Here's an array:
array('csv'=>
array('path'=>'/file.csv',
'lines'=>array('line1',
'line2',
'line3'
)
)
)
As you can see, the array goes three levels deep.
Here are two strings:
1. 'csv/path'
2. 'csv/lines/0
Using / as the delimiter, string 1 will get '/file.csv' and string 2 will get 'line1'. I've been thinking about using a recursive function, but I just don't know yet how to go about it.
The idea is I won't know which array key I'm accessing. I'm working on creating a generic function that will take a string as input and return the respective value in the array.
Demo
Just iterate through each key from the string given, setting the new array to pull from as the found element in the given array. You should add error handling.
<?php
$array = array('csv'=>
array('path'=>'/file.csv',
'lines'=>array('line1',
'line2',
'line3'
)
)
);
echo extractData($array, 'csv/path'); // echoes /file.csv
echo extractData($array, 'csv/lines/0'); // echoes line1
function extractData($array, $string){
$keys = explode('/', $string);
$data = $array;
foreach ($keys as $key){
$data = $data[$key];
}
return $data;
}
Related
Example
I have CSV file that contains data of random number example data in CSV :
639123456789,73999999999,739222222222,839444444444,8639555555555....more
So, if I upload it, I want it to explode in a variable or in an array as long as I get the specific data. example of data I want to get is all 2 first line starting at 73 be extract so meaning all numbers that start with 73 only.
Example: 73999999999,739222222222
I have tried it by using only 1 number using split,substr and explode function but my problem is if the user input a CSV bulk data with no limit.
You can use substr() and loop through your array deleting the elements that do not match.
$str = '639123456789,73999999999,739222222222,839444444444,8639555555555';
$array = explode(',', $str); //Convert your string to an array.
$searchString = '73'; //Set the value your looking for.
foreach($array as $key=>$value){
if(substr($value, 0, 2) != $searchString){ //This will test first two characters.
unset($array[$key]);
}
}
$array = array_values($array);
print_r($array);
This will output:
Array
(
[0] => 73999999999
[1] => 739222222222
)
Updated
This will make a new array with only the numbers you want in it, leaving the original array untouched.
$str = '639123456789,73999999999,739222222222,839444444444,739222222222,839444444444,839444444444,73999999999';
$array = explode(',', $str);
$searchString = '73';
foreach($array as $key=>$value){
if(substr($value, 0, 2) == $searchString){
$results[] = $value;
}
}
print_r($results);
I am being passed inconsistent data. The problem is the individual rows of $data_array are not consistently in the same sequence but each has a reliable "text:" preceding the value.
Each row contains about 120 elements of data. I only need 24 of those elements.
It's also possible one of the elements I need could be missing, such as "cost".
(I'm using php version 5.4)
-- Task:
Using $order_array, create a new $data_array_new by reordering the data in each "row" into the same sequence as $order_array.
If an elements is missing from a row insert "NA".
Once the elements are in the correct sequence the "text" is no longer required.
$order_array = array("price", "cost", "vol", "eps")
$data_array = Array (
$one = Array ("cost":43.40, "vol":44000, "eps":1.27, "price":65.00),
$two = Array ("eps":5.14, "price":33.14, "vol":657000),
$thr = Array ("vol":650000, "cost":66.67, "eps":1.33, "price":44.31),
);
The resulting ouput should appear with the data in this order: ("price", "cost", "vol", "eps")
$data_array_new = Array (
$one = Array (65.00,43.40,44000,1.27),
$two = Array (33.14,"NA",657000,5.14),
$thr = Array (44.31,66.67,650000,1.33),
);
$data_array_new = [];
foreach ($data_array as $index => $data) {
$data_array_new[$index] = [];
foreach ($order_array as $key) {
if (isset($data[$key])) {
$data_array_new[$index][] = $data[$key];
} else {
$data_array_new[$index][] = 'NA';
}
}
}
You can view the original incoming data here: https://api.iextrading.com/1.0/stock/market/batch?symbols=aapl,tsla,ge&types=quote,earnings,stats
Here is the answer from : Andreas
Use json_decode on the string with the second parameter true and you get a associative array as output.
