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quantifiers and regular expressions greedy/nongreedy query( ) changing data in databases changing format of retrieved rows creating tables deleting data from databases inserting data into databases placeholders in UPDATE commands inputting form data retrieving data from databases safely inserting form data QUERY_STRING element in $_SERVER auto-global array quote( ) quotes double [See double-quoted strings] matching and balancing (debugging feature) single [See single quotes] turning straight into curly quoteSmart( ) 2nd |
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