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PHP - How Does One Refer To Empty Cells In Mysql?
I have tried the following variations but non works
if($row['relation'] = "" ){ if($row['relation'] = '' ){ if($row['relation'] = NULL ){ if($row['relation'] IS NULL ){ if(strlen($row['relation']) = 0 ){ So how would one refer to a cell that is empty? Similar TutorialsThis topic has been moved to MySQL Help. http://www.phpfreaks.com/forums/index.php?topic=320119.0 Can anyone tell me the best way to handle empty search field on a mysql Query? The query below if $name is left blank but the other fields are filled it shows no results, currently i use if.... else.... but that means i have a lot of code replicated, is there a better way? $sql = "SELECT private.username, se.age, se.ro, se.suc, se.bu, se.fu, com.in, com.ol, se.di, se.bo, se.uin FROM Reg_Profile_public AS se INNER JOIN Reg_Profile_Private AS private USING (uin) INNER JOIN Reg_Profile_public_Com AS com USING (uin) WHERE se.age BETWEEN '$low' AND '$high' AND se.ro=''$name"; I see some of the fields in mysql show NULL and some are just empty, wonder what is the difference, is empty field still NULL? Having a bit of a problem with the code below, I am trying to get it the print the html code if the MySql field is not empty but its not working. Any ideas guy? thanks <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> </head> <body> <?php $uincookie = $_COOKIE["uin"]; require("./include/mysqldb.php"); $con = mysql_connect("$dbhost","$dbuser","$dbpass"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("$dbame", $con); $result = mysql_query("SELECT * FROM Reg_Profile_images WHERE uin ='$uincookie'"); $i=1; while($rows = mysql_fetch_array($result)){ if (isset($row[image_zero])) { print "<p> </p> <table width=\"0\" border=\"0\"> <tr> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form3\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button3\" id=\"button3\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form4\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button3\" id=\"button4\" value=\"Make Primary\" /> </div> </label> </form></td> </tr> </table></td>\n"; } if (isset($row[image_one])) { print "<td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form5\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button4\" id=\"button5\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form6\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button4\" id=\"button6\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_two])) { print " </tr> </table></td> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form7\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button5\" id=\"button7\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form8\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button5\" id=\"button8\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_three])) { print " </tr> </table></td> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form9\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button6\" id=\"button9\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form10\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button6\" id=\"button10\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_four])) { print " </tr> </table></td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> </table> <p> </p> <table width=\"0\" border=\"0\"> <tr> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button\" id=\"button\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form2\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button\" id=\"button2\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_five])) { print " </tr> </table></td> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form11\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button\" id=\"button11\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form12\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button\" id=\"button12\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_six])) { print "</tr> </table></td> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form13\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button\" id=\"button13\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form14\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button\" id=\"button14\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_seven])) { print " </tr> </table></td> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form15\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button\" id=\"button15\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form16\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button\" id=\"button16\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_eight])) { print " </tr> </table></td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> </table> <p> </p> <table