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MySQLµÄ»ù±¾¹¤×÷²½Öè
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$link = mysql_connect("localhost", "mysql_user", "mysql_password");
´Ë´¦µÄ$link±äÁ¿ÔÚmysql µÄº¯ÊýÓï·¨¸ñʽÒÔ¡¾resource link_identifier¡¿´Ëresource ±í±äÁ¿µÄÐÍʽ¡£
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$link = mysql_connect("localhost", "mysql_user", "mysql_password");
mysql_select_db( ¡°myDataBase¡±, $link);
// $link ¿ÉÊ¡ÂÔ
»ò
mysql_select_db( ¡°myDataBase¡±);
»ò
$myDB = ¡°myDataBase¡±;
mysql_select_db( $myDB);
²½ÖèÈý:ʹÓÃ[url=http://bbs.zzchn.com/post.php?action=newthread&fid=10&extra=page%3D1#mysql_q[wiki]UE[/wiki]ry]mysql_query()[/url]º¯Êý£¬À´Ö´Ðи÷ÖÖ[wiki]Êý¾Ý¿â[/wiki]µÄ²Ù×÷¡£²Ù×÷µÄÄÚÈÝÒÔSQLÓïÑÔ±íÖ®¡£
ÈçÏÔʾ²½ÖèÖÐÖ¸¶¨µÄÊý¾Ý¿âÖеÄijһ±í¸ñ(myTable)ÖÐËùÓеÄÄÚÈÝ¡£
$result = mysql_query (¡°SELECT * from myTable¡±);
$resultΪһָÕëÖ¸Ïò¹¤×÷½á¹ûÇø£¨¹¤×÷±í¸ñ£©£¬ÔÚmysql µÄº¯ÊýÓï·¨¸ñʽÒÔ¡¾resource result¡¿´Ëresource ±í±äÁ¿µÄÐÍʽ¡£
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$result = mysql_query("SELECT * FROM table1", $link);
$rows = mysql_fetch_array($result);
echo "$rows[¡°name¡±], $rows[¡°sex¡±] \n";
²½ÖèÎå:ʹÓÃmysql_free_resultº¯Êý£¬Êͷʤ×÷½á¹ûÇøµÄÄÚ´æ[wiki]¿Õ¼ä[/wiki]¡£
| <?php $result = mysql_query (¡°SELECT * from myTable¡±); mysql_free_result($result);?> | ²½ÖèÁù:ʹÓÃmysql_closeº¯Êý£¬¹Ø±ÕºÍËÅ·þ»úÁ¬½á¡£
<?php
$link = mysql_connect("localhost", "mysql_user", "mysql_password")
or exit("Could not connect");
print ("Connected successfully");
mysql_close($link);?> |
mysql_close¹Ø±Õ MySQL ·þÎñÆ÷Áª»ú¡£
Óï·¨:bool mysql_close ( [resource link_identifier])
´«»ØÖµ:²¼¶û±äÊýÖµ(Boolean)
³É¹¦»Ø´« TRUE
ʧ°Ü»Ø´« FALSE
ÄÚÈÝ˵Ã÷±¾º¯Ê½¹Ø±ÕÓë MySQL Êý¾Ý¿â·þÎñÆ÷µÄÁª»ú¡£ÈôÎÞÖ¸¶¨²ÎÊý link_identifier Ôò»á¹Ø±Õ×îºóµÄÒ»±ÊÁª»ú¡£Óà mysql_pconnect() Áª»úÔòÎÞ·¨Ê¹Óñ¾º¯Ê½¹Ø±Õ¡£Êµ¼ÊÉϱ¾º¯Ê½²»ÊÇÒ»¶¨ÐèÒªµÄ£¬µ± PHP ÕûÒ³[wiki]³ÌÐò[/wiki]½áÊøºó£¬½«»á×Ô¶¯¹Ø±ÕÓëÊý¾Ý¿âµÄ·ÇÓÀ¾ÃÐÔ (non-persistent) Áª»ú¡£³É¹¦´«»Ø true¡¢Ê§°Ü´«»Ø false Öµ¡£
ʹÓ÷¶Àý<?php
$link = mysql_connect("localhost", "mysql_user", "mysql_password")
or exit("Could not connect");
print ("Connected successfully");
mysql_close($link);?> | ²Î¿¼mysql_connect()
mysql_connect½¨Á¢ºÍ MySQL ·þÎñÆ÷¼äµÄÁª»ú¡£
Óï·¨:resource mysql_connect(string [hostname] [:port], string [use[wiki]RNA[/wiki]me],
string [password]);
´«»ØÖµ:·þÎñÆ÷µÄÐŵÀÖ¸Õ룬Óï·¨ÒÔ¡¸resource link_identifier¡¹±íʾ֮¡£
ÄÚÈÝ˵Ã÷±¾º¯Ê½½¨Á¢Óë MySQL ·þÎñÆ÷µÄÁª»ú¡£ÆäÖÐËùÓеIJÎÊý¶¼¿ÉÊ¡ÂÔ¡£µ±Ê¹Óñ¾º¯Ê½È´²»¼ÓÈκβÎÊýʱ£¬²ÎÊý hostname µÄÄÚ¶¨ÖµÎª localhost¡¢²ÎÊý username µÄÄÚ¶¨ÖµÎª PHP Ö´ÐÐÐг̵ÄÓµÓÐÕß¡¢²ÎÊý password ÔòΪ¿Õ×Ö·û´® (¼´Ã»ÓÐÃÜÂë)¡£¶ø²ÎÊý hostname ºóÃæ¿ÉÒÔ¼ÓðºÅÓ벺º[wiki]Å£[/wiki]¬´ú±íʹÓÃÄǸö²ºÓë MySQL Á¬½Ó¡£µ±È»ÔÚʹÓÃÊý¾Ý¿âʱ£¬ÔçµãʹÓà mysql_close() ½«Áª»ú¹Øµô¿ÉÒÔ½ÚÊ¡×ÊÔ´¡£
ʹÓ÷¶Àý<?php
$link = mysql_connect("localhost", "mysql_user", "mysql_password")
or die("Could not connect");
