无法从cakephp中的多维数组中删除数组键

问题描述：

I want to delete array index which contain rating 0 here is my array

array(
    (int) 0 => array(
        'Gig' => array(
            'id' => '1',
            'rating' => (int) 5
        )
    ),
    (int) 1 => array(
        'Gig' => array(
            'id' => '3',
            'rating' => (int) 9
        )
    ),
    (int) 2 => array(
        'Gig' => array(
            'id' => '4',
            'rating' => '0'
        )
    )
)

and what I did

for($i = 0; $i<count($agetGigsItem); $i++)
{
if($agetGigsItem[$i]['Gig']['rating']==0)
{
unset($agetGigsItem[$i]);   
}
$this->set('agetGigsItem', $agetGigsItem);
}

i also try foreach loop but unable to resolve this issue.

foreach ($agetGigsItem as $key => $value) { 

    if ($value["Gig"]["rating"] == 0) { unset($agetGigsItem[$key]); }

}

我想删除包含等级0的数组索引这里是我的数组 p>

  array（
（int）0 =＆gt; array（
'Gig'=＆gt; array（
'id'=＆gt;'1'，
'rating'=＆gt;（int）  5 
）
），
（int）1 =＆gt;数组（
'Gig'=＆gt;数组（
'id'=＆gt;'3'，
'rating'=＆gt;（  int）9 
）
），
（int）2 =＆gt;数组（
'Gig'=＆gt;数组（
'id'=＆gt;'4'，
'rating'=＆gt;  ;'0'
）
）
）
  code>  pre> 
 
 我做了什么 p> 
 
 
  for（  $ i = 0; $ i＆lt; count（$ agetGigsItem）; $ i ++）
 {
if（$ agetGigsItem [$ i] ['Gig'] ['rating'] == 0）
 {
unset（$  agetGigsItem [$ I]）;  
} 
 $ this-＆gt; set（'agetGigsItem'，$ agetGigsItem）; 
} 
  code>  pre> 
 
 我也尝试使用foreach循环但无法解决此问题 问题。 p> 
 
 
  foreach（$ agetGigsItem as $ key =＆gt; $ value）{
 
 if（$ value [“Gig”] [“rating”] ==  0）{unset（$ agetGigsItem [$ key]）;  } 
 
} 
  code>  pre> 
  div>

答

I think you need to reupdate your array.

foreach ($agetGigsItem as $key => $value) {
if ($value["Gig"]["rating"] != 0) 
{
unset($agetGigsItem[$key]); 
}
$this->set('agetGigsItem', $agetGigsItem);
}

答

I hope you are missing $this and so you cannot access the array in CakePHP.

So try this:

foreach ($this->$agetGigsItem as $key => $value) { 
    if ($value["Gig"]["rating"] == 0) {
      unset($this->$agetGigsItem[$key]);
    }
}

答

This code will unset arrey index with value 0.

<?php

$array=array(
array(
    'Gig' => array(
        'id' => '1',
        'rating' =>5
    )
),
array(
    'Gig' => array(
        'id' => '3',
        'rating' =>9
    )
),
array(
    'Gig' => array(
        'id' => '4',
        'rating' =>0
    )
)
);

foreach($array as $a){

if($a['Gig']['rating']==0){

    unset($a['Gig']['rating']);

}

$array1[]=$a;

}

var_dump($array1);

答

Destroying occurances within an array you are actually processing over with a for or a foreach is always a bad idea. Each time you destroy an occurance the loop can easily get corrupted and get in a terrible mess.

If you want to remove items from an array it is better to create a copy of the array and process over that new array in the loop but remove the items from the original array.

So try this instead

$tmparray = $this->agetGigsItem;   // will copy agetGigsItem into new array

foreach ($tmparray as $key => $value) { 
    if ($value["Gig"]["rating"] == 0) { 
        unset($this->agetGigsItem[$key]); 
    }
}
unset($tmparray);

无法从cakephp中的多维数组中删除数组键

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