PHP连接MYSQL数据库,phpmysql数据库
因为前两天某项目需要PHP连接MySql,虽然以前学过,但是现在基本也忘得一干二净了,不过后来查找大量资料找到了方法:
<?<span>php </span><span>//</span><span>设置字符集</span> <span>header</span>('Content-Type: text/html; charset=utf8'<span>); </span><span>//</span><span>连接数据库</span> <span>$link</span> = <span>mysql_connect</span>("localhost","root","123456"<span>); </span><span>if</span>(!<span>$link</span><span>){ </span><span>echo</span> '数据库连接失败...<br>'<span>; </span><span>exit</span>(-1<span>); }</span><span>else</span><span>{ </span><span>echo</span> "数据库连接成功...<br>"<span>; } </span><span>//</span><span>选择一个数据库作为默认数据库</span> <span>mysql_select_db</span>('php_sjk'<span>); </span><span>//</span><span>执行sql插入语句</span> <span>$sql</span> = "INSERT INTO zh VALUES (NULL,'王杰','123456')"<span>; </span><span>$cr</span> = <span>mysql_query</span>(<span>$sql</span><span>); </span><span>//</span><span>判断是否插入成功</span> <span>if</span>(!<span>$cr</span><span>){ </span><span>echo</span> "数据插入失败。<br>"<span>; }</span><span>else</span><span>{ </span><span>echo</span> "数据插入成功。<br>"<span>; } </span><span>//</span><span>执行sql查询语句</span> <span>$sql</span> = "select * from zh"<span>; </span><span>$cr</span> = <span>mysql_query</span>(<span>$sql</span><span>); </span><span>//</span><span>得到返回的结果集,并循环输出</span> <span>echo</span> "数据展示:<br><br><br>"<span>; </span><span>while</span>(<span>$a</span> = <span>mysql_fetch_row</span>(<span>$cr</span><span>)){ </span><span>echo</span> "{<span>$a</span>[0]}——{<span>$a</span>[1]}——{<span>$a</span>[2]}<br>"<span>; } </span><span>//</span><span>关闭数据库连接</span> <span>mysql_close</span>(<span>$link</span><span>); </span>?>

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