通过数组的PHP循环 [英] Loop through an array php
本文介绍了通过数组的PHP循环的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有这个阵......你怎么打印每个文件路径和文件名？什么是做到这一点的最好方法是什么？
阵列（
[0] =＆GT;阵列（
[FID] =＆GT; 14
[名单] =＆GT; 1
[数据] =＆GT;阵列（
[ALT] =＆GT;
[标题] =＆GT;
）
[UID] =＆GT; 1
[文件名] =＆GT; trucks_10785.jpg
[文件路径] =＆GT;网站/默认/文件/ trucks_10785.jpg
[filemime] =＆GT;图像/ JPEG
[文件大小] =＆GT; 143648
[现状] =＆GT; 1
[时间戳] =＆GT; 1291424171
[NID] =＆GT; 8
）
[1] =＆GT;阵列（
[FID] =＆GT; 19
[名单] =＆GT; 1
[数据] =＆GT;阵列（
[ALT] =＆GT;
[标题] =＆GT;
）
[UID] =＆GT; 1
[文件名] =＆GT; school.jpg
[文件路径] =＆GT;网站/默认/文件/ school.jpg
[filemime] =＆GT;图像/ JPEG
[文件大小] =＆GT; 115355
[现状] =＆GT; 1
[时间戳] =＆GT; 1292029563
[NID] =＆GT; 8
）
[2] =＆GT;阵列（
[FID] =＆GT; 20
[名单] =＆GT; 1
[数据] =＆GT;阵列（
[ALT] =＆GT;
[标题] =＆GT;
）
[UID] =＆GT; 1
[文件名] =＆GT; Life_is_wonderful_by_iNeedChemicalX.jpg
[文件路径] =＆GT;网站/默认/文件/ Life_is_wonderful_by_iNeedChemicalX_0.jpg
[filemime] =＆GT;图像/ JPEG
[文件大小] =＆GT; 82580
[现状] =＆GT; 1
[时间戳] =＆GT; 1292029572
[NID] =＆GT; 8
）
[3] =＆GT;阵列（
[FID] =＆GT; 21
[名单] =＆GT; 1
[数据] =＆GT;阵列（
[ALT] =＆GT;
[标题] =＆GT;
）
[UID] =＆GT; 1
[文件名] =＆GT; school_rural.jpg
[文件路径] =＆GT;网站/默认/文件/ school_rural.jpg
[filemime] =＆GT;图像/ JPEG
[文件大小] =＆GT; 375088
[现状] =＆GT; 1
[时间戳] =＆GT; 1292029582
[NID] =＆GT; 8
）
）
解决方案
使用的foreach 循环无钥匙
的foreach（$数组作为$项目）{
回声$项目['名'];
回声$项目['文件路径']; //知道什么是在$项目
呼应'＆LT; pre＆GT;';后续代码var_dump（$项目）;
}
与使用的foreach 循环键
的foreach（$数组作为$ I =＆GT; $项）{
回声$阵列[$ i] ['名'];
回声$阵列[$ i] ['文件路径']; // $阵列[$ i]为与$项目
}
使用为循环
为（$ I = 0; $ I＆LT;计数（$数组）; $ I ++）{
回声$阵列[$ i] ['名'];
回声$阵列[$ i] ['文件路径'];
}
的var_dump 是一个非常有用的功能来获得一个数组或对象的快照。
I have this array... how do you print each of the filepath and filename? What is the best way to do this?
Array (
[0] => Array (
[fid] => 14
[list] => 1
[data] => Array (
[alt] =>
[title] =>
)
[uid] => 1
[filename] => trucks_10785.jpg
[filepath] => sites/default/files/trucks_10785.jpg
[filemime] => image/jpeg
[filesize] => 143648
[status] => 1
[timestamp] => 1291424171
[nid] => 8
)
[1] => Array (
[fid] => 19
[list] => 1
[data] => Array (
[alt] =>
[title] =>
)
[uid] => 1
[filename] => school.jpg
[filepath] => sites/default/files/school.jpg
[filemime] => image/jpeg
[filesize] => 115355
[status] => 1
[timestamp] => 1292029563
[nid] => 8
)
[2] => Array (
[fid] => 20
[list] => 1
[data] => Array (
[alt] =>
[title] =>
)
[uid] => 1
[filename] => Life_is_wonderful_by_iNeedChemicalX.jpg
[filepath] => sites/default/files/Life_is_wonderful_by_iNeedChemicalX_0.jpg
[filemime] => image/jpeg
[filesize] => 82580
[status] => 1
[timestamp] => 1292029572
[nid] => 8
)
[3] => Array (
[fid] => 21
[list] => 1
[data] => Array (
[alt] =>
[title] =>
)
[uid] => 1
[filename] => school_rural.jpg
[filepath] => sites/default/files/school_rural.jpg
[filemime] => image/jpeg
[filesize] => 375088
[status] => 1
[timestamp] => 1292029582
[nid] => 8
)
)
解决方案
Using foreach loop without key
foreach($array as $item) {
echo $item['filename'];
echo $item['filepath'];
// to know what's in $item
echo '<pre>'; var_dump($item);
}
Using foreach loop with key
foreach($array as $i => $item) {
echo $array[$i]['filename'];
echo $array[$i]['filepath'];
// $array[$i] is same as $item
}
Using for loop
for ($i = 0; $i < count($array); $i++) {
echo $array[$i]['filename'];
echo $array[$i]['filepath'];
}
var_dump is a really useful function to get a snapshot of an array or object.
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