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Homephp教程PHP源码php+mysql第一条数据无法显示的原因和解决方法

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php+mysql第一条数据无法显示的原因和解决方法

while($row=@mysql_fetch_row($result))”读取数据之前,已经使用“if(@mysql_fetch_row($result))”对有无符合条件的数据进行了一次判断,使指针指向了第二条数据。

  解决方法:判断有无符合条件的数据时,使用“if(@mysql_num_rows($result))”,代码如下:

if(@mysql_num_rows($result)){
 while($row=@mysql_fetch_row($result)){
  print_r($row);
 }
 mysql_free_result($result);
}else{
 echo "没有符合条件的数据";
}
?>

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