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php 备份数据库(生成word,excel,json,xml,sql)

2011-01-12 22:04 746 查看

单表备份

代码：

Php代码

<?php

class
Db

{

var

$conn
;

function
Db(
$host
=
"localhost"
,
$user
=
"root"
,
$pass
=
"root"
,
$db
=
"test"
)

{

if
(!
$this
->conn=mysql_connect(
$host
,
$user
,
$pass
))

die
(
"can't connect to mysql sever"
);

mysql_select_db($db
,
$this
->conn);

mysql_query("SET NAMES 'UTF-8'"
);

}

function
execute(
$sql
)

{

return
mysql_query(
$sql
,
$this
->conn);

}

function
findCount(
$sql
)

{

$result
=
$this
->execute(
$sql
);

return
mysql_num_rows(
$result
);

}

function
findBySql(
$sql
)

{

$array
=
array
();

$result
=mysql_query(
$sql
);

$i
=0;

while
(
$row
=mysql_fetch_assoc(
$result
))

{

$array
[
$i
]=
$row
;

$i
++;

}

return

$array
;

}

//$con的几种情况

//空：返回全部记录

//array：eg. array('id'=>'1') 返回id=1的记录

//string :eg. 'id=1' 返回id=1的记录

function
toExtJson(
$table
,
$start
=
"0"
,
$limit
=
"10"
,
$cons
=
""
)

{

$sql
=
$this
->generateSql(
$table
,
$cons
);

$totalNum
=
$this
->findCount(
$sql
);

$result
=
$this
->findBySql(
$sql
.
" LIMIT "
.
$start
.
" ,"
.
$limit
);

$resultNum
=
count
(
$result
);
//当前结果数

$str
=
""
;

$str
.=
"{"
;

$str
.=
"'totalCount':'$totalNum',"
;

$str
.=
"'rows':"
;

$str
.=
"["
;

for
(
$i
=0;
$i
<
$resultNum
;
$i
++){

$str
.=
"{"
;

$count
=
count
(
$result
[
$i
]);

$j
=1;

foreach
(
$result
[
$i
]
as

$key
=>
$val
)

{

if
(
$j
<
$count
)

{

$str
.=
"'"
.
$key
.
"':'"
.
$val
.
"',"
;

}

elseif
(
$j
==
$count
)

{

$str
.=
"'"
.
$key
.
"':'"
.
$val
.
"'"
;

}

$j
++;

}

$str
.=
"}"
;

if
(
$i
!=
$resultNum
-1) {

$str
.=
","
;

}

}

$str
.=
"]"
;

$str
.=
"}"
;

return

$str
;

}

function
generateSql(
$table
,
$cons
)

{

$sql
=
""
;
//sql条件

$sql
=
"select * from "
.
$table
;

if
(
$cons
!=
""
)

{

if
(
is_array
(
$cons
))

{

$k
=0;

foreach
(
$cons

as

$key
=>
$val
)

{

if
(
$k
==0)

{

$sql
.=
"where '"
;

$sql
.=
$key
;

$sql
.=
"'='"
;

$sql
.=
$val
.
"'"
;

}else

{

$sql
.=
"and '"
;

$sql
.=
$key
;

$sql
.=
"'='"
;

$sql
.=
$val
.
"'"
;

}

$k
++;

}

}else

{

$sql
.=
" where "
.
$cons
;

}

}

return

$sql
;

}

function
toExtXml(
$table
,
$start
=
"0"
,
$limit
=
"10"
,
$cons
=
""
)

{

$sql
=
$this
->generateSql(
$table
,
$cons
);

$totalNum
=
$this
->findCount(
$sql
);

$result
=
$this
->findBySql(
$sql
.
" LIMIT "
.
$start
.
" ,"
.
$limit
);

$resultNum
=
count
(
$result
);
//当前结果数

header("Content-Type: text/xml"
);

$xml
=
"<?xml version=/"1.0/" encoding=/"utf-8/" ?>/n"
;

$xml
.=
"<xml>/n"
;

$xml
.=
"/t<totalCount>"
.
$totalNum
.
"</totalCount>/n"
;

