Description:
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Every call to ifx_pconnect() opens a connection to the database server instead of using the connection previously created. This situation take place when the gap between each call is about 20 seconds or more. We monitor the connections to the database server with the informix command 'onstat -g ses'. The connections remains open until the apache server is stopped.


Reproduce code:
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<?php
    $conn_id = ifx_pconnect ("db@server", "user", "pass");
?>

Expected result:
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I expect the script doesn't open a new connection to the database server if it find a connection already established. I expect it uses the connection already open.

Actual result:
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The script open a new connection to the server if the gap between each call to the script is about 20 seconds or more. The connections remains open until de apache server is stopped.