I'm trying to loop an array from a database into an existing array. The two codes work well alone but I only get an error when trying to combine them.... for example...
The current array (which is a list of spammer databases) look as such...
$dnsbl_lookup=array(
"access.redhawk.org",
"all.s5h.net",
"blacklist.woody.ch",
);
While the array I am trying to add is as so...
$values = $myOptions['re_i_'];
foreach ($values as $value) {
echo '"'.$value['database'].'",';
}
And I end up with the following...
$dnsbl_lookup=array(
"access.redhawk.org",
"all.s5h.net",
"blacklist.woody.ch",
$values = $myOptions['re_i_'];
foreach ($values as $value) {
echo '"'.$value['database'].'",';
}
);
Which, of course, only returns an error. Does anyone know how to do this properly or if it is even possible?
It looks like you want to merge the $dnsbl_lookup values with the database column values in $myOptions, which you can do with array_merge and array_column:
$dnsbl_lookup = array(
"access.redhawk.org",
"all.s5h.net",
"blacklist.woody.ch"
);
$dnsbl_lookup = array_merge($dnsbl_lookup, array_column($myOptions['re_i_'], 'database'));
Demo on 3v4l.org
Related
I have an array of arrays, and I am trying to foreach loop through and insert new item into the sub arrays.
take a look below
$newarray = array(
array("id"=>1,"quantity"=>2),
array("id"=>1,"quantity"=>2),
array("id"=>1,"quantity"=>2),
);
foreach($newarray as $item){
$item["total"] = 9;
}
echo "<br>";
print_r($newarray);
The result just give me the original array without the new "total". Why ?
Because $item is not a reference of $newarray[$loop_index]:
foreach($newarray as $loop_index => $item){
$newarray[$loop_index]["total"] = 9;
}
The foreach() statement gives $item as an array: Not as the real value (consuming array). That meaning it can be read but not changed unless you then overwrite the consuming array.
You could use the for() and loop through like this: see demo.
Note: This goes all the way back to scopes, you should look into that.
I have an array like this:
Array(
[0]=>Array([uploaderName]=>x[uploadedImageName]=>k6gIjfO[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[1]=>Array([uploaderName]=>x[uploadedImageName]=>byUTyJo[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[2]=>Array([uploaderName]=>x[uploadedImageName]=>oSVEnNk[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[3]=>Array([uploaderName]=>x[uploadedImageName]=>Dj7GRYS[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[4]=>Array([uploaderName]=>x[uploadedImageName]=>upsb8IC[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[5]=>Array([uploaderName]=>x[uploadedImageName]=>YoEEzGi[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[6]=>Array([uploaderName]=>x[uploadedImageName]=>st3dLNs[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[7]=>Array([uploaderName]=>x[uploadedImageName]=>LBNpiIG[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[8]=>Array([uploaderName]=>x[uploadedImageName]=>mFYDmBG[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
[9]=>Array([uploaderName]=>x[uploadedImageName]=>z03kSx1[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
)
I want to get any image's data from this array.
Example: When user shows uploadedImageName == jCPjeWv, I wan't to get who is it's uploader.
Simple, just use foreach
$arr = array(/* content here */);
foreach($arr as $value){
if($value['uploadedImageName'] == 'jCPjeWv'){
echo $value['uploaderName'];
break;
}
}
Just for fun, here's another way:
echo array_column($array, 'uploaderName', 'uploadedImageName')['jCPjeWv'];
Get an array of uploaderName with the index set to uploadedImageName
Access the index using the uploadedImageName 'jCPjeWv'
Obviously to do it multiple times you would want to actually create a new array:
$images = array_column($array, 'uploaderName', 'uploadedImageName');
echo $images['jCPjeWv'];
If you want to access the other values as well, then use null instead of uploaderName:
$images = array_column($array, null, 'uploadedImageName');
echo $images['jCPjeWv']['uploaderName'];
echo $images['jCPjeWv']['uploaderIp'];
NOTE: These ways only work if the uploadedImageName is unique.
