How to integarate and import the data from salesforce to php and from php to salesforce
closed as not a real question by metadaddy♦ Feb 8 '13 at 19:43
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please refer the above link to understand how to use the Php toolkit.There are good references to start with.
You will be using partner or enterprise WSDL and then using SOAP API.
Other way would be using REST API of salesforce and using oauth 2.0 as authentication mechanism.
This resource above may help you