print ("Connected successfully");
mysql_close($link);?> |
$Database = ¡°myDatadase¡±;
mysql_connect ("localhost", "kh", "75kh07");
$db = mysql_select_db( $Database );
if ( ! $db ) {
echo "ÎÞ·¨¿ªÆôÊý¾Ý¿â!";
exit;
}
ÕâÊÇһλδ¾ßÃûÍøÓÑÌṩµÄ·¶Àý (18-Feb-1999)
<?php
$dbh =
mysql_connect('localhost:3306','mcclain','standard');
mysql_select_db('admreqs');
$query = "insert into requests(date, request, email, priority,status) values (NOW(),'$description', '$email', '$priority', 'NEW')";
$res = mysql_query($query, $dbh);
$query = "select max(id) from requests";
$res = mysql_query($query, $dbh);
$err = mysql_error();
if($err){
echo "·¢Éú´íÎó£¬Çë֪ͨ<a href=mailto:webmaster@my.site>Õ¾³¤</a>";
}
$row = mysql_fetch_row($res);
echo "δÀ´ÄúʹÓõĺÅÂëΪ: ".$row[0];
?>
²Î¿¼mysql_close()
mysql_errno´«»ØÇ°Ò» MySQL ²Ù×÷µÄ´íÎóѶϢµÄ´úÂ롣ǰһ MySQL ²Ù×÷²»º¬mysql_error() and mysql_errno()¶þº¯Êý¡£
Óï·¨:int mysql_errno ( [resource link_identifier])
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ǰһMySQL º¯Êý×÷ÒµÕý³£Ê±£¬´«»Ø0¡£
ʹÓ÷¶Àý<?php
mysql_connect("localhost", "mysql_user", "mysql_password");
mysql_select_db("nonexistentdb");
echo mysql_errno() . ": " . mysql_error(). "\n";
mysql_select_db("kossu");
mysql_query("SELECT * FROM nonexistenttable");
echo mysql_errno() . ": " . mysql_error() . "\n";?> | ÉÏÊö°¸ÀýµÄÊä³öΪ£º
| 1049: Unknown database 'nonexistentdb'1146: Table 'kossu.nonexistenttable' doesn't exist |
mysql_error´«»ØÇ°MySQL¹¤×÷µÄ´íÎóѶϢÄÚÈÝ¡£Ç°Ò» MySQL ²Ù×÷²»º¬mysql_error() and mysql_errno()¶þº¯Êý¡£
Óï·¨:string mysql_error ( [resource link_identifier])
´«»ØÖµ:ǰһMySQL º¯Êý×÷Òµ´íÎóʱ£¬´«»Ø´íÎóѶϢµÄÄÚÈÝ¡£
ǰһMySQL º¯Êý×÷ÒµÕý³£Ê±£¬´«»Ø¿Õ×Ö·û´®¡£
ʹÓ÷¶Àý<?php
mysql_connect("localhost", "mysql_user", "mysql_password");
mysql_select_db("nonexistentdb");
echo mysql_errno() . ": " . mysql_error(). "\n";
mysql_select_db("kossu");
mysql_query("SELECT * FROM nonexistenttable");
echo mysql_errno() . ": " . mysql_error() . "\n";?> | ÉÏÊö°¸ÀýµÄÊä³öΪ£º
| 1049: Unknown database 'nonexistentdb'1146: Table 'kossu.nonexistenttable' doesn't exist |
mysql_fetch_array´«»ØÊý×éÊý¾Ý¡£ÒÔÊý¾Ý¿âµÄ×Ö¶ÎÃû³ÆÎªË÷ÒýÖµ¡£
Óï·¨:array mysql_fetch_array(int result, int [result_typ]);
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ÄÚÈÝ˵Ã÷±¾º¯Ê½ÓÃÀ´½«²éѯ½á¹û result ²ðµ½Êý×é±äÁ¿ÖС£Èô result ûÓÐ×ÊÁÏ£¬Ôò´«»Ø false Öµ¡£¶ø±¾º¯Ê½¿ÉÒÔ˵ÊÇ mysql_fetch_row() µÄ¼ÓÇ¿º¯Ê½£¬³ý¿ÉÒÔ½«´«»ØÁм°Êý×ÖË÷Òý·ÅÈëÊý×éÖ®Í⣬»¹¿ÉÒÔ½«ÎÄ×ÖË÷Òý·ÅÈëÊý×éÖС£ÈôÊǺü¸¸ö´«»Ø×ֶζ¼ÊÇÏàͬµÄÎÄ×ÖÃû³Æ£¬Ôò×îºóÒ»¸öÖÃÈëµÄ×Ö¶ÎÓÐЧ£¬½â¾ö·½·¨ÊÇʹÓÃÊý×ÖË÷Òý»òÕßΪÕâЩͬÃûµÄ×Ö¶Î (column) È¡±ðÃû (alias)¡£ÖµµÃ×¢ÒâµÄÊÇʹÓñ¾º¯Ê½µÄ´¦Àí[wiki]ËÙ¶È[/wiki]Æäʵ²»»á±È mysql_fetch_row() º¯Ê½Âý£¬ÒªÓÃÄĸöº¯Ê½»¹ÊÇ¿´Ê¹ÓõÄ[wiki]ÐèÇó[/wiki]¾ö¶¨¡£²ÎÊý result_typ ÊÇÒ»¸ö³£ÊýÖµ£¬ÓÐÒÔϼ¸ÖÖ³£Êý MYSQL_ASSOC¡¢MYSQL_NUM Óë MYSQL_BOTH¡£
ʹÓ÷¶Àý<?php
mysql_connect($host,$user,$password);