$xml
.=
"/t<items>/n"
;

for
(
$i
=0;
$i
<
$resultNum
;
$i
++){

$xml
.=
"/t/t<item>/n"
;

foreach
(
$result
[
$i
]
as

$key
=>
$val
)

$xml
.=
"/t/t/t<"
.
$key
.
">"
.
$val
.
"</"
.
$key
.
">/n"
;

$xml
.=
"/t/t</item>/n"
;

}

$xml
.=
"/t</items>/n"
;

$xml
.=
"</xml>/n"
;

return

$xml
;

}

//输出word表格

function
toWord(
$table
,
$mapping
,
$fileName
)

{

header('Content-type: application/doc'
);

header('Content-Disposition: attachment; filename="'
.
$fileName
.
'.doc"'
);

echo
'<html xmlns:o=
"urn:schemas-microsoft-com:office:office"

xmlns:w="urn:schemas-microsoft-com:office:word"

xmlns="http://www.w3.org/TR/REC-html40"
>

<head>

<meta http-equiv="Content-Type"
content=
"text/html; charset=UTF-8"
/>

<title>'.$fileName.'
</title>

</head>

<body>';

echo
'<table border=1><tr>'
;

if
(
is_array
(
$mapping
))

{

foreach
(
$mapping

as

$key
=>
$val
)

echo
'<td>'
.
$val
.
'</td>'
;

}

echo
'</tr>'
;

$results
=
$this
->findBySql(
'select * from '
.
$table
);

foreach
(
$results

as

$result
)

{

echo
'<tr>'
;

foreach
(
$result

as

$key
=>
$val
)

echo
'<td>'
.
$val
.
'</td>'
;

echo
'</tr>'
;

}

echo
'</table>'
;

echo
'</body>'
;

echo
'</html>'
;

}

function
toExcel(
$table
,
$mapping
,
$fileName
)

{

header("Content-type:application/vnd.ms-excel"
);

header("Content-Disposition:filename="
.
$fileName
.
".xls"
);

echo
'<html xmlns:o=
"urn:schemas-microsoft-com:office:office"

xmlns:x="urn:schemas-microsoft-com:office:excel"

xmlns="http://www.w3.org/TR/REC-html40"
>

<head>

<meta http-equiv="expires"
content=
"Mon, 06 Jan 1999 00:00:01 GMT"
>

<meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"
>



</head>

<body link=blue vlink=purple leftmargin=0 topmargin=0>';

echo
'<table width="100%" border="0" cellspacing="0" cellpadding="0">'
;

echo
'<tr>'
;

if
(
is_array
(
$mapping
))

{

foreach
(
$mapping

as

$key
=>
$val
)

echo
'<td>'
.
$val
.
'</td>'
;

}

echo
'</tr>'
;

$results
=
$this
->findBySql(
'select * from '
.
$table
);

foreach
(
$results

as

$result
)

{

echo
'<tr>'
;

foreach
(
$result

as

$key
=>
$val
)

echo
'<td>'
.
$val
.
'</td>'
;

echo
'</tr>'
;

}

echo
'</table>'
;

echo
'</body>'
;

echo
'</html>'
;

}

function
Backup(
$table
)

{

if
(
is_array
(
$table
))

{

$str
=
""
;

foreach
(
$table

as

$tab
)

$str
.=
$this
->get_table_content(
$tab
);

return

$str
;

}else
{

return

$this
->get_table_content(
$table
);

}

}

function
Backuptofile(
$table
,
$file
)

{

header("Content-disposition: filename=$file.sql"
);
//所保存的文件名

header("Content-type: application/octetstream"
);

header("Pragma: no-cache"
);

header("Expires: 0"
);

if
(
is_array
(
$table
))

{

$str
=
""
;

foreach
(
$table

as

$tab
)

$str
.=
$this
->get_table_content(
$tab
);

echo

$str
;

}else
{

echo

$this
->get_table_content(
$table
);

}

}

function
Restore(
$table
,
$file
=
""
,
$content
=
""
)

