Website security php scripts sql injection proof

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
The scripts in our website needs to be made secure .The site is quite big with commerce and inventory control built in . We have been having sql injection problems so each and every page/script needs to be made secure. We are also having a vast number of spam from contact us page. we have tried captcha etc but did not work so the sql injection and script problem has come to the fore.

Skills required:
MySQL, PHP, Script Install, Web Security
About the employer:
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