width=\"0\" border=\"0\"> <tr> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form17\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button2\" id=\"button17\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form18\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button2\" id=\"button18\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_nine])) { print "</tr> </table></td> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form19\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button2\" id=\"button19\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form20\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button2\" id=\"button20\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_ten])) { print "</tr> </table></td> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form21\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button2\" id=\"button21\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form22\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button2\" id=\"button22\" value=\"Make Primary\" /> </div> </label> </form></td>\n"; } if (isset($row[image_eleven])) { print "</tr> </table></td> <td><table width=\"112\" height=\"129\" border=\"0\"> <tr> <td><img src=\"37658_1324208185514_1240161074_30749958_5597262_n.jpg\" alt=\"\" width=\"156\" height=\"166\" /></td> </tr> <tr> <td><form id=\"form23\" name=\"form1\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button2\" id=\"button23\" value=\"Delete Picture\" /> </div> </label> </form></td> </tr> <tr> <td><form id=\"form24\" name=\"form2\" method=\"post\" action=\"\"> <label> <div align=\"center\"> <input type=\"submit\" name=\"button2\" id=\"button24\" value=\"Make Primary\" /> </div> </label> </form></td> </tr> </table></td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr>\n"; } //if($i %4 == 0) { echo '</tr><tr>'; } // this will create the line separator by inserting a row when the $i is dividable by 4 } ?> </table> <p> </p> <p> </p> </body> </html> I know the following simple demonstration fails and what to do to rectify it (though with a lot of additional code is necessary), but I don't know why this is the behaviour. It would be great if someone could explain to me why, and what the neatest way of fixing it would be. Code: [Select] +----------+--------------+------+-----+---------+ | Field | Type | Null | Key | Default | +----------+--------------+------+-----+---------+ | Id | int(11) | NO | PRI | NULL | | Name | varchar(45) | YES | | NULL | | Number | int(9) | YES | | NULL | Code: [Select] $name = "Bradley Cooper"; $number = ""; $query = "INSERT INTO table (Id, Name, Number) VALUES (1, '$name', $number)"; mysql_query($query); Because the $number variable is empty, this simple query fails. Logically, one would think that nothing or NULL gets inserted to that field since the MySQL structure rule states that default is NULL, and since nothing is fed to it in the query, I think that it would automatically be NULL since if the column is omitted, that is exactly the value that will be inserted. Enclosing the variable with quotes is not preferable since this field accepts integers. Also, converting the variable to an integer by (int)$number results in a 0, which is not what I want either. Checking if the variable is empty of not, and if it is, assign $number = "''" so that the query would succeed by enclosing the empty string with single quotes. But this creates a lot of unnecessary code (some of my tables are 80 columns wide and the query therefore have equal amount of variables). So to summarise, why is this happening and how do I neatly avoid assigning quotes to the empty strings? In other words, how do I insert nothing when variables that usually contain an integer is on occation empty? Hello, This is what I'm trying to-do. I have an index.php file I would like a bit of code that says "If you got here from www.websitea.com (or a link within that site) OR www.websiteb.com" do this : else do this: I'm just not sure how to check where they're coming from. so basically if your on google.ca and you goto the site it will exicute the else part of the code but if your already on sitea or b and you click a link it will not I am a newby using php as the backbone for my web design, with a help from phpFreeks, I have come along way in a short time. Below is a short script of two buttons created with php, how can I use the buttons to link to a new web page (similar to using "href" in html)? I would like to use the php created buttons to keep the general look and feel to my site the same through. In advance, thank you for the support... This is the part in my normal page that shows the buttons: echo "<form action='processButtonsDdr.php' method='POST'> <input type='submit' name='display_button' value='homepage' /> <input type='submit' name='display_button' value='new entry' /> This is a snippet from my two button process page: <?php if($_POST['display_button'] == "home page") { ????????????????? // what do I enter in this area to point the button to another webpage? } else { ????????????????? } ?