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@ 2014-04-05T13:04:35Z

<?php

function solution($A) {
    // write your code in PHP5
    $result = -1;
    $n = count($A);
    if ($n > 0) {
        if (0 && max($A) == $A[$n-1]) {
            $result = $n-1;
        } else {
            $center = round($n/2);
            while($center >1 && $center < $n){
                $left = array_slice($A, 0, $center);
                $right = array_slice($A, $center);
                if (max($left) <= $A[$center]) {
                    if (min($right) >= $A[$center]) {
                        $result = $center;
                        break;
                    } else {
                        $center = round(($center + $n - 1)/2);
                    }
                } else {
                    $center = round($center/2);
                }
            }
        }
    }
    return $result;
}



  $A[0] = 4  ;
  $A[1] = 2  ;
  $A[2] = 2;
  $A[3] = 3 ; 
  $A[4] = 1  ;
  $A[5] = 4;
  $A[6] = 7 ; 
  $A[7] = 8  ;
  $A[8] = 6;
  $A[9] = 9;

    print_r(solution($A));

Output for git.master, git.master_jit, rfc.property-hooks: 5

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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