Move the pointer to the initial location of the dataset in PHP _php tutorial

In PHP we want to return the initial position of the dataset Mysql_data_seek function can be implemented, see the code below

The code is as follows

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Start Snipit 1 $sql = "SELECT * from" while ($row = Mysql_fetch_assoc ($result)) { Do stuff with $row } Mysql_data_seek ($result, 0); The point is here. while ($row = Mysql_fetch_assoc ($result)) { Do and stuff with $row } ?> "; $result = mysql_query ($sql); Definition and usage The Mysql_data_seek () function moves the pointer to the internal result. Grammar Mysql_data_seek (data,row) parameter description Data required. Returns a result set of type resource. The result set is obtained from the invocation of mysql_query (). Row required. The number of rows of the new result set pointer that you want to set. 0 indicates the first record. Description Mysql_data_seek () Moves the row pointer inside the MySQL result specified by the data parameter to the specified line number. The next call to Mysql_fetch_row () returns that line. Row starts from 0. The row value should range from 0 to mysql_num_rows-1. However, if the result set is empty (mysql_num_rows () = = 0), moving the pointer to 0 will fail with a e_warning level error, and Mysql_data_seek () will return false. return value Returns true if successful, and false if it fails.

http://www.bkjia.com/PHPjc/633101.html www.bkjia.com true http://www.bkjia.com/PHPjc/633101.html techarticle in PHP we want to return the initial position of the dataset Mysql_data_seek function can be implemented, the following see Code code below copy code?//Start snipit 1 $sql = SELECT * from table; $result =...

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