$result = mysql_db_query("database","select * from table");
while($row = mysql_fetch_array($result)) {
echo $row["user_id"];
echo $row["fullname"];
}
mysql_free_result($result);
?>
| <?php $link = mysql_connect("localhost", "mysql_user", "mysql_password");mysql_select_db("database", $link); $result = mysql_query("SELECT * FROM table1", $link);$rows = mysql_fetch_array($result); echo "$rows[¡°name¡±], $rows[¡°sex¡±] \n"; ?> |
mysql_fetch_row´«»Øµ¥Áеĸ÷×ֶΡ£ÒÔÊý×ÖΪË÷ÒýÖµ²¢ÓÉ 0 ¿ªÊ¼Æð¡£
Óï·¨: array mysql_fetch_row(int result);
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ʹÓ÷¶Àý
<?php
mysql_connect($host,$user,$password);
$result = mysql_db_query("database","select * from table");
while($row = mysql_fetch_row($result)) {
echo $row[0];
echo $row[1];
}
mysql_free_result($result);
?>
| <?php $link = mysql_connect("localhost", "mysql_user", "mysql_password");mysql_select_db("database", $link); $result = mysql_query("SELECT * FROM table1", $link);$num_rows = mysql_fetch_rows($result); echo "$rows[0], $rows[1] \n"; ?> |
²Î¿¼mysql_fetch_array() [url=http://bbs.zzchn.com/ÕZÑÔÊÖƒÔphpphp-ÖÐÎÄ•øebook1function.php-mysql_fetch_[wiki]object[/wiki].htm]mysql_fetch_object()[/url] mysql_data_seek() mysql_fetch_lengths() mysql_result()
mysql_free_resultÊͷʤ×÷½á¹ûÇøµÄÄÚ´æ¿Õ¼ä¡£
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ÊͷźÍresultʶ±ðÏà¹ØµÄÄÚ´æ¿Õ¼ä¡£
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mysql_insert_id
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ʹÓ÷¶Àý<?php
mysql_connect("localhost", "mysql_user", "mysql_password") or
die("could not connect");
mysql_select_db("mydb");
mysql_query("INSERT INTO mytable (product) values ('kossu')");
printf ("Last inserted record has id %d\n", mysql_insert_id());?> |
mysql_list_fields
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Óï·¨:int mysql_list_fields(string database_name, string table_name, int [link_identifier]);
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int mysql_num_rows(int result);
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| <?php $link = mysql_connect("localhost", "mysql_user", "mysql_password");mysql_select_db("database", $link); $result = mysql_query("SELECT * FROM table1", $link);$num_rows = mysql_num_rows($result); echo "$num_rows Rows\n"; ?> |
mysql_queryËͳöÒ»¸ö query ×Ö·û´®£¬¸øMySQL¶ÔÏÖÓõÄÊý¾Ý¿âÖ´ÐÐ×÷Òµ¡£
Óï·¨:resource mysql_query ( string query [, resource link_identifier [, int result_mode]])
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2.
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<php$result = mysql_query("SELECT * WHERE 1=1")
or die("Invalid query");?> |
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<?php$result = mysql_query("SELECT my_col FROM my_tbl")
or die ("Invalid query");?> |
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