PHP数组表示
我有一个php数组,演示如下:-PHP数组表示,php,arrays,Php,Arrays,我有一个php数组,演示如下:- <?php $ads = array(); $ads [] = array( 'name' => 'Apple', 'duration' => '3', 'price' => "$5" ); $ads [] = array( 'name' => 'Orange', 'duration' => '2', 'price' => "$10" ); $ads
<?php
$ads = array();
$ads [] = array(
'name' => 'Apple',
'duration' => '3',
'price' => "$5"
);
$ads [] = array(
'name' => 'Orange',
'duration' => '2',
'price' => "$10"
);
$ads [] = array(
'name' => 'Banana',
'duration' => '5',
'price' => "$6"
);
实际上,我应该如何将这两个演示结合起来?谢谢 可以修改迭代结果(只要在查询中只获取所需的属性) 可能您可以使用
$result = array();
$result = array_merge($ads,$fruit);
如果希望获得与第一个示例中类似的结构,可以修改第二个示例以创建新数组,并将其附加到现有的
$ads
数组中
$sql = "SELECT * from tb_fruit order by fruit_id ASC";
$result = mysql_query($sql_approve, $conn_fruit);
$ads = array();
while($record = mysql_fetch_array($result))
{
$ads[] = array(
'name' => $record['fruit_name'],
'price' => $record['fruit_price'],
'duration' => $record['fruit_duration']);
}
那么,您想用数据库中的信息填充“ads”数组吗?mysql_fetch_数组已经返回了一个非常合适的关联数组,这似乎有点违反直觉,但现在您可以看到:
$sql = "SELECT * from tb_fruit order by fruit_id ASC";
$result = mysql_query($sql_approve, $conn_fruit);
$ads = array();
while($record = mysql_fetch_array($result))
{
$ads[] = array (
'name' => $record['fruit_name'],
'price' => $record['fruit_price'],
'duration' => $record['fruit_duration']
);
}
如果
$ads ['Apple'] = array(
'duration' => '3',
'price' => "$5"
);
$ads ['Orange'] = array(
'duration' => '2',
'price' => "$10"
);
$ads ['Banana'] = array(
'duration' => '5',
'price' => "$6"
);
$sql = "SELECT * from tb_fruit order by fruit_id ASC";
$result = mysql_query($sql_approve, $conn_fruit);
$ads = array();
while($record = mysql_fetch_array($result))
{
$ads[$record['fruit_name']]['price'] = $record['fruit_price'];
$ads[$record['fruit_name']]['duration'] = $record['fruit_duration'];
}
现在,如果数据库中有“Apple”,则价格和持续时间将被覆盖,否则,它将停留在查询前设置的位置
您可以更进一步,检查查询返回的价格和持续时间是否为空值(Null,“,0),并仅在该值不为空时设置该值,等等。但这更像是一个业务逻辑决策。如果您的表没有“动态数据”,这应该像“默认数据集”吗正如您所说的那样?请停止使用古老的
mysql.*
函数编写新代码。它们不再得到维护,社区已开始恢复。相反,您应该了解准备好的语句
,并使用或;我的密码有什么问题吗$doc=新的DOMDocument()$单据->格式输出=true$r=$doc->createElement(“ads”)$doc->appendChild($r);foreach($ads as$ad){$b=$doc->createElement(“ad”);$name=$doc->createElement(“name”);$name->appendChild($doc->createTextNode($ad['name']);$b->appendChild($duration=$doc->createElement(“duration”);$duration->appendChild($doc->createTextNode($ad['duration']);$b->appendChild($duration);$price=$doc->createElement(“price”);$price->appendChild($doc->createTextNode($ad['price']);$b->appendChild($price);$r->appendChild($b);}echo$doc->saveXML();$doc->save(“write.xml”)您可能想看看这个:还有这个
$sql = "SELECT * from tb_fruit order by fruit_id ASC";
$result = mysql_query($sql_approve, $conn_fruit);
$ads = array();
while($record = mysql_fetch_array($result))
{
$ads[] = array (
'name' => $record['fruit_name'],
'price' => $record['fruit_price'],
'duration' => $record['fruit_duration']
);
}
$ads ['Apple'] = array(
'duration' => '3',
'price' => "$5"
);
$ads ['Orange'] = array(
'duration' => '2',
'price' => "$10"
);
$ads ['Banana'] = array(
'duration' => '5',
'price' => "$6"
);
$sql = "SELECT * from tb_fruit order by fruit_id ASC";
$result = mysql_query($sql_approve, $conn_fruit);
$ads = array();
while($record = mysql_fetch_array($result))
{
$ads[$record['fruit_name']]['price'] = $record['fruit_price'];
$ads[$record['fruit_name']]['duration'] = $record['fruit_duration'];
}