Apache Solr Reference Guide Covering Apache Solr 6.0

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Python Response Writer
Solr has an optional Python response format that extends its JSON output in the following ways to allow the
response to be safely evaluated by the python interpreter:
true and false changed to True and False
Python unicode strings are used where needed
ASCII output (with unicode escapes) is used for less error-prone interoperability
newlines are escaped
null changed to None
PHP Response Writer and PHP Serialized Response Writer
Solr has a PHP response format that outputs an array (as PHP code) which can be evaluated. Setting the wt par
ameter to php invokes the PHP Response Writer.
Example usage:
$code =
file_get_contents('http://localhost:8983/solr/techproducts/select?q=iPod&wt=php');
eval("$result = " . $code . ";");
print_r($result);
Solr also includes a PHP Serialized Response Writer that formats output in a serialized array. Setting the wt par
ameter to phps invokes the PHP Serialized Response Writer.
Example usage:
$serializedResult =
file_get_contents('http://localhost:8983/solr/techproducts/select?q=iPod&wt=phps');
$result = unserialize($serializedResult);
print_r($result);
Ruby Response Writer
Solr has an optional Ruby response format that extends its JSON output in the following ways to allow the
response to be safely evaluated by Ruby's interpreter:
Ruby's single quoted strings are used to prevent possible string exploits.
\ and ' are the only two characters escaped.
Unicode escapes are not used. Data is written as raw UTF-8.
nil used for null.
=> is used as the key/value separator in maps.
Apache Solr Reference Guide 6.0
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