{

//排除file，content都为空或者都不为空的情况

if
((
$file
==
""
&&
$content
==
""
)||(
$file
!=
""
&&
$content
!=
""
))

echo
"参数错误"
;

$this
->truncate(
$table
);

if
(
$file
!=
""
)

{

if
(
$this
->RestoreFromFile(
$file
))

return
true;

else

return
false;

}

if
(
$content
!=
""
)

{

if
(
$this
->RestoreFromContent(
$content
))

return
true;

else

return
false;

}

}

//清空表，以便恢复数据

function
truncate(
$table
)

{

if
(
is_array
(
$table
))

{

$str
=
""
;

foreach
(
$table

as

$tab
)

$this
->execute(
"TRUNCATE TABLE $tab"
);

}else
{

$this
->execute(
"TRUNCATE TABLE $table"
);

}

}

function
get_table_content(
$table
)

{

$results
=
$this
->findBySql(
"select * from $table"
);

$temp
=
""
;

$crlf
=
"<br>"
;

foreach
(
$results

as

$result
)

{

$schema_insert
=
"INSERT INTO $table VALUES ("
;

foreach
(
$result

as

$key
=>
$val
)

{

if
(
$val
!=
""
)

$schema_insert
.=
" '"
.
addslashes
(
$val
).
"',"
;

else

$schema_insert
.=
"NULL,"
;

}

$schema_insert
=
ereg_replace
(
",$"
,
""
,
$schema_insert
);

$schema_insert
.=
");$crlf"
;

$temp
=
$temp
.
$schema_insert
;

}

return

$temp
;

}

function
RestoreFromFile(
$file
){

if
(false !== (
$fp
=
fopen
(
$file
,
'r'
))) {

$sql_queries
= trim(
fread
(
$fp
,
filesize
(
$file
)));

$this
->splitMySqlFile(
$pieces
,
$sql_queries
);

foreach
(
$pieces

as

$query
) {

if
(!
$this
->execute(trim(
$query
)))

return
false;

}

return
true;

}

return
false;

}

function
RestoreFromContent(
$content
)

{

$content
= trim(
$content
);

$this
->splitMySqlFile(
$pieces
,
$content
);

foreach
(
$pieces

as

$query
) {

if
(!
$this
->execute(trim(
$query
)))

return
false;

}

return
true;

}

function
splitMySqlFile(&
$ret
,
$sql
)

{

$sql
= trim(
$sql
);

$sql
=split(
';'
,
$sql
);

$arr
=
array
();

foreach
(
$sql

as

$sq
)

{

if
(
$sq
!=
""
);

$arr
[]=
$sq
;

}

$ret
=
$arr
;

return
true;

}

}

$db
=
new
db();

// 生成 word

//$map=array('No','Name','Email','Age');

//echo $db->toWord('test',$map,'档案');

// 生成 Excel

//$map=array('No','Name','Email','Age');

//echo $db->toExcel('test',$map,'档案');

// 生成 Xml

//echo $db->toExtXml('test',0,20);

// 生成 Json

//echo $db->toExtJson('test',0,20);

//备份

//echo $db->Backuptofile('test','backup');

