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PHP upload feature set suffix name judgment and random name, php upload suffix named _php tutorial

Source: Internet
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PHP upload feature set suffix name and random name, php upload suffix name


form.php

<HTML><Head>    <Metahttp-equiv= "Content-type"content= "text/html"CharSet= "Utf-8">    <title>Upload Image
  title>
   Head><Body><formMethod= "POST"Action= "upload.php"enctype= "Multipart/form-data">    <inputtype= "hidden"name= "Max_file_seze"value= "2000000">    <inputtype= "File"name= "File"value= "View">    <inputtype= "Submit"value= "Upload"name= "B1"> 
      form> 
       body> 
         HTML  >

upload.php

 Phpinclude("check.php");//Importing Custom Function Files$type=Array("JPG", "gif", "BMP", "JPEG", "PNG");//determine the type of upload file$fileext=Strtolower(Fileext ($_files[' File '] [' Name ']));$uploadfilename= Random (8);if(In_array($fileext,$type)){    $filename=Explode(".",$_files[' File '] [' Name ']); if(Is_uploaded_file($_files[' File '] [' Tmp_name '])){//echo $_files[' file ' [' Tmp_name '];        $flag=Move_uploaded_file($_files[' File '] [' Tmp_name '], "/library/webserver/documents/test/".$uploadfilename.".".$fileext); if($flag){            Echo"Upload success!" "; }Else{            Echo"Error."; }        Echo"Back"; }}

check.php

 PhpHeader("Content-type:text/html;charset=utf8");//get file suffix name functionfunctionFileext ($filename){    $sTemp=STRRCHR($filename, "."); return substr($sTemp, 1);}functionFILEEXT2 ($filename){    $sTemp=Explode(".",$filename); return $sTemp[Count($sTemp)-1];}//generate random file name functionfunctionRandom$length){    $captchaSource= "0123456789abcdefghijklmnopqrstuvwxyz This is an example of a random printout string"; $captchaResult= "2015";//random number return value    $captchaSentry= "";//random number Intermediate variable     for($i= 0;$i<$length;$i++){        $n=Rand(0, 35);#strlen ($captchaSource));        if($n>= 36){            $n= 36 +Ceil(($n-36)/3) * 3; $captchaResult.=substr($captchaSource,$n, 3); }Else{            $captchaResult.=substr($captchaSource,$n, 1); }    }    return $captchaResult;}?>

Consolidate three of files into one:

 Php//get file suffix name functionfunctionFileext ($filename){    $sTemp=STRRCHR($filename, "."); return substr($sTemp, 1);}functionFILEEXT2 ($filename){    $sTemp=Explode(".",$filename); return $sTemp[Count($sTemp)-1];}//generate random file name functionfunctionRandom$length){    $captchaSource= "0123456789abcdefghijklmnopqrstuvwxyz This is an example of a random printout string"; $captchaResult= "2015";//random number return value    $captchaSentry= "";//random number Intermediate variable     for($i= 0;$i<$length;$i++){        $n=Rand(0, 35);#strlen ($captchaSource));        if($n>= 36){            $n= 36 +Ceil(($n-36)/3) * 3; $captchaResult.=substr($captchaSource,$n, 3); }Else{            $captchaResult.=substr($captchaSource,$n, 1); }    }    return $captchaResult;}$type=Array("JPG", "gif", "BMP", "JPEG", "PNG");//determine the type of upload file$fileext=Strtolower(Fileext ($_files[' File '] [' Name ']));$uploadfilename= Random (8);if(In_array($fileext,$type)){    $filename=Explode(".",$_files[' File '] [' Name ']); if(Is_uploaded_file($_files[' File '] [' Tmp_name '])){//echo $_files[' file ' [' Tmp_name '];        $flag=Move_uploaded_file($_files[' File '] [' Tmp_name '], "/library/webserver/documents/test/".$uploadfilename.".".$fileext); if($flag){            Echo"Upload success!" "; }Else{            Echo"Error."; }        Echo"Back"; }}?>    
 
  
     <title>Upload Image</title>

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