有一文本,要导入数据库中,要用到PDO的写法
一年级:小明,小红,小……,小白
二年级:小A,小B,小C,……小Z
……
需要导入的数据表为
name,banji,other
小明 一年级 0
小红 一年级 0
………………
小A 二年级 0
………………也就是为每个名字带上所在的班级
这之前用PHP的就用了file_get_contents导入后用preg_replace替换换行为一分隔符
然后再array_filter排列后用foreach($arr as $value)的方式来导入
却发现用PDO的写不出来,请大家帮忙一下。
回复讨论(解决方案)
贴出你的不成功代码
贴出你的不成功代码
以下是只导入单独的文本,用PDO不知如何处理,PDO连接都对,但都没能成功导入
想用到预处理,可预处理只用于查询才有效率
$dao = file_get_contents(文本);$dao = preg_replace('/\n|\r\n/', '|', $dao);$arr = array_filter(explode('|', $dao));$arr = array_chunk($arr, 1000);foreach($arr as $value){ $string = ''; foreach($value as $v){ $string .= "('$v'),"; } $string = trim($string, ','); mysql_query("insert into biao VALUES " . $string); }
另外,顺便问一下大家,最近在写到PDO一分页的代码,有个问题:
A:把分页写成封装类,要用到的地方来调用
B:要用到的地方把分页代码复制过来加已修改
在 不考虑代码重复写入的话,是A还是B有效率( 程序的处理)?
你的每行数据形如这样 一年级:小明,小红,小……,小白
即 "('$v')," 形如这样 "('一年级:小明,小红,小……,小白'),"
表中至少有 3 列,所以 "insert into biao VALUES " . $string 这样的指令必定是失败的
你的每行数据形如这样 一年级:小明,小红,小……,小白
即 "('$v')," 形如这样 "('一年级:小明,小红,小……,小白'),"
表中至少有 3 列,所以 "insert into biao VALUES " . $string 这样的指令必定是失败的
版主你好,我写上注明了,这是单独个字段的导入,而且我这个单独字段导入的不会用PDO来写呀,
现在就是想知道用PDO是如何写入的还有如何拆分导入多个字段的写法
mysql 函数怎么写,PDO 就怎么写
$s =<<< TXT一年级:小明,小红,小,小白二年级:小A,小B,小C,小ZTXT;$ar = explode(PHP_EOL, $s);array_walk($ar, function(&$v) { $v = preg_split('/:|,/', $v);});//print_r($ar);//构建数据结束$db = new PDO('mysql:dbname=test', 'root', '');$db->query('set names gbk');$db->query("create temporary table biao (name varchar(10), banji varchar(10), other int) charset=gbk");$smt = $db->prepare("insert into biao values (?, ?, 0)");//数据库准备结束foreach($ar as $v) { $m = array_shift($v); foreach($v as $t) $smt->execute(array($t, $m));}//插入数据结束$r = $db->query("select * from biao")->fetchall(PDO::FETCH_ASSOC);print_r($r); //看一下结果
Array( [0] => Array ( [name] => 小明 [banji] => 一年级 [other] => 0 ) [1] => Array ( [name] => 小红 [banji] => 一年级 [other] => 0 ) [2] => Array ( [name] => 小 [banji] => 一年级 [other] => 0 ) [3] => Array ( [name] => 小白 [banji] => 一年级 [other] => 0 ) [4] => Array ( [name] => 小A [banji] => 二年级 [other] => 0 ) [5] => Array ( [name] => 小B [banji] => 二年级 [other] => 0 ) [6] => Array ( [name] => 小C [banji] => 二年级 [other] => 0 ) [7] => Array ( [name] => 小Z [banji] => 二年级 [other] => 0 ))
Parse error: syntax error, unexpected T_FUNCTION in
[/code]
怎么我本地测试都报错了?
... in 后面有行号,你自己看看是哪行
... in 后面有行号,你自己看看是哪行
array_walk($ar, function(&$v) {
$v = preg_split('/:|,/', $v);
});
就这一行报错 array_walk($ar, function(&$v) {
我看了一下,也没少括号……
那是你的 php 版本低于 5.3
不保护落后,自己去修改吧
那是你的 php 版本低于 5.3
不保护落后,自己去修改吧
PHP版本(php_version): 5.5.25
PHP Version 5.5.25
如果代码为改错,就贴出完整的错误信息
如果代码为改错,就贴出完整的错误信息
解决了,原来真的是本地的版本有问题,传到网上就可以了

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