The difference between daddslashes () and saddslashes () in PHP

----Saddslashes function Daddslashes ($string, $force = 0, $strip = FALSE) { Whether a string or array enforces removal If the magic reference is not turned on or $force is not 0 if (! MAGIC_QUOTES_GPC | | $force) { if (Is_array ($string)) {//If it is an array then loop executes this function foreach ($string as $key = = $val) { $string [$key] = Daddslashes ($val, $force); } } else { If the magic reference is turned on or $force to 0 The following is a ternary operator that executes Stripslashes minus the backslash character if $strip is true, and then executes the addslashes $strip is true, that is, the backslash character is first removed and then escaped for $_get,$_post,$_cookie and $_request $_request arrays contain the values of the first three arrays Why should we remove the $string first and then escape it, because sometimes $string have two backslashes, Stripslashes is to filter out the excess backslash $string = Addslashes ($strip? Stripslashes ($string): $string); } } return $string; } ------Saddslashes function Saddslashes ($string) {if (! MAGIC_QUOTES_GPC) { if (Is_array ($string)) {//If an array is escaped, the value in the set is recursively escaped foreach ($string as $key = = $val) { $string [$key] = saddslashes ($val); } } else { $string = Addslashes ($string); Escapes the single quotation mark ('), double quotation mark ("), backslash (\), and NUL (NULL character) } return $string; }else{ return $string; } ?> Copy Code The point is: Saddslashes can be used to escape every data: function Saddslashes ($string) { if (Is_array ($string)) { foreach ($string as $key = = $val) { $string [$key] = saddslashes ($val); } } else { $string = Addslashes ($string); } return $string; } ?> Copy Code

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