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px_get_data_blob(3) [debian man page]

PX_GET_DATA_BLOB(3)					     Library Functions Manual					       PX_GET_DATA_BLOB(3)

PX_get_data_blob -- Get blob data field SYNOPSIS
#include <paradox.h> int PX_get_data_blob(pxdoc_t *pxdoc, char *data, int len, int *mod, int *blobsize, char **value) DESCRIPTION
Reads a blob data field. This function may be used for all types of blobs except for fields of type pxfGraphic. data points to the start of the data field in the record. It must be calculated by summing up all field length before the field to operate on and add it to the base pointer of the record. You should use this function instead of accessing the data directly. PX_get_data_blob returns blob data stored in the record itself, or in an MB files which must have been set with PX_set_blob_file(3). The function allocates memory for the data returned in *value. This memory has to be freed by the application, if the function returns suc- cessfully. The amount of memory for the blob is returned in *blobsize. *mod returns the so called modification number of the blob which can often be used as an unique id for creating file names, if the data is saved in a file. Note: This function is deprecated and obsolete if PX_retrieve_record(3) is used. RETURN VALUE
Returns 0 if the value is NULL, -1 in case of an error and 1 otherwise. SEE ALSO
PX_get_data_graphic(3), PX_get_data_bcd(3), PX_get_data_byte(3), PX_get_data_long(3), PX_get_data_short(3), PX_get_data_double(3), PX_get_data_byte(3), PX_get_data_bytes(3) AUTHOR
This manual page was written by Uwe Steinmann PX_GET_DATA_BLOB(3)

Check Out this Related Man Page

PX_CREATE_FP(3) 														   PX_CREATE_FP(3)

px_create_fp - Create a new paradox database

bool px_create_fp (resource $pxdoc, resource $file, array $fielddesc) DESCRIPTION
Create a new paradox database file. The actual file has to be opened before with fopen(3). Make sure the file is writable. Note Calling this functions issues a warning about an empty tablename which can be safely ignored. Just set the tablename afterwards with px_set_parameter(3). Note This function is highly experimental, due to insufficient documentation of the paradox file format. Database files created with this function can be opened by px_open_fp(3) and has been successfully opened by the Paradox software, but your milage may vary. PARAMETERS
o $pxdoc - Resource identifier of the paradox database as returned by px_new(3). o $file -File handle as returned by fopen(3). o $fielddesc - fielddesc is an array containing one element for each field specification. A field specification is an array itself with either two or three elements.The first element is always a string value used as the name of the field. It may not be larger than ten characters. The second element contains the field type which is one of the constants listed in the table Constants for field types. In the case of a character field or bcd field, you will have to provide a third element specifying the length respectively the precesion of the field. If your field specification contains blob fields, you will have to make sure to either make the field large enough for all field values to fit or specify a blob file with px_set_blob_file(3) for storing the blobs. If this is not done the field data is truncated. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Creating a Paradox database with two fields <?php if(!$pxdoc = px_new()) { /* Error handling */ } $fp = fopen("test.db", "w+"); $fields = array(array("col1", "S"), array("col2", "I")); if(!px_create_fp($pxdoc, $fp, $fields)) { /* Error handling */ } px_set_parameter($pxdoc, "tablename", "testtable"); for($i=-50; $i<50; $i++) { $rec = array($i, -$i); px_put_record($pxdoc, $rec); } px_close($pxdoc); px_delete($pxdoc); fclose($fp); ?> SEE ALSO
px_new(3), px_put_record(3), fopen(3). PHP Documentation Group PX_CREATE_FP(3)
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