PHP - Using strcpsn() to protect against SQL injection?
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MichaelMitchell
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Published on 2012-11-03T22:49:13Z
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2012/11/03
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I am making a sort of form validation system and I need to check the SQL database to see if the username is already there.
So, my question, is it effective to use a little if statement like this to protect against an attack?
if (strcspn($string, "/\?!@#$%^&*()[]{}|:;<>,.\"\'-+=" == strlen($string)){
return true;
}
So essentially, if the string contains any of these characters, "/\?!@#$%^&*()[]{}|:;<>,.\"\'-+=", then the length will not equal that of the original $string.
I am just wondering if this is sufficient to protect, or if there is more that I must do. Thanks.
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