$url = "https://api.iextrading.com/1.0/stock/market/batch?
symbols=aapl,tsla,ge&types=quote,earnings,stats";
$arr = json_decode(file_get_contents($url), true);
Var_dump($arr);
See here;
I copied the string from the page and posted it as $str.
https://3v4l.org/duWrI
Two steps is all that is needed.
I have a key value pair string that I would like to convert to a functional array. So that I can reference the values using their key. Right now I have this:
$Array = "'Type'=>'Honda', 'Color'=>'Red'";
$MyArray = array($Array);
This is not bringing back a functional key/value array. My key value pairs are in a variable string which means the => is part of the string and i think this is where my problem is. Any help would be appreciated. All i am trying to do is convert the string to a functional key/value pair where I can grab the values using the key. My data is in a string so please don't reply with the answer "take them out of the string." I am aware that this will work:
$MyArray = array('Type'=>'Honda', 'Color'=>'Red');
But my probem is that the the data is already in the form of a string. Thank you for any help.
There is no direct way to do this. As such, you'll need to write a custom function to build the keys and values for each element.
An example specification for the custom function:
Use explode() to split each element based on the comma.
Iterate over the result and:
explode() on =>
Remove unnecessary characters, i.e. single quotes
Store the first element as the key and the second element as the value
Return the array.
Note: if your strings contain delimiters this will be more challenging.
You do need to "take them out of the string", as you say. But you don't have to do it manually. The other answer uses explode; that's a fine method. I'll show you another - what I think is the easiest way is to use preg_match_all() (documentation), like this:
$string = "'Type'=>'Honda', 'Color'=>'Red'";
$array = array();
preg_match_all("/'(.+?)'=>'(.+?)'/", $string, $matches);
foreach ($matches[1] as $i => $key) {
$array[$key] = $matches[2][$i];
}
var_dump($array);
You need to parse the string and extract the data:
$string = "'Type'=>'Honda', 'Color'=>'Red'";
$elements = explode(",",$string);
$keyValuePairs = array();
foreach($elements as $element){
$keyValuePairs[] = explode("=>",$element);
}
var_dump($keyValuePairs);
Now you can create your on array using the $keyValuePairs array.
Here is an example of one way you can do it -
$Array = "'Type'=>'Honda', 'Color'=>'Red'";
$realArray = explode(',',$Array); // get the items that will be in the new array
$newArray = array();
foreach($realArray as $value) {
$arrayBit = explode('=>', $value); // split each item
$key = str_replace('\'', '', $arrayBit[0]); // clean up
$newValue = str_replace('\'', '', $arrayBit[1]); // clean up
$newArray[$key] = $newValue; // place the new item in the new array
}
print_r($newArray); // just to see the new array
echo $newArray['Type']; // calls out one element
This could be placed into a function that could be extended so each item gets cleaned up properly (instead of the brute force method shown here), but demonstrates the basics.
Suppose I've got the following string:
) [6] => Array ( [2014-05-05 00:0] => My actual content
If I want to only be left with My actual content at the end, what is the best way to split the entire string?
Note: the words My actual content are and can change. I'm hoping to cut the string based on the second => string as this will be present at all times.
It seems you're just looking to find the first value of an array with keys you do not know. This is super simple:
Consider the following array:
$array = array(
'2014-05-22 13:36:00' => 'foo',
'raboof' => 'eh',
'qwerty' => 'value',
'8838277277272' => 'test'
);
Method #1:
Will reset the array pointer to the first element and return it.
Using reset:
var_dump( reset($array) ); //string(3) "foo"
DEMO
Method #2:
Will reset the entire array to use keys of 0, 1, 2, 3...etc. Useful if you need to get more than one value.
Using array_values:
$array = array_values($array);
var_dump( $array[0] ); //string(3) "foo"
DEMO
Method #2.5:
Will reset the entire array to use keys of 0, 1, 2, 3...etc and select the first one into the $content variable. Useful if you need to get more than one value into variables straight away.
