PHP variable inside curl_init URL

Question

I use the curl function to get information from a certain webpage. In the following code the URL is static:

$curl = curl_init('http://00.00.0.00/route/v1/driving/12.869446,54.990799;12.045227,54.044362?overview=full&steps=true'); 
curl_setopt($curl, CURLOPT_PORT, 5000);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 5000); 
$result = curl_exec($curl);

But the part's lat lng (12.869446,54.990799) in the URL need to be php variables like: $lng, $lat.

My first solution doesn't work:

$lat = '54.990799';
$lng = '54.990799'; 
$curl = curl_init('http://00.00.0.00/route/v1/driving/$lng,$lat;12.045227,54.044362?overview=full&steps=true');

My second solution with " doesn't work either:

$curl = curl_init('http://00.00.0.00/route/v1/driving/"$lng","$lat";12.045227,54.044362?overview=full&steps=true');

Can anyone help me with the best solution?

Possible duplicate of PHP - concatenate or directly insert variables in string — Elias Soares
– Elias Soares, Commented Feb 21, 2017 at 14:02
Did you really did any search before asking? Look this question. All you need is concatenate your variable with the string, and there is many ways doing this. — Elias Soares
– Elias Soares, Commented Feb 21, 2017 at 14:03

Robin Drost · Accepted Answer · 2017-02-21 13:59:48Z

3

Variables can be used inside "".

 $curl = curl_init("http://00.00.0.00/route/v1/driving/{$lng},{$lat};12.045227,54.044362?overview=full&steps=true");

answered Feb 21, 2017 at 13:59

Robin Drost

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Jakub Matczak · Accepted Answer · 2017-02-21 13:59:57Z

2

You can embed variables in a string this way:

$curl = curl_init("http://00.00.0.00/route/v1/driving/$lng,$lat;12.045227,54.044362?overview=full&steps=true");

Or for better readability also add {} around variables (IDE can often make a proper code highlighting to such syntax):

$curl = curl_init("http://00.00.0.00/route/v1/driving/{$lng},{$lat};12.045227,54.044362?overview=full&steps=true");

Or alternatively you can concatenate strings with variables.

$curl = curl_init('http://00.00.0.00/route/v1/driving/' . $lng . ',' . $lat . ';12.045227,54.044362?overview=full&steps=true');

answered Feb 21, 2017 at 13:59

Jakub Matczak

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