Question

我已经从MySQL

选择一些行，我想的话

这样间把下划线：

<?php 
$query='SELECT * FROM subcates WHERE maincates_id=1'; 
$result=mysql_query($query); 
while($row=mysql_fetch_array($result, MYSQL_ASSOC)){ 
    echo "<li><a href='".$row['name'].".php?c=".$row['id']."&gov=1&h=1'>".$row['name']."</a></li>";  
} 
?> 

我想选择时的名称给我这样的：在

database ==> first second

我想要它时selected ==> first_second

THX

Answer 1

尝试：

//Considering its the $row['name'] that you want in first_second format 
while($row=mysql_fetch_array($result, MYSQL_ASSOC)){ 
    $row['name'] = str_replace(' ', '_', $row['name']); 
    echo "<li><a href='".$row['name'].".php?c=".$row['id']."&gov=1&h=1'>".$row['name']."</a></li>"; 

}

编辑：

$query='SELECT * FROM subcates WHERE maincates_id=1'; 
    $result = mysql_query($query); 
    while($row=mysql_fetch_array($result, MYSQL_ASSOC)){ 
    if(current($result) === 'First second') { 
    $new_name = str_replace(' ', '_', $row['name']); 
    echo "<li><a href='".$new_name.".php?c=".$row['id']."&gov=1&h=1'>".$new_name." </a></li>"; 
} 
    else   
    echo "<li><a href='".$row['name'].".php?=".$row['id']."&gov=1&h=1'>".$row['name']." </a></li>";  
} 

Answer 2

如果你想要做的就是用下划线替换空间，运行

str_replace(" ","_",$row["name"])。见http://php.net/manual/en/function.str-replace.php。