?>

<?php class Db { var $conn; function Db($host="localhost",$user="root",$pass="root",$db="test") { if(!$this->conn=mysql_connect($host,$user,$pass)) die("can't connect to mysql sever"); mysql_select_db($db,$this->conn); mysql_query("SET NAMES 'UTF-8'"); } function execute($sql) { return mysql_query($sql,$this->conn); } function findCount($sql) { $result=$this->execute($sql); return mysql_num_rows($result); } function findBySql($sql) { $array=array(); $result=mysql_query($sql); $i=0; while($row=mysql_fetch_assoc($result)) { $array[$i]=$row; $i++; } return $array; } //$con的几种情况 //空：返回全部记录 //array：eg. array('id'=>'1') 返回id=1的记录 //string :eg. 'id=1' 返回id=1的记录 function toExtJson($table,$start="0",$limit="10",$cons="") { $sql=$this->generateSql($table,$cons); $totalNum=$this->findCount($sql); $result=$this->findBySql($sql." LIMIT ".$start." ,".$limit); $resultNum = count($result);//当前结果数 $str=""; $str.= "{"; $str.= "'totalCount':'$totalNum',"; $str.="'rows':"; $str.="["; for($i=0;$i<$resultNum;$i++){ $str.="{"; $count=count($result[$i]); $j=1; foreach($result[$i] as $key=>$val) { if($j<$count) { $str.="'".$key."':'".$val."',"; } elseif($j==$count) { $str.="'".$key."':'".$val."'"; } $j++; } $str.="}"; if ($i != $resultNum-1) { $str.= ","; } } $str.="]"; $str.="}"; return $str; } function generateSql($table,$cons) { $sql="";//sql条件 $sql="select * from ".$table; if($cons!="") { if(is_array($cons)) { $k=0; foreach($cons as $key=>$val) { if($k==0) { $sql.="where '"; $sql.=$key; $sql.="'='"; $sql.=$val."'"; }else { $sql.="and '"; $sql.=$key; $sql.="'='"; $sql.=$val."'"; } $k++; } }else { $sql.=" where ".$cons; } } return $sql; } function toExtXml($table,$start="0",$limit="10",$cons="") { $sql=$this->generateSql($table,$cons); $totalNum=$this->findCount($sql); $result=$this->findBySql($sql." LIMIT ".$start." ,".$limit); $resultNum = count($result);//当前结果数 header("Content-Type: text/xml"); $xml="<?xml version=/"1.0/" encoding=/"utf-8/" ?>/n"; $xml.="<xml>/n"; $xml.="/t<totalCount>".$totalNum."</totalCount>/n"; $xml.="/t<items>/n"; for($i=0;$i<$resultNum;$i++){ $xml.="/t/t<item>/n"; foreach($result[$i] as $key=>$val) $xml.="/t/t/t<".$key.">".$val."</".$key.">/n"; $xml.="/t/t</item>/n"; } $xml.="/t</items>/n"; $xml.="</xml>/n"; return $xml; } //输出word表格 function toWord($table,$mapping,$fileName) { header('Content-type: application/doc'); header('Content-Disposition: attachment; filename="'.$fileName.'.doc"'); echo '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>'.$fileName.'</title> </head> <body>'; echo'<table border=1><tr>'; if(is_array($mapping)) { foreach($mapping as $key=>$val) echo'<td>'.$val.'</td>'; } echo'</tr>'; $results=$this->findBySql('select * from '.$table); foreach($results as $result) { echo'<tr>'; foreach($result as $key=>$val) echo'<td>'.$val.'</td>'; echo'</tr>'; } echo'</table>'; echo'</body>'; echo'</html>'; } function toExcel($table,$mapping,$fileName) { header("Content-type:application/vnd.ms-excel"); header("Content-Disposition:filename=".$fileName.".xls"); echo'<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="expires" content="Mon, 06 Jan 1999 00:00:01 GMT"> <meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <!--[if gte mso 9]><xml> <x:ExcelWorkbook> <x:ExcelWorksheets> <x:ExcelWorksheet> <x:Name></x:Name> <x:WorksheetOptions> <x:DisplayGridlines/> </x:WorksheetOptions> </x:ExcelWorksheet> </x:ExcelWorksheets> </x:ExcelWorkbook> </xml><![endif]--> </head> <body link=blue vlink=purple leftmargin=0 topmargin=0>'; echo'<table width="100%" border="0" cellspacing="0" cellpadding="0">'; echo'<tr>'; if(is_array($mapping)) { foreach($mapping as $key=>$val) echo'<td>'.$val.'</td>'; } echo'</tr>'; $results=$this->findBySql('select * from '.$table); foreach($results as $result) { echo'<tr>'; foreach($result as $key=>$val) echo'<td>'.$val.'</td>'; echo'</tr>'; } echo'</table>'; echo'</body>'; echo'</html>'; } function Backup($table) { if(is_array ($table)) { $str=""; foreach($table as $tab) $str.=$this->get_table_content($tab); return $str; }else{ return $this->get_table_content($table); } } function Backuptofile($table,$file) { header("Content-disposition: filename=$file.sql");//所保存的文件名 header("Content-type: application/octetstream"); header("Pragma: no-cache"); header("Expires: 0"); if(is_array ($table)) { $str=""; foreach($table as $tab) $str.=$this->get_table_content($tab); echo $str; }else{ echo $this->get_table_content($table); } } function Restore($table,$file="",$content="") { //排除file，content都为空或者都不为空的情况 if(($file==""&&$content=="")||($file!=""&&$content!="")) echo"参数错误"; $this->truncate($table); if($file!="") { if($this->RestoreFromFile($file)) return true; else return false; } if($content!="") { if($this->RestoreFromContent($content)) return true; else return false; } } //清空表，以便恢复数据 function truncate($table) { if(is_array ($table)) { $str=""; foreach($table as $tab) $this->execute("TRUNCATE TABLE $tab"); }else{ $this->execute("TRUNCATE TABLE $table"); } } function get_table_content($table) { $results=$this->findBySql("select * from $table"); $temp = ""; $crlf="<br>"; foreach($results as $result) { $schema_insert = "INSERT INTO $table VALUES ("; foreach($result as $key=>$val) { if($val != "") $schema_insert .= " '".addslashes($val)."',"; else $schema_insert .= "NULL,"; } $schema_insert = ereg_replace(",$", "", $schema_insert); $schema_insert .= ");$crlf"; $temp = $temp.$schema_insert ; } return $temp; } function RestoreFromFile($file){ if (false !== ($fp = fopen($file, 'r'))) { $sql_queries = trim(fread($fp, filesize($file))); $this->splitMySqlFile($pieces, $sql_queries); foreach ($pieces as $query) { if(!$this->execute(trim($query))) return false; } return true; } return false; } function RestoreFromContent($content) { $content = trim($content); $this->splitMySqlFile($pieces, $content); foreach ($pieces as $query) { if(!$this->execute(trim($query))) return false; } return true; } function splitMySqlFile(&$ret, $sql) { $sql= trim($sql); $sql=split(';',$sql); $arr=array(); foreach($sql as $sq) { if($sq!=""); $arr[]=$sq; } $ret=$arr; return true; } } $db=new db(); // 生成 word //$map=array('No','Name','Email','Age'); //echo $db->toWord('test',$map,'档案'); // 生成 Excel //$map=array('No','Name','Email','Age'); //echo $db->toExcel('test',$map,'档案'); // 生成 Xml //echo $db->toExtXml('test',0,20); // 生成 Json //echo $db->toExtJson('test',0,20); //备份 //echo $db->Backuptofile('test','backup'); ?>

