(PHP 5 >= 5.3.3, PHP 7)
PDO::pgsqlCopyToFile — Copy data from table into file
$table_name
, string $filename
[, string $delimiter = '\t'
[, string $null_as = "\\\\N"
[, string $fields
]]] ) : bool
Copies data from table into file specified by filename
using delimiter as fields delimiter and fields list
table_nameString containing table name
filenameFilename to export data
delimiter
Delimiter used in file specified by filename
null_asHow to interpret null values
fieldsList of fields to insert
Returns TRUE on success, 或者在失败时返回 FALSE.