): An array of elements are inverted from high to low, and can be arranged numerically or alphabetically.

   
    $data = array(5,8,1,7,2);rsort($data); print_r($data);?>它的输出结果如下：Array ([0] => 8[1] => 7[2] => 5[3] => 2[4] => 1)

Ksort (): a function that sorts according to a keyword, while maintaining the relevance of the keyword during sorting.

   
    $data = array("US" => "United States", "IN" => "India", "DE" => "Germany", "ES" => "Spain");    ksort($data);    print_r($data);?>它的输出结果如下：Array ([DE] => Germany[ES] => Spain[IN] => India[US] => United States)

Krsort (): An array of keywords is inverted according to the keyword.

   
    $data = array("US" => "United States", "IN" => "India", "DE" => "Germany", "ES" => "Spain");    krsort($data);    print_r($data);?>它的输出结果如下：Array ([US] => United States[IN] => India[ES] => Spain[DE] => Germany)

Asort (): Use value sorting to replace keyword ordering, note that the link between the keyword-value is always maintained.

   
    $data = array("US" => "United States", "IN" => "India", "DE" => "Germany", "ES" => "Spain");    asort($data);    print_r($data);?>它的输出结果如下：Array ([DE] => Germany[IN] => India[ES] => Spain[US] => United States)

Arsort (): Inverted alphabetically by value.

   
    $data = array("US" => "United States", "IN" => "India", "DE" => "Germany", "ES" => "Spain");    arsort($data);    print_r($data);?>Array ([US] => United States[ES] => Spain[IN] => India[DE] => Germany)

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The above describes the PHP sorting function, including the aspects of the content, I hope that the PHP tutorial interested in a friend helpful.

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