The method of PHP to judge the format through the file header _php skill

This article illustrates how PHP uses the file header to determine the format. Share to everyone for your reference, specific as follows:

function Judgefile ($file, $form) {
if (!empty ($file) &&!empty ($form)) {
$filehead = fopen ($file, ' R ');
$bin = Fread ($filehead, 2);
Fclose ($filehead);
$data = Unpack (' C2chars ', $bin);
$type _code = intval ($data [' chars1 ']. $data [' chars2 ']);
Switch ($type _code) {case
7790: $fileType = ' exe ';
  Case 7784: $fileType = ' midi ';
  Case 8075: $fileType = ' zip ';
  Case 8297: $fileType = ' rar ';
  Case 255216: $fileType = ' jpg ';
  Case 7173: $fileType = ' gif ';
  Case 6677: $fileType = ' bmp ';
  Case 13780: $fileType = ' png ';
  Default: $fileType = ' unknown '; break;
}
if (!is_array ($form)) {
if ($fileType = = $form) {return
true;
} else{return
false;
}
else{
if (In_array ($file, $form)) {return
true;
} else{return
FALSE;}}
else{return
false;
}

Add: small knitting here recommend a site for the layout of the PHP format landscaping tools to help you in the future of PHP programming code layout:

PHP code online format Landscaping tools:

Http://tools.jb51.net/code/phpformat

In addition, because PHP belongs to the C language style, the following tool can also be used to format PHP code:

C Language Style/html/css/json code formatting landscaping Tools:
Http://tools.jb51.net/code/ccode_html_css_json

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I hope this article will help you with the PHP program design.