Examples of using PHP to generate arrays

Source: Internet
Author: User
Tags arrays

Requires that you implement an array of 7 elements, take out the 5 elements in the array, and generate a new array that is unique

The code is as follows: <?php $arr = Array (1,2,3,4,5); /@ Res Every element of every note assembled @ $a temp array @ $index array @ $arr The requested array @ $b Final result * * * $a = array (); $b = Array (); $total = 0; Format ($a, 0, $arr);  function format ($res, $index, $arr) {global $total;  Global $b;  $new _arr = $res;  $n _arr = Array ();    if ($index = = count ($arr)) {if (count ($new _arr) ==5) {$b [] = $new _arr;    echo "<pre>";    $total + +;  } return;  Format ($new _arr, $index +1, $arr);  $new _arr[] = $arr [$index]; Format ($new _arr, $index +1, $arr); echo "<pre>"; Print_r ($b); echo "</pre>";
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