HoTDaWg Posted December 23, 2008 Share Posted December 23, 2008 hi im currently learing php from a book and it did not explain the purpose of a % in an if statement: <?php if(($x % $perrow) ==0) { print "the staement ..."; } //it also uses it later... if (($x % perrow) != 0) { print "another statement"; } else { print "the final statement"; ?> the script basically outputs all the images it finds in a folder and places each inside of a table. The full code is: <?php error_reporting(E_ALL); $fdir = "Uploads"; $files = array(); print <<<HTML <html> <body> HTML; ($dir = opendir($fdir)) or die ("Cannot open \"$fdir\""); $grphnum = 0; while(!($file= readdir($dir)) === FALSE) { if (strpos($file,".png") || strpos($file,".gif") || strpos($file,".jpg")) { $grphnum++; $files["$grphnum"] = $fdir."/".$file; } } closedir($dir); array_multisort($files,SORT_ASC,SORT_STRING); print "\t<table border=1>\n"; print "\t<tr height=\"60\">\n"; $perrow=5; for ($x=1; $x <= $grphnum; $x++) { print "\t\t<td><img src=".$files["$x"]." width=\"50\"></td>\n"; if (($x % $perrow) == 0) { print "\t</tr>\n\t<tr height=\"60\">\n"; } } if (($x % $perrow) != 0) { print "\t\t<td> </td>\n\t</tr>\n"; }else{ print "\t</tr>\n"; } print "\t</table>\n"; print <<<html </body> </html> html; ?> so my quesiton what does the % do and why is it being used? any help would be greatly appreciated thanks Quote Link to comment Share on other sites More sharing options...
Maq Posted December 23, 2008 Share Posted December 23, 2008 The % = modulus. Basically it's the remainder of the 2 values. Please read this. Quote Link to comment Share on other sites More sharing options...
HoTDaWg Posted December 23, 2008 Author Share Posted December 23, 2008 okay cool thanks so much, really helped:) Quote Link to comment Share on other sites More sharing options...
Maq Posted December 23, 2008 Share Posted December 23, 2008 Real men solve their own problems: Google PHP Manual I guess you're not a real man... Quote Link to comment Share on other sites More sharing options...
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