I write simple requirements checking script. It checks all required PHP modules installed. I need to check if pcntl is installed. But this module is accessible only in cgi environment and invisible for web queries. extension_loaded('pcntl') and function_exists('pcntl_fork') both return false. How can I perform this check?
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1At the end of the day if `function_exists('pcntl_fork') == false` you can't use `pcntl_fork` – Orangepill Jun 11 '13 at 18:09
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The problem is that if pcntl is present it still invisible until you run script without server, i.e. /usr/local/bin/php script.php. If you run script such method it will work fine. But if you want to check it from web like http://domain.com/req_check.php - there it will be hidden. – WindBridges Jun 11 '13 at 21:32
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The you are going to have to create a separate capability fishing script to get the capabilities from the CLI. you should be able to run that one from shell_exec and parse the returned data. – Orangepill Jun 11 '13 at 21:36
4 Answers
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Running php -i | grep pcntl will return the following if pcntl is enabled.
pcntl
pcntl support => enabled
TheRealJAG
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If it is installed, the code bellow returns true
var_dump (extension_loaded('pcntl'));
Jack M.
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Create a file called cli_supports.php
<?php
$supports = array();
if (function_exists("pcntl_fork")) $supports[] = "pcntl";
echo implode(",", $supports);
?>
Then from your feature detection scripts do.
$cli_features = explode(",", shell_exec("/usr/local/bin/php ".escapeshellarg(_DIR_."/cli_supports.php")));
Orangepill
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If you're sure it's supported (or shared object exists) then check your php.ini and make sure it's loaded as an extension.
extension_loaded() should work (and what I prefer over function_exists()), and the only reason I can imagine it wouldn't is you not loading the shared object.
