How to properly escape a string via PHP and mysql -

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can explain difference between using mysql_real_escape_string on string or wrapping `` around column.

for example "insert table (``column``) values ('$string')"

or

$escapestring = mysql_real_escape_string($string);  "insert table (column) values ('$escapedstring')"

what difference between these 2 , should use? thanks.

there's difference between backtick ` , single quote '.

the backtick intended escape table , field names may conflict mysql reserved words. if had field named date , query select date mytable i'd need escape use of date when mysql parses query, interpret use of date field rather datatype date.

the single quote ' intended literal values, in select * mytable somefield='somevalue'. if somevalue contains single quotes, need escaped prevent premature closing of quote literal.


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