> Man, I'm having a rough week with questions--if you're following at home. Basically matching a Coach's first and last name to another table, which if matched will yield information about that coach's team. Code: [Select] // or get user by username $current_user = wp_get_current_user(); $current_first = $current_user->user_firstname; $current_last = $current_user->user_lastname; $current_id = $current_user->ID; echo '<div class="contact_form">'; echo $current_first . ' ' . $current_last .' :: '; $query = "SELECT * FROM schools WHERE coachFirst='".$current_first."' AND coachLast='".$current_last."'"; $result = mysql_query ($query); if(!$result) { echo 'There is not a match for your name.'; } else { while($school= mysql_fetch_array($result)) { echo $school['school'] . ' ' . $school['id']; include(ABSPATH ."wp-content/plugins/my-team/form.php"); } echo '</div>'; echo '<div class="roster">'; include(ABSPATH ."wp-content/plugins/my-team/roster.php"); echo '</div>'; } What I am looking for is that if any field in a database is empty, the form comes back and puts in the word "empty" into the web page, but not the database. I got this right now, it shows the first part fine, but the second part it doesn't show the "Empty" comment... I don't understand why... as far as I can tell the code is fine... Code: [Select] <?php //Nonconformity, Disposition, Comments and Comments & Additional Details echo '<div id="box3">'; if (!empty($row['Nonconformity']) || !empty($row['Disposition']) || !empty($row['Comments']) || !empty($row['CommentsAdditional_Details'])) { echo '<div id="non"><span class="b">Nonconformity: </span><br />' . $row['Nonconformity'] . '</div>'; echo '<div id="dis"><span class="b">Disposition: </span><br />' . $row['Disposition'] . '</div>'; echo '<div id="comm"><span class="b">Comments: </span><br />' . $row['Comments'] . '</div>'; echo '<div id="comma"><span class="b">Comments and/or Additional Details: </span><br />' . $row['CommentsAdditional_Details'] . '</div>';} else if (empty($row['Nonconformity']) || empty($row['Disposition']) || empty($row['Comments']) || empty($row['CommentsAdditional_Details'])) { echo '<div id="non"><span class="b">Nonconformity: </span><br />Empty</div>'; echo '<div id="dis"><span class="b">Disposition: <br /></span>Empty</div>'; echo '<div id="comm"><span class="b">Comments: <br /></span>Empty</div>'; echo '<div id="comma"><span class="b">Comments and/or Additional Details: </span><br />Empty</div>';} echo '</div>'; ?> I am creating a form from a main table. Some of the fields in that table will be populated from information in another table (table2). On the form, I created a radio button with the value set to the ID of table2, and the text following that as the label. My problem is that I'd like the data to span several columns, say 5 items in the first column, 5 in the second, and the rest in the 3rd. Here is the code I used to populate the form: Quote <tr><td>Select one:</td><td><?php do { ?><input name="mom_ed" type="radio" value="<?php echo $row_degree['degreeID']; ?>" /><?php echo $row_degree['degree']; ?><?php } while ($row_degree = mysql_fetch_assoc($degree)); ?></td></tr> Can someone help me figure out how to do this? Thanks! What I want is basicly a newspaper function. I have a table like this: name hone website email name1 hone1 website1 email1 So what i want is creating a mail link that takes the 2 mailadresses from my table. 1 email with 2 reciepts. Just like you seperate them with the ; in you mailclient mailto:email; email1 Hoping someone can help, I think it is not that hard, I am just a nOOb I have created code that allows a table of 'X' rows and 'Y' columns to be made (the user enters the X and Y value) with each table cell being uniquely identified through name as (X, Y). Each cell is has a value of 5 and all cells needs to be filled in before the table is submitted, which is where the problem arises. How exactly would one be able to verify that every cell has been filled and then calculate the sum of all the values entered into the cells for all those which have the same X value? The code to generate the table is as follows: echo "<td align='left'><b>$X<b></td>"; For($Y = 1; $Y <= $num; $Y++) { ?> <td align="center"><input type="text" name="<?php echo "$X,$Y";?>" value="<?php echo 5; ?