php using file_get_contents with an array

Question

I am trying to pull values from the following url: https://api.binance.com/api/v1/ticker/allPrices

What I want to accomplish: Obtain all the "symbol" values printed in the website (one under the other)

The result I am looking for, would be:

ETHBTC
LTCBTC
...

This is what I have done so far:

<?php
$url = "https://api.binance.com/api/v1/ticker/allPrices";
$content = file_get_contents($url);
$json_data = json_decode($content, true);

for ($i=0; $i < count($json_data); $i++) { 
    # code...
    print_r($json_data);
}
?>

The result it brings is the entire data (the symbols, prices, plus other irrelevant data).

Thanks in advance.

Goma · Accepted Answer · 2018-01-01 22:36:05Z

2

You can use foreach loop, then echo the value by symbol key

$url = "https://api.binance.com/api/v1/ticker/allPrices";
$content = file_get_contents($url);
$json_data = json_decode($content, true);

foreach ($json_data as $value) {
    echo $value["symbol"] . '<br>';
}

answered Jan 1, 2018 at 22:36

Goma

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2 Comments

F0l0w Over a year ago

Hi Erwin. How would it work if instead of all the full values list. I would just like to get one item of the array? example, the first array item. Something like echo $value["symbol[0]"] ?

Goma Over a year ago

if you just want one value, you can skip the loop and print it directly. E.g. echo $json_data[0]["symbol"]; wherein, [0] means the first set of array inside $json_data

Chris Applegate · Accepted Answer · 2018-01-01 22:35:19Z

2

This ought to do it:

<?php
$url = "https://api.binance.com/api/v1/ticker/allPrices";
$content = file_get_contents($url);
$json_data = json_decode($content, true);

for ($i=0; $i < count($json_data); $i++) {
    echo $json_data[$i]['symbol'] . "\n";
}
?>

answered Jan 1, 2018 at 22:35

Chris Applegate

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1 Comment

F0l0w Over a year ago

Hi Chris, How would it work if instead of having all the list values displayed in the website, I just wanted to have specific list values displayed? Example: I want to have displayed the array item that has the symbol "LTCBTC"

Ctznkane525 · Accepted Answer · 2018-01-01 22:33:22Z

0

json_data["symbol"]

instead in the print

answered Jan 1, 2018 at 22:33

Ctznkane525

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2 Comments

F0l0w Over a year ago

Like this? print_r($json_data["symbol"]);

F0l0w Over a year ago

does not work Notice: Undefined index: symbol in line 26

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