Php verification code problems

Php verification code under linux php5 installed a php5-gd, but the verification code picture still cannot show why? The image is shown as follows: img. phpPHPcode & lt ;? Phpsession_start (); $ width = 50; $ height = 20; header (& quot; Co php verification code
Linux php5 installed a php5-gd, but the verification code picture still cannot show the solution why?


The image is shown as follows:




Img. php

PHP code

PHP code

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