整表备份

Php代码

$link
= mysql_connect(DB_HOST,DB_USER,DB_PASS);

$tables
= mysql_list_tables(DB_NAME);

$cachetables
=
array
();
$tableselected
=
array
();

while
(
$table
= mysql_fetch_row(
$tables
))

{

$cachetables
[
$table
[0]] =
$table
[0];

$tableselected
[
$table
[0]] = 1;

}

$table
=
$cachetables
;

$filename
= DB_NAME .
"_"
.
date
(
"Y_m_d_H_i_s"
) .
".sql"
;

$path
=
"sql/"
.
$filename
;

$filehandle
=
fopen
(
$path
,
"w"
);

$result
= mysql_query(
"SHOW tables"
);

while
(
$currow
= mysql_fetch_array(
$result
))

{

if
(isset(
$table
[
$currow
[0]]))

{

sqldumptable($currow
[0],
$filehandle
);

fwrite($filehandle
,
"/n/n/n"
);

}

}

fclose($filehandle
);

$update_data
=
array
(
'filename'
=>
$filename
,
'postdate'
=>
mktime
());

$db
->insert(
'backup_db'
,
$update_data
);

// data dump functions

function
sqldumptable(
$table
,
$fp
= 0)

{

$tabledump
=
"DROP TABLE IF EXISTS "
.
$table
.
";/n"
;

$result
= mysql_fetch_array(mysql_query(
"SHOW CREATE TABLE "
.
$table
));

//echo "SHOW CREATE TABLE $table";

