Question

php数组输出的时候.用逗号分隔..

$array = array('[0]'=>array('[aa]'=>'ss'),'[1]'=>array('[aa]'=>'bb'));
foreach($array as $var){
$because = 'where c_produce in ("'.$var['aa'].'")';
}

代码是这样 ,怎么将数组中的值插进去并用逗号分隔开来 ...

Answer 1

$array = array('0' => array('aa' => 'ss'), '1' => array('aa' => 'bb'));
$value = array();
foreach ($array as $var) {
$value[] = "'" . $var['aa'] . "'";
}
$because = 'where c_produce in (' . implode(',', $value) . ')';
echo $because;

Answer 2

$array = array('[0]'=>array('[aa]'=>'ss'),'[1]'=>array('[aa]'=>'bb'));
$because = "where c_produce in (";
foreach($array as $key=> $var){
$because .= $var['aa'].',';
}
$because =substr($because ,0 ,-1) . ")"; //去掉最后的逗号
是要这个样子吗？
问题描述不清楚啊

Answer 3

=》表示键值对的关系，比如 a=>'b' 表示数组元素a对应的值是b

数组元素的键值如果是字符串形式，可以使用单引号或者双引号括起来，不加也没啥