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二则PHP数组函数应用技巧 - 站长搜索
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二则PHP数组函数应用技巧

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">
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2014-12-13 22:30:52 转载来源: 网络整理/侵权必删

本文为大家提共了二个php对数据操作的方法示例,一个是从数据中删除空白的元素,一个是对数组生成hashmap的函数,感兴趣的同学参考下. /** * 从数组中删除空白的元素(包括只有空白字符的元素) * * @param array $arr * @param boolean $trim */ function array_remove_empty(& $arr, $trim = true) { foreach ($arr as $key => $value) { if (is_array($value)) { array_remove_empty($arr[$key]); } else { $value = trim($value); if ($value == '') { unset($arr[$key]); } elseif ($trim) { $arr[$key] = $value; } } } } /** * 将一个二维数组转换为 hashmap * * 如果省略 $val

本文为大家提共了二个php对数据操作的方法示例,一个是从数据中删除空白的元素,一个是对数组生成hashmap的函数,感兴趣的同学参考下.


/**
* 从数组中删除空白的元素(包括只有空白字符的元素)
*
* @param array $arr
* @param boolean $trim
*/


function array_remove_empty(& $arr, $trim = true)
{
foreach ($arr as $key => $value) {
if (is_array($value)) {
array_remove_empty($arr[$key]);
} else {
$value = trim($value);
if ($value == '') {
unset($arr[$key]);
} elseif ($trim) {
$arr[$key] = $value;
}
}
}
}


/**
* 将一个二维数组转换为 hashmap
*
* 如果省略 $valueField 参数,则转换结果每一项为包含该项所有数据的数组。
*
* @param array $arr
* @param string $keyField
* @param string $valueField
*
* @return array
*/

 

 

 

 

 


function array_to_hashmap(& $arr, $keyField, $valueField = null)
{
$ret = array();
if($valueField) {
foreach ($arr as $row) {
$ret[$row[$keyField]] = $row[$valueField];
}
} else {
foreach($arr as $row) {
$ret[$row[$keyField]] = $row;
}
}
return $ret;
}

 


标签: 二则 PHP 数组 函数 应用技巧


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