note 115469 added to function.ini-get

I was needing a small function to return the memory limit in a system, in whatever value was in php.ini I made this tiny function (can be reduced) which works well (at least on 64bit systems, may not work on 32bit systems for GB values). <?php function memory_limit() { if(!function_exists('ini_get')||($m=@ini_get('memory_limit'))===null)return null; $x=array(''=>1,'k'=>1024,'m'=>1048576,'g'=>1073741824); return($n=$m/1)*$x[strtolower(str_replace($n,'',$m))]; } ?> Readable and commented version: <?php function memory_limit() { //verifies if the function ini_get exists and is enabled //(it's impossible to avoid using the error suppression operator here) if( !function_exists('ini_get') || ($memory = @ini_get('memory_limit')) === null ) return null; //this will be used to multiply by the final value, to obtain the size in bytes $units=array( //this is used when there is no unit //when there is no unit, php interprets as if the value // was already a value in bytes ''=>1, 'k'=>1024,//kbytes 'm'=>1048576,//mbytes = 1024 * 1024 'g'=>1073741824 //gbytes = 1024 * 1024 * 1024 ); $amount = $memory/1;//convert the value to a number //removes the memory amount, leaving behind only the unit if present $unit = strtolower(str_replace($amount,'',$memory)); //makes the calculation return $amount*$units[$unit]; } ?> This might not be the fastest, but surely its the simplest way. ---- Server IP: 72.52.91.14 Probable Submitter: 93.108.96.50 ---- Manual Page -- http://php.net/manual/en/function.ini-get.php Edit -- https://master.php.net/note/edit/115469 Del: integrated -- https://master.php.net/note/delete/115469/integrated Del: useless -- https://master.php.net/note/delete/115469/useless Del: bad code -- https://master.php.net/note/delete/115469/bad+code Del: spam -- https://master.php.net/note/delete/115469/spam Del: non-english -- https://master.php.net/note/delete/115469/non-english Del: in docs -- https://master.php.net/note/delete/115469/in+docs Del: other reasons-- https://master.php.net/note/delete/115469 Reject -- https://master.php.net/note/reject/115469 Search -- https://master.php.net/manage/user-notes.php