Php verification code image here we will introduce the preparation of the image verification code. for the character verification code, refer to the following article:
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The image verification code can be created in three steps:
1. create a picture library
2. randomly select an image
3. output image content
The code is as follows (a large number of images are stored in the database to make it easier for me to directly use local images ):
'Dog', dirname (_ FILE __). '\ pics \ pic1.jpg' => 'modem', dirname (_ FILE __). '\ pics \ pic2.jpg' => 'fish', dirname (_ FILE __). '\ pics \ pic3.jpg' => 'Pi', dirname (_ FILE __). '\ pics \ pic4.jpg' => 'map', dirname (_ FILE __). '\ pics \ pic5.jpg' => 'Donkey ', dirname (_ FILE __). '\ pics \ pic6.jpg' => 'bird', dirname (_ FILE __). '\ pics \ pic7.jpg' => 'Chicken ', dirname (_ FILE __). '\ pics \ pic8.jpg' => 'Duck ', dirname (_ FILE __). '\ pics \ pic9.jpg' => 'Elephant',); $ rnd = rand (); $ img = dirname (_ FILE __). '\ pics \ pic'.w.rnd.'.jpg'; $ _ SESSION ['authcode'] = $ data [$ img]; $ content = file_get_contents ($ img); header ("content-type: image/png "); echo $ content;
Client:
Input Error';} Exit () ;}?>
Result chart:
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