A foreach is possible, but I think it's important to learn the array functions as well so I'm just going to put this example here.
$uploadedImageName = 'jCPjeWv';
$filtered = array_filter($array, function($value) use ($uploadedImageName) {
return ($value['uploadedImageName'] == $uploadedImageName);
});
This will return a $filtered with the other arrays removed since their $value['uploadedImageName'] will not equal $uploadedImageName.
For more info check out the http://php.net/manual/en/function.array-filter.php manual.
I have an array called $brand_terms. I'm accessing two objects in this array. In this case 'name' and 'slug'. I'm then trying to set values of these objects in an associative array called $values. The code is below:
$brand_terms = get_terms("pa_brand");
$values = array(
foreach ($brand_terms as $brand_term){
$brand_term->name => $brand_$term->slug,
}
);
The problem I have is with the separator ,. So the comma at the end of $brand_term->name => $brand_$term->slug,. If the loop is at the last value in the array, the comma is not needed and the the code is broken. Is there a nice way to remove this comma from the last iteration of the foreach loop?
Thanks
That syntax is completely wrong. You cannot have a loop within an array declaration.
Instead create the array, then push elements into it during the loop:
$brand_terms = get_terms("pa_brand");
$values = array();
foreach ($brand_terms as $brand_term){
$values[$brand_term->name] = $brand_$term->slug;
}
Actually, the problem isn't at all with the , literal, in fact that isn't valid PHP. You can't have a foreach loop inside of an array declaration.
The best approach is to define the array and then loop through the get_terms() return value as follows:
$values = array();
foreach( get_terms('pa_brand') as $term )
{
$values[$term->name] = $term->slug;
}
While I map all the links on a page that is contained in an array, I want to check if each of the links is inserted in this array and, if not, insert it.
I'm trying to use the code bellow without success because "foreach $arr" doesn't pass by in the new values.
include_once('simple_html_dom/simple_html_dom.php');
$arr = array('http://www.domain.com');
foreach ($arr as $key => &$item) {
$html = file_get_html($item);
// Find category links
foreach($html->find('a[href^=http://www.domain.com/dep/]') as $element) {
if (!in_array($element->href, $arr))
$arr[] = $element->href;
}
}
print_r($arr);
Important: I need to search and add value in the original array, not in the copy (foreach).
First of all
In foreach ($arr as $key => &$item) { every $item is a STRING. (As a warning told you). So you shouldn't use $item[] here.
Next pitfall: if you want to add new items to your $arr array symtax should be
$arr[] = $some_var;
But you shouldn't do this because every time you add items to $arr, this array increases and you iterate not over two elements array, but for example 3-elements or 4 elements. Do you expect this?
You should find new values, put them in some other array and then merge both arrays.
Or use #splash58 solution. It's even simplier.
foreach ($topicarray as $key=>$value){
$files = mysql_query("mysqlquery");
while($file = mysql_fetch_array($files)){ extract($file);
$topicarray[$value] = array( array($id=>$title)
);
}
}
The first foreach loop is providing me with an array of unique values which forms a 1-dimensional array.
The while loop is intended to store another array of values inside the 1-dimensional array.
When the while loop returns to the beginning, it is overwriting it. So I only ever get the last returned set of values in the array.
My array ends up being a two dimensional array with only one value in each of the inner arrays.
Feels like I'm missing something very basic here - like a function or syntax which prevents the array from overwriting itself but instead, adds to the array.
Any ideas?
Step 1. Replace $topicarray[$value] with $topicarray[$value][]
Step 2. ???
Step 3. Profit
Make $topicarray[$value] an array of rows, instead of one row. Also, don't use extract here.
foreach ($topicarray as $key => $value) {
$rows = array();
$files = mysql_query("mysqlquery");
while($file = mysql_fetch_array($files)) {
$rows[] = array($file['id'] => $file['title']);
}
$topicarray[$value] = $rows;
}
Also, you should switch to PDO or MySQLi.