PHP backup database generates SQL file and downloads function code

PHP backup database generates SQL file and downloads function code_PHP tutorial

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Release： 2016-07-21 15:20:59

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Copy code The code is as follows:

 
/****** Back up database structure ******/ 
/* 
Function name: table2sql() 
Function function: Convert the table structure into SQL 
Function parameter: $table: the name of the table to be extracted 
Return value: Return the extracted result, SQL Set 
 function author: heiyeluren 
*/ 
function table2sql($table) 
{ 
global $db; 
$tabledump = "DROP TABLE IF EXISTS $table;n"; 
$createtable = $db--->query("SHOW CREATE TABLE $table"); 
$create = $db->fetch_row($createtable); 
$tabledump .= $create [1].";nn"; 
return $tabledump; 
} 
/****** Back up the database structure and all data ******/ 
/* 
Function name: data2sql() 
Function function : Convert the table structure and data into SQL 
 function parameters: $table: table name to be extracted 
 return value: return the extracted results, SQL collection 
 function author: heiyeluren 
* / 
function data2sql($table) 
{ 
global $db; 
$tabledump = "DROP TABLE IF EXISTS $table;n"; 
$createtable = $db->query ("SHOW CREATE TABLE $table"); 
$create = $db->fetch_row($createtable); 
$tabledump .= $create[1].";nn"; 
$rows = $db->query("SELECT * FROM $table"); 
$numfields = $db->num_fields($rows); 
$numrows = $db->num_rows($rows) ; 
while ($row = $db->fetch_row($rows)) 
{ 
$comma = ""; 
$tabledump .= "INSERT INTO $table VALUES("; 
for($i = 0; $i < $numfields; $i++) 
{ 
$tabledump .= $comma."'".mysql_escape_string($row[$i])."'" ; 
$comma = ","; 
} 
$tabledump .= ");n"; 
} 
$tabledump .= "n"; 
return $tabledump; 
} 
?> 

            

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