How to cut what you need in preprocessing in Zabbix?

Question

Zabbix

Outdoor air temperature monitoring is set up and running through data that is taken from the site.

Thus, I get a row element with a temperature of the form:

<span class="warm txt-xxlarge"><strong>+4</strong> °С</span><br />

My preprocessing, Regular expression:

<span class="warm txt-xxlarge"><strong>[+]([0-9]+)[</strong> °С</span><br />]

/1

Zabbix gets response: 4 This is easy to handle, charting, configuring triggers. Data element information type: Positive integer number.

But there are two BUT:
The number cannot be negative, but the temperature outside can.
The string received changes to "with a minus" and everything does not work right away. For example:

<span class="warm txt-xxlarge"><strong>-7</strong> °С</span><br />

Answer 1

The data type is "Numeric (floating point)" and the template can be made a little simpler.

<span class="warm txt-xxlarge"><strong>([+-0-9]+)</strong> °С</span><br /> \1