Get JSON object from URL with php issue

Question

I have the following php:

<?php $json = file_get_contents('https://www.cryptonator.com/api/full/doge-usd'); $obj = json_decode($json); echo $obj->ticker.price; ?>

This returns a blank page. Yet when I do:

echo $json;

I get the full JS:

{"ticker":{"base":"DOGE","target":"USD","price":"0.00013826","volume":"14555353.11203900","change":"-0.00000236","markets":[{"market":"Bleutrade","price":"0.00014400","volume":1.49328868},{"market":"Cex.io","price":"0.00013864","volume":6236157},{"market":"Comkort","price":"0.00014990","volume":412.40655758},{"market":"Cryptsy","price":"0.00013853","volume":382887.92442395},{"market":"Exmo","price":"0.00013800","volume":7932091.2389102},{"market":"Nix-e","price":"0.00011100","volume":539.10150086},{"market":"useCryptos","price":"0.00000305","volume":3263.94735765}]},"timestamp":1425854462,"success":true,"error":""}

I just want to create a variable that contains the value within the 'price' field.

Thanks.

arkascha · Accepted Answer · 2015-03-09 07:20:12Z

The json_encode() call returns a nested object. So you have to address the price attribute like that:

echo $obj->ticker->price;

The . operator you coded is a string concatenation in php. That is not what you want. php tries to concatenate two strings, the first being an object of type stdClass for which no string conversion routine exists. That is why you get the error.

Christian · Accepted Answer · 2015-03-08 22:58:40Z

there are to ways to do this.

1) You can get the value like this

echo $obj->ticker->price;

2) You can convert the object into an associative array

$obj = json_decode($json, !!'assoc'); echo $obj["ticker"]["price"];

John B · Accepted Answer · 2015-03-08 22:53:13Z

0

You want to do:

echo $obj->ticker->price;

answered Mar 8, 2015 at 22:53

John B

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Comments

Shahzad Barkati · Accepted Answer · 2015-03-08 22:59:26Z

This is working and tested code:

<?php $json = file_get_contents('https://www.cryptonator.com/api/full/doge-usd'); $obj = json_decode($json,true); echo 'price: '.$obj['ticker']['price']; ?>

output: price: 0.00013833

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