Using list and array_values:
list( $content ) = array_values($array);
var_dump( $content ); //string(3) "foo"
DEMO
Method #3:
Arrays are iteratable, so you could iterate through it but break out immediately after the first value.
Using a foreach loop but break immediatly:
foreach ($array as $value) {
$content = $value;
break;
}
var_dump($content); //string(3) "foo"
DEMO
To Answer your question, on extracting from a string based on last 'needle'...
Okay, this is quite an arbitrary question, since it seems like you're showing us the results from a print_r(), and you could reference the array key to get the result.
However, you mentioned "... at the end", so I'm assuming My actual content is actually right at the end of your "String".
In which case there's a very simple solution. You could use: strrchr from the PHP manual - http://www.php.net/manual/en/function.strrchr.php.
So you're looking at this: strrchr($string, '=>');
Hope this answers your question. Advise otherwise if not please.
you have to use foreach loop in a foreach to get the multi dimentional array values.
foreach($value as $key){
foreach($key as $val){
echo $val;
}
}
I have an array and in that array I have an array key that looks like, show_me_160 this array key may change a little, so sometimes the page may load and the array key maybe show_me_120, I want to now is possible to just string match the array key up until the last _ so that I can check what the value is after the last underscore?
one solution i can think of:
foreach($myarray as $key=>$value){
if("show_me_" == substr($key,0,8)){
$number = substr($key,strrpos($key,'_'));
// do whatever you need to with $number...
}
}
I ran into a similar problem recently. This is what I came up with:
$value = $my_array[current(preg_grep('/^show_me_/', array_keys($my_array)))];
you would have to iterate over your array to check each key separately, since you don't have the possibility to query the array directly (I'm assuming the array also holds totally unrelated keys, but you can skip the if part if that's not the case):
foreach($array as $k => $v)
{
if (strpos($k, 'show_me_') !== false)
{
$number = substr($k, strrpos($k, '_'));
}
}
However, this sounds like a very strange way of storing data, and if I were you, I'd check if there's not an other way (more efficient) of passing data around in your application ;)
to search for certain string in array keys you can use array_filter(); see docs
// the array you'll search in
$array = ["search_1"=>"value1","search_2"=>"value2","not_search"=>"value3"];
// filter the array and assign the returned array to variable
$foo = array_filter(
// the array you wanna search in
$array,
// callback function to search for certain sting
function ($key){
return(strpos($key,'search_') !== false);
},
// flag to let the array_filter(); know that you deal with array keys
ARRAY_FILTER_USE_KEY
);
// print out the returned array
print_r($foo);
if you search in the array values you can use the flag 0 or leave the flag empty
$foo = array_filter(
// the array you wanna search in
$array,
// callback function to search for certain sting
function ($value){
return(strpos($value,'value') !== false);
},
// flag to let the array_filter(); know that you deal with array value
0
);
or
$foo = array_filter(
// the array you wanna search in
$array,
// callback function to search for certain sting
function ($value){
return(strpos($value,'value') !== false);
}
);
if you search in the array values and array keys you can use the flag ARRAY_FILTER_USE_BOTH
$foo = array_filter(
// the array you wanna search in
$array,
// callback function to search for certain sting
function ($value, $key){
return(strpos($key,'search_') !== false or strpos($value,'value') !== false);
},
ARRAY_FILTER_USE_BOTH
);
in case you'll search for both you have to pass 2 arguments to the callback function
You can also use a preg_match based solution:
foreach($array as $str) {
if(preg_match('/^show_me_(\d+)$/',$str,$m)) {
echo "Array element ",$str," matched and number = ",$m[1],"\n";
}
}
filter_array($array,function ($var){return(strpos($var,'searched_word')!==FALSE);},);
return array 'searched_key' => 'value assigned to the key'
foreach($myarray as $key=>$value)
if(count(explode('show_me_',$event_key)) > 1){
//if array key contains show_me_
}
More information (example):
if array key contain 'show_me_'
$example = explode('show_me_','show_me_120');
print_r($example)
Array ( [0] => [1] => 120 )
print_r(count($example))
2
print_r($example[1])
120