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full demo - top layer and main code file
Generating CSS through PHP example from a Well House Consultants training course
More on Generating CSS through PHP [link] Source code: index.php Module: H118
<?php
$trace = ""; // PHP "reference card" and indexing system /* Read in from $_REQUEST (POST, GET and COOKIE) Also in from $_SESSION to see how we're doing Write back out to $_SESSION Set up outputs for display in $fill */ require("stdsess.inc"); /* Web helpers */ /* next line sets up $fill for required look and feel */ require("style.inc"); /* Style sheet handlers */ $page = $fill[pagename] = $_REQUEST[pagename]; /* Some fallbacks that may get overridden */ //////////////////////////////////////////// $fill[lhtop] = "wiwb23"; $fill[rhtop] = "wiwb40"; $fill[mimage] = "tramm3"; $fill[stuff] = "<p>Hear the birds sing on the Marlbrough". " Downs and the Wurzels sing at the Three Magpies</p>"; $fill[title] = "All Around Wiltshire"; $fill[linkon] = ""; /* Read in the main stuff here */ ///////////////////////////////// // Connect to the database @mysql_connect("localhost","trainee","abc123"); @mysql_select_db("wellho"); /* Following line fails silently if the table already exists! */ @mysql_query("create table refcards (". "pagename text, ". "lhtop text, ". "rhtop text, ". "mimage text, ". "title text, ". "body text, ". "id int primary key not null auto_increment)"); // Read in the current record to display ////////////////////////////////////////////////// /* The updating and logging is stuff goes here */ ////////////////////////////////////////////////// /* Simple first scheme - hard code password and account */ $logname = "bourne"; $passcode = "enruob"; $fill[login] = "<p><form method=POST>". "To logout: ". "<input type=submit name=off value=logout></form></p>"; /* Right ... are we logged in, etc - what state are we in? */ session_start(); // Set up for a newcomer or find our where oldcomer is. if (! $_SESSION[current]) { $current = 0; } else { $current = $_SESSION[current]; } if ($_REQUEST[off] == "logout") { $current = 0; session_destroy(); } ######################### Handler responses from previous page $error = 0; $trace .= "current = $current"; switch ($current) { case 0: // Finish up from initialisation with possible log in if ($_REQUEST[name] == $logname and $_REQUEST[pcode] == $passcode) { $current = 1; } break; case 1: // Read back and store the edited text if ($_REQUEST[update_completed]) { mysql_query("delete from refcards where pagename = '$page'"); $query = "insert into refcards ". "(pagename,body,title,lhtop,rhtop,mimage) values (". "\"$_REQUEST[pagename]\",". "\"$_REQUEST[body]\",". "\"$_REQUEST[title]\",". "\"$_REQUEST[lhtop]\",". "\"$_REQUEST[rhtop]\",". "\"$_REQUEST[mimage]\")"; $trace .= "<br>$query"; mysql_query($query); } break; } $_SESSION[current] = $current; // Read in the page from the database for display ///////////////////////////////////////////////// $rs = @mysql_query("select * from refcards where pagename = '$page'"); $info = @mysql_fetch_assoc($rs); if ($info) { if ($info[lhtop]) $fill[lhtop] = $info[lhtop]; if ($info[rhtop]) $fill[rhtop] = $info[rhtop]; if ($info[mimage]) $fill[mimage] = $info[mimage]; // Take the body line by line .. // .. deal with web special chars .. $paragraphs = explode("\n",htmlentities($info[body])); // .. eliminate blank lines and join into <p> tags $live = preg_grep('/\S/',$paragraphs); $taggled = "<p>".implode("</p>\n<p>",$live)."</p>\n"; // .. Underlined, bold, italic support $taggled = preg_replace("/\[([u])\]/",'<\1>',$taggled); $taggled = preg_replace("!\[/([u])\]!",'</\1>',$taggled); $taggled = preg_replace("/\[([b])\]/",'<strong>',$taggled); $taggled = preg_replace("!\[/([b])\]!",'</strong>',$taggled); $taggled = preg_replace("/\[([i])\]/",'<em>',$taggled); $taggled = preg_replace("!\[/([i])\]!",'</em>',$taggled); $fill[stuff] = $taggled; $fill[title] = htmlentities($info[title]); } // Read in all the other records in the system to make links $rs = @mysql_query("select pagename,title from refcards where pagename != '$page'"); $fill[nlinks]=0; while ($info = @mysql_fetch_assoc($rs)) { $fill[nlinks]++; $fill[linkon] .= "<p class=lynx>Link on to <a href=$info[pagename].html>". "$info[pagename]</a>$info[title]</p>"; } ######################### Prepare for next form switch ($current) { case 0: // Not logged in. Just give them the page $fill[login] = "<p><form method=POST>". "To edit, give name <input name=name> and ". "password <input name=pcode type=password>". " and <input type=submit value=login></form></p>"; $fill[form] = ""; break; case 1: // Logged in - offer the text for edit. $rs = @mysql_query("select * from refcards where pagename = '$page'"); $info = @mysql_fetch_assoc($rs); if (! $info) $info = array(); $fields = array ( array("title","Page title",$info[title],$xttl), array("lhtop","Top left image",$info[lhtop],$xttl), array("rhtop","Top right image",$info[rhtop],$xttl), array("mimage","Main image",$info[mimage],$xttl), array("body","Page body",$info[body],$xbody,type=>"textarea")) ; $fill[form] = makeform($fields); break; } /* Ancilliary parameters */ /////////////////////////// $fill[year] = date("F Y"); $fill[trace] = ""; /* $fill[trace] = $trace; */ # Uncomment for analysis report /* Complete the template */ $fh = fopen ("page.htp","r"); $html = fread($fh,filesize("page.htp")); foreach (array_keys($fill) as $k) { $html = preg_replace("/%$k%/",$fill[$k],$html); } print $html; ?> Learn about this subject
This module and example are covered on the following public courses:
* Learning to program in PHP * PHP Programming Also available on on site courses for larger groups Books covering this topic
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Other Examples
This example comes from our "Generating CSS through PHP" training module. You'll find a description of the topic and some
other closely related examples on the "Generating CSS through PHP" module index page.
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