SQLITE_ESCAPE_STRING(3)SQLITE_ESCAPE_STRING(3)sqlite_escape_string - Escapes a string for use as a query parameterSYNOPSIS
string sqlite_escape_string (string $item)
DESCRIPTION sqlite_escape_string(3) will correctly quote the string specified by $item for use in an SQLite SQL statement. This includes doubling up
single-quote characters ( ') and checking for binary-unsafe characters in the query string.
Although the encoding makes it safe to insert the data, it will render simple text comparisons and LIKE clauses in your queries unusable
for the columns that contain the binary data. In practice, this shouldn't be a problem, as your schema should be such that you don't use
such things on binary columns (in fact, it might be better to store binary data using other means, such as in files).
PARAMETERS
o $item
- The string being quoted. If the $item contains a NUL character, or if it begins with a character whose ordinal value is 0x01,
PHP will apply a binary encoding scheme so that you can safely store and retrieve binary data.
RETURN VALUES
Returns an escaped string for use in an SQLite SQL statement.
NOTES
Note
Do not use this function to encode the return values from UDF's created using sqlite_create_function(3) or sqlite_create_aggre-
gate(3) - use sqlite_udf_encode_binary(3) instead.
Warning
addslashes(3) should NOT be used to quote your strings for SQLite queries; it will lead to strange results when retrieving your
data.
SEE ALSO sqlite_udf_encode_binary(3).
PHP Documentation Group SQLITE_ESCAPE_STRING(3)
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SQLITE_UDF_ENCODE_BINARY(3)SQLITE_UDF_ENCODE_BINARY(3)sqlite_udf_encode_binary - Encode binary data before returning it from an UDFSYNOPSIS
string sqlite_udf_encode_binary (string $data)
DESCRIPTION sqlite_udf_encode_binary(3) applies a binary encoding to the $data so that it can be safely returned from queries (since the underlying
libsqlite API is not binary safe).
If there is a chance that your data might be binary unsafe (e.g.: it contains a NUL byte in the middle rather than at the end, or if it
has and 0x01 byte as the first character) then you must call this function to encode the return value from your UDF.
PHP does not perform this encode/decode operation automatically as it would severely impact performance if it did.
Note
Do not use sqlite_escape_string(3) to quote strings returned from UDF's as it will lead to double-quoting of the data. Use
sqlite_udf_encode_binary(3) instead!
PARAMETERS
o $data
- The string being encoded.
RETURN VALUES
The encoded string.
SEE ALSO sqlite_udf_decode_binary(3), sqlite_escape_string(3), sqlite_create_function(3), sqlite_create_aggregate(3).
PHP Documentation Group SQLITE_UDF_ENCODE_BINARY(3)
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