glennn.php Posted May 5, 2010 Share Posted May 5, 2010 i have a LONG column of variable, only some of which contain a value, at different times, i.e. $pagetext .= $o1."<br />"; $pagetext .= $o2."<br />"; $pagetext .= $o3."<br />"; $pagetext .= $o4."<br />"; $pagetext .= $o5."<br />"; $pagetext .= $o6."<br />"; $pagetext .= $o7."<br />"; $pagetext .= $o8."<br />"; $pagetext .= $o9."<br />"; $pagetext .= $o10."<br />"; $pagetext .= $o11."<br />"; $pagetext .= $o12."<br />"; $pagetext .= $o13."<br />"; $pagetext .= $o14."<br />"; (it's much longer) - i don't think i want to apply an if($o1 != "") statement to each one, or even a switch()... i'm sure there's a way to print these ONLY if they contain a value, but i'm not good enough to know how this might be done. can someone with some exp. show me how i might accomplish this? (they go o1 through o40) i really appreciate it. GN Quote Link to comment Share on other sites More sharing options...
ScotDiddle Posted May 5, 2010 Share Posted May 5, 2010 glennn.php I don't see any way around checking the variables for NULL... However, if you gather your variables under the umbrella on an array, this is easily accomplished. The following script does ( I think ) what you want. Let us know. Scot L. Diddle, Richmond VA <?php Header("Cache-control: private, no-cache"); Header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); Header("Pragma: no-cache"); $pagetext = ""; $o = array(); $o[0] = ''; $o[1] = "Hi Mom"; $o[2] = ''; $o[3] = ''; $o[4] = ''; $o[5] = ''; $o[6] = ''; $o[7] = ''; $o[8] = ''; $o[9] = ''; $o[10] = ''; $o[11] = ''; $o[12] = "Bye Mom"; $o[13] = ''; $o[14] = ''; $o[15] = ''; $o[16] = ''; $o[17] = ''; $o[18] = ''; $o[19] = ''; $o[20] = ''; $o[21] = ''; $o[22] = ''; $o[23] = ''; $o[24] = ''; $o[25] = ''; $o[26] = ''; $o[27] = ''; $o[28] = ''; $o[29] = ''; $o[30] = ''; $o[31] = ''; $o[32] = ''; $o[33] = ''; $o[34] = ''; $o[35] = ''; $o[36] = ''; $o[37] = ''; $o[38] = ''; $o[39] = ''; $o[40] = ''; foreach ($o as $IDX => $oOut) { if ($oOut != NULL) { $pagetext .= "Item: $IDX = $oOut <br /> \n"; } } echo $pagetext; ?> Quote Link to comment Share on other sites More sharing options...
glennn.php Posted May 5, 2010 Author Share Posted May 5, 2010 ok - $o* are data retrieved from a db, so i can do $o = array(); $o[0] = '$01'; $o[1] = "$02"; ... ? looks like that's what i want instead of 40 if() statements... i'll let you know... thanks Quote Link to comment Share on other sites More sharing options...
kenrbnsn Posted May 5, 2010 Share Posted May 5, 2010 I would use a variable variable (see: http://us2.php.net/manual/en/language.variables.variable.php) here: <?php $o1 = 'yes'; $o3 = 'why'; $o7 = 'no'; $o2 = ''; $o4 = ''; $o5 = ''; $o6 = ''; $o8 = ''; for ($i=1;$i<9;++$i) { if (${'o'.$i} != '') echo ${'o'.$i} . "<br>\n"; } ?> Ken Quote Link to comment Share on other sites More sharing options...
glennn.php Posted May 5, 2010 Author Share Posted May 5, 2010 brilliant on both of you - this worked great for ($i=1;$i<41;++$i) { if (${'p'.$i} != '') $pagetext .= ${'p'.$i} . "<br>\n"; } lots less code. thanks both of you... see Options and Price columns at the bottom here: http://custom-shipping-cases.com/site5/item-details.php?pageid=234 http://custom-shipping-cases.com/site5/item-details.php?pageid=160 Quote Link to comment Share on other sites More sharing options...
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