$tabledump
.=
$result
[1] .
";/r/n"
;

if
(
$fp
) {

fwrite($fp
,
$tabledump
);

} else
{

echo

$tabledump
;

}

// get data

$rows
= mysql_query(
"SELECT * FROM "
.
$table
);

// $numfields=$DB->num_fields($rows);

$numfields
= mysql_num_fields(
$rows
);

while
(
$row
= mysql_fetch_array(
$rows
)) {

$tabledump
=
"INSERT INTO "
.
$table
.
" VALUES("
;

$fieldcounter
= -1;

$firstfield
= 1;

// get each field's data

while
(++
$fieldcounter
<
$numfields
) {

if
(!
$firstfield
) {

$tabledump
.=
", "
;

} else
{

$firstfield
= 0;

}

if
(!isset(
$row
[
$fieldcounter
])) {

$tabledump
.=
"NULL"
;

} else
{

$tabledump
.=
"'"
. mysql_escape_string(
$row
[
$fieldcounter
]) .
"'"
;

}

}

$tabledump
.=
");/n"
;

if
(
$fp
) {

fwrite($fp
,
$tabledump
);

} else
{

echo

$tabledump
;

}

}

mysql_free_result($rows
);

}

$link = mysql_connect(DB_HOST,DB_USER,DB_PASS); $tables = mysql_list_tables(DB_NAME); $cachetables = array(); $tableselected = array(); while ($table = mysql_fetch_row($tables)) { $cachetables[$table[0]] = $table[0]; $tableselected[$table[0]] = 1; } $table = $cachetables; $filename = DB_NAME . "_" . date("Y_m_d_H_i_s") . ".sql"; $path = "sql/" . $filename; $filehandle = fopen($path, "w"); $result = mysql_query("SHOW tables"); while ($currow = mysql_fetch_array($result)) { if (isset($table[$currow[0]])) { sqldumptable($currow[0], $filehandle); fwrite($filehandle, "/n/n/n"); } } fclose($filehandle); $update_data = array('filename' => $filename, 'postdate' => mktime()); $db->insert('backup_db', $update_data); // data dump functions function sqldumptable($table, $fp = 0) { $tabledump = "DROP TABLE IF EXISTS " . $table . ";/n"; $result = mysql_fetch_array(mysql_query("SHOW CREATE TABLE " . $table)); //echo "SHOW CREATE TABLE $table"; $tabledump .= $result[1] . ";/r/n"; if ($fp) { fwrite($fp, $tabledump); } else { echo $tabledump; } // get data $rows = mysql_query("SELECT * FROM " . $table); // $numfields=$DB->num_fields($rows); $numfields = mysql_num_fields($rows); while ($row = mysql_fetch_array($rows)) { $tabledump = "INSERT INTO " . $table . " VALUES("; $fieldcounter = -1; $firstfield = 1; // get each field's data while (++$fieldcounter < $numfields) { if (!$firstfield) { $tabledump .= ", "; } else { $firstfield = 0; } if (!isset($row[$fieldcounter])) { $tabledump .= "NULL"; } else { $tabledump .= "'" . mysql_escape_string($row[$fieldcounter]) . "'"; } } $tabledump .= ");/n"; if ($fp) { fwrite($fp, $tabledump); } else { echo $tabledump; } } mysql_free_result($rows); }

导入数据库

Php代码

<?php

$file_dir
= dirname(
__FILE__
);

$file_name
=
"2010-05-09-bak.sql"
;

$conn
= mysql_connect(DB_HOST,DB_USER,DB_PASS);

mysql_select_db(DB_NAME, $conn
);

$get_sql_data
=
file_get_contents
(
$file_name
,
$file_dir
);

$explode
=
explode
(
";"
,
$get_sql_data
);

$cnt
=
count
(
$explode
);

for
(
$i
=0;
$i
<
$cnt
;
$i
++)

{

$sql
=
$explode
[
$i
];

$result
= mysql_query(
$sql
);

mysql_query("set names 'utf8'"
);

if
(
$result
) {

echo

"成功:"
.
$i
.
"个查询<br>"
;

} else
{

echo

"导入失败:"
.mysql_error();

}

}

?>

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