http_build_query

[elvispdosreis]

Guzzle version(s) affected: 6.5.8
PHP version: 8.1

Description
http_build_query(): Passing null to parameter #2 ($numeric_prefix) of type string is deprecated
guzzlehttp/guzzle/src/Client.php line 445

How to reproduce

if (is_array($value)) {
 $value = http_build_query($value, null, '&', PHP_QUERY_RFC3986);
}

Possible Solution

if (is_array($value)) {
 $value = http_build_query($value, '', '&', PHP_QUERY_RFC3986);
}

[mfn]

See https://github.com/guzzle/guzzle#version-guidance , 6.x is in security-fixes mode and only supports PHP <8.0

[GrahamCampbell]

Yep, that's correct. Please upgrade to the latest version of Guzzle 7 ASAP.