>" /> </td> <?php } Thanks. Hello Im trying to achieve the following output (see the below table. Then on a new row have the next 4 pieces of data that is pulled from the database. So i want the table to automatically have a new row after every 4 cells e.g. 1st piece of data 2nd piece 3rd piece 4th piece 5th piece of data 6th piece 7th piece 8th piece etc etc, until there is no more results within the database to pull back, i guess its a bit like pagination but rather rowination Any one point me in the right direction on what i need to do This topic has been moved to HTML Help. http://www.phpfreaks.com/forums/index.php?topic=307577.0 Hi Guys, I am looking for a way to format excel cells using PHP, I am exporting mysql data to excel file using below method: $fields = array("Date", "Time In", "Time Out", "Hours", "Project", "Component", "Sub-Component", "Work Done", "Supervisor Changes", PHP_EOL); file_put_contents($filename, implode("\t", $fields), FILE_APPEND); Now I want to make BOLD all this header fields, so please help me to this construct.. Thank you Hi wondered if someone could help me i have this code: if (isset($data['product_image'])) { foreach ($data['product_image'] as $image) { $image = $image.".jpg"; $image = str_replace (" ", "", $image); $filename = '/home/purchase/public_html/fancydresscostumesonline.co.uk/image/'. $image; if (file_exists($filename)) { $this->db->query("INSERT INTO " . DB_PREFIX . "product_image SET product_id = '" . (int)$product_id . "', image = '" . $this->db->escape($image) . "'"); } else { $this->db->query("INSERT INTO " . DB_PREFIX . "product_image SET product_id = '" . (int)$product_id . "', image = 'no_image.jpg'"); } } } This part of the code adds a jpg at the end of the product_image additional images so in my csv the 10 columns which have additional numbers for example in my csv it has: say 00532 so this code adds 00532.jpg once imported the the next part which is the else statement no_image.jpg adds a no_image.jpg but instead of it inserting a no_image.jpg for all the blank cells i would like it to SKIP the blank cells for the additional images which is product_image so if no number in the cell it SKIPS it. but have no clue how to do it. Hope someone can help Regards, Aaron I don't get the logic behind the construct. I can't ever see myself using this because it doesn't make sense when I code it. I understand isset($var) and why I should use it sometimes to avoid undefined messages. But with empty() it makes more sense to always test the variable directly because if the value is NULL, 0, '', or false then it evaluates as TRUE. Is there any situation where empty should be used always? I have search page in the form of search.php?q=query, as the php script calls for other files and a long process. When visiting search.php directly, the value of q is indeed null, and it makes a long loop and use lots of cpu. How to kill the script or redirect to the main page when visiting search.php? i have made query and i want replace with no data N/A i have tryed with swich but no luck Code: [Select] if (($row['name']) = empty) { echo('n/a'); } Hi everyone! I'm new to PHP and needed from you. I have the following code that I can't figure out why it doesn't work on the last elseif. If I comment out the first elseif (line 19-39), it does go through the last elseif. Can someone here help? Thank you!!! The content of Instructors.txt as follow: ID#|fName lName|email_address|course1:course2:course3 ID#|fName lName|email_address|course1:course3 ID#|fName lName|email_address|course1:course2:course4 ID#|fName lName|email_address|course2:course3:course5:course6 <?php //If we submitted the form if(empty($_POST['Location'])) { $FH = fopen("Locations.txt", "rb"); print "<FORM name=\"myForm\" action=\"test4.php\" method=\"POST\">\n"; print "<P> Location:\n"; print "<select name=\"Location\">\n"; print "<option value=\"\">-- Select --\n"; while (!feof($FH)){ $line_of_text = fgets($FH); $line = explode('|', $line_of_text); print "<option value=$line[1]>$line[1]"; } fclose($FH); print "<input type=\"submit\" value=\" Next 1 \">\n"; exit(); } elseif(empty($_POST['Instructor'])) { $location = ($_POST['Location']); $FH = fopen("Instructors.txt", "rb"); print "<FORM name=\"myForm\" action=\"test4.php\" method=\"POST\">\n"; print "<P> Location: <input type=text value=$location>\n"; print "<P> Instructor: \n"; print "<select name=\"Instructor\">\n"; print "<option value=\"\">-- Select --\n"; while (!feof($FH)){ $line_of_text = fgets($FH); $line = explode('|', $line_of_text); if ($line[0] == "$location") { print "<option value=\"$line[1]\">$line[1]\n"; } } fclose($FH); print "<input type=\"submit\" value=\" Next 2 \">\n"; exit(); } elseif(empty($_POST['Course'])) { $location = ($_POST['Location']); $instructor = ($_POST['Instructor']); $FH = fopen("Instructors.txt", "rb"); print "<FORM name=\"myForm\" action=\"test4.php\" method=\"POST\">\n"; print "<P> Location: <input type=text value=$location>\n"; print "<P> Instructor: <input type=text value=\"$instructor\">\n"; print "<P> Course: \n"; print "<select name=\"Course\">\n"; print "<option value=\"\">-- Select --\n"; while (!feof($FH)){ $line_of_text = fgets($FH); $line = explode('|', $line_of_text); if ($line[1] == "Bert Vandenber") { $course = explode(':', $line[3]); for ($i=0; $i<count($course); $i++) { print "<option value=\"$course[$i]\">$course[$i]\n"; } } } fclose($FH); print "<input type=\"submit\" value=\" Next 3 \">\n"; exit(); } ?> |
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