Two PHP face questions for six rooms

<?php
/*=============================================================================
#     FileName:base64.php
#         Desc: Six room-pen test one: Read a file, encode it Base64, alphanumeric a newline in every 76 words 
#       Author:houyongzheng

#         time:2013-05-20 14:25
=============================================================================*/
header (' content-type:text/html; Charset=utf-8 ');
$body =file_get_contents (' base64.txt ');
$base _body=base64_encode ($body);
$count =1;
For ($i =0 $i <strlen ($base _body); $i = $i +76) {
	$index = ($count-1) *76;
	@ $all _str.= ' <p> ' substr ($base _body, $index, 76). ' </p> ';
	$count + +;
}
echo $all _str;
? >

<?php
/*=============================================================================
#     FileName:array.php
#         Desc: Six room pens question two: Write a function, the parameter is $n, generate an array, its element is 1~ $n, each element position randomly arranges, cannot repeat
#       Author: Houyongzheng

#         time:2013-05-20 15:01
============================================================= ================*/
function Rand_array ($n) {
	$array =array ();
	$rand _array=array ();
	for ($i =1; $i <= $n; $i + +) {
		Array_push ($array, $i);
	}
	return $array;
	For ($i =0 $i <= ($n-1); $i + +) {
		$rand =array_rand ($array, 1);
		Array_push ($rand _array, $array [$rand]);
		Unset ($array [$rand]);
	}
	return $rand _array;
}
Var_dump (Rand_array);
>