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PHP - Checking A String For Actual Letters?
Say I have a string (stored in a variable we'll call $mystring) that could be something like this...
"cat / dog / monkey / / / / / / / /" Or this string could also have no real data in it, in which case it would look like... "/ / / / / / / / / /" QUESTION: What is the easiest/most efficient way to run a check on that string to see if there are any non-slash characters in it. In plain english, the check would say, "Are there any letters in this string, or is it only spaces and slashes?" Any ideas? Similar TutorialsI'm certain this has been done a hundred times before, but I have been unable to find any information on an efficient way of doing this: I'm creating a membership system, and the password for new users needs to contains both numbers and letters. How do I go about checking this? The key is not that it contains only numbers and letters, but that it contains both. The password cannot be all letters or all numbers. Know what I mean? Cheers guys and gals. Hey. I been using a function to check if a string contains only letters which is: ctype_alpha But i would like to change it to allow numbers 0 to 9 and the letters is there a function to do that in PHP i can't find it. Hi Community! :-) (Sorry for my average english) I recently started coding in php, till now, i allready have advanced skills in programming with C# and thus, had no problems writing my own script. Still, my script does not really work, i'm trying to check if a file contains a md5(string), but the script never finds the string. This is the script: (please don't mind any security issues, this is just a test. But if you have any tips and tricks to improve the security, i'd be glad to receive them)
<?php
$webname = $_POST["webname"];
$webcode = $_POST["webcode"];
$webpass = $_POST["webpass"];
if (file_exists("web/". $webname . ".html")) {
$file = file_get_contents("web/". $webname . ".html", "r");
if (strpos(md5($webpass),$file) !== false) {
$usergen = fopen("web/" . $webname . ".html", "w") or die("Unable to open file!");
fwrite($usergen, $webcode);
fwrite($usergen, "<!--- ". md5($webpass) . "--->");
fclose($usergen);
echo "Generated! You can view your site under /web/" . $webname . ".html";
}
else
{
echo "The file already exists but you entered the wrong Password.<br> Pressing the \"return\" Button will bring you back without loosing the code you entered.";
}
}
else
{
$usergen = fopen("web/" . $webname . ".html", "w") or die("Unable to open file!");
fwrite($usergen, $webcode);
fwrite($usergen, "<br><!--- ". md5($webpass) . " --->");
fclose($usergen);
echo "Generated! You can view your site under /web/" . $webname . ".html";
}
echo "<FORM><INPUT Type=\"button\" VALUE=\"Back\" onClick=\"history.go(-1);return true;\"></FORM>";
?>
What it does it pretty simple, you enter some html-code that'll be stored in the "webcode" variable, a password, let's say "apple" in "webpass" and the filename is stored in "webname".On first creation, a html-file is created with the <!--- md5(apple) ---> at it's end, the HTML Tags are needed to hide the string from any visitors. If someone wants to edit the File created before, he also enters "apple". Then the string will be looked up as md5(apple) in the file. If the strings match, it's true and the changes should be saved. Whatever i do, though, i'm allways ending up here if i try to edit an existing file: "The file already exists but you entered the wrong Password.<br> Pressing the \"return\" Button will bring you back without loosing the code you entered."; As i said, i'm a newbie, i'd appreciate any tips and help. Thank you in advance! Hi, Im trying to check if this string only contains a-z A-Z and 0-9, but i am not sure it works Code: [Select] if(preg_match("/(A-Z][a-z][0-9]/", $payoutaddress)){ echo("Address not valid!"); }else{ } It will always process the else. but even with other characters it will do the same I'm working on a two-file upload form and want to be able to check the mime types of two filenames in a string variable.
The code below was working when the variable @resume_path contained just one filename. How can I modify this to accommodate two files?
when I echo $resume_path, I get, for example: cover_letter_centerline.doc, cover_letter_ctg.doc
Thanks!
//DO NOT TRUST $_FILES['upfile']['mime'] VALUE !!
//Check MIME Type by yourself.
$finfo = new finfo(FILEINFO_MIME_TYPE);
if (false === $ext = array_search(
$finfo->file($_FILES['resume_path']['tmp_name']),
array(
'txt' => 'text/plain',
'doc' => 'application/msword',
'pdf' => 'application/pdf',
),
true
)) {
throw new RuntimeException('Invalid file format.');
}
echo "Sorry, invalid file format. Please try again.";
echo $ext;
Good day all
My site is hosted on yahoo server. Due to security reason, .htaccess is not allowed. I need to hide (or mask) actual url, or atleast .php file name. Can anyone help.
Warm regards.
Shonali
Hi, I have a file which contains settings for a user. Similar to wordpress except simpler like setting a default email for error messages or something. The idea is that it's used as an installation script for web-ware where someone fills in a form with their database details, my script will hard-code them into the settings file and then delete itself. I'll admit I did get the idea from wordpress. Only the way it's coded currently requires a certain combination of characters at the end and seems really messy. The script looks like this (and does work): $endpos = strpos ( $contents, '"; //replace with name//', $startpos); The settings file looks like this: $hard_name = "Smith"; //replace with name// As you can see I use the comment in the settings file, which follows what I'm actually changing, to find the end of the variable. I am sure there must be a better way of doing things but don't know what. It just seems really inefficient because if the comment is removed the script breaks. Any info and tips would be much appreciated. IceKat Hello, Sorry for my english... Well, I make a smaill website. members has to login and then member can see pictures (saved in a folder). When the admin upload pictures a folder wil be created. To get the actual folders in the "album" folder I use this code. <?php //get the folders $handle = opendir(realpath('../album/Album/.')); while ($direc = readdir($handle)) { if($direc == '.' || $direc == '..') continue; else { echo "\t\t<input type='checkbox' name='map[]' id='map[]' value='" . $direc. "' />" . $direc . "<br />\n"; } } closedir($handle); ?> The admin has to assign the folders wich are allowed to see by a member. I use checkboxes for that. And now my problem: When a member can see folder 1 to 4 and the admin upload 2 new folders and want to give that member to see these 2 new folders I want the following: 6 checkboxes (checkbox 1 > album 1, checkbox 2 > album 2... etc). As is said, this member can see folder 1 to 4, so in the CMS album 1 to 4 has to be checked ans album 5 to 6 not. This is my code for that: <?php $sql2 = "SELECT url FROM url WHERE gebruiker_id =" . $_GET['id'] . " ORDER BY url ASC"; $res2 = mysql_query($sql2); while ($rij = mysql_fetch_array($res2)) { $url = $rij['url']; // mappen ophalen $handle = opendir(realpath('../album/Album/.')); while ($direc = readdir($handle)) { if($direc == '.' || $direc == '..' || $direc == $url) { continue; } echo "\t\t<input type='checkbox' name='map[]' id='map[]' value='" . $direc. "' />" . $direc . "<br />\n"; } closedir($handle); } ?> Now my output is: <input type='checkbox' name='map[]' id='map[]' value='album 2' />album 2<br /> <input type='checkbox' name='map[]' id='map[]' value='album 3' />album 3<br /> <input type='checkbox' name='map[]' id='map[]' value='album 4' />album 4<br /> <input type='checkbox' name='map[]' id='map[]' value='album 5' />album 5<br /> <input type='checkbox' name='map[]' id='map[]' value='album 6' />album 6<br /> <input type='checkbox' name='map[]' id='map[]' value='album 1' />album 1<br /> <input type='checkbox' name='map[]' id='map[]' value='album 2' />album 2<br /> <input type='checkbox' name='map[]' id='map[]' value='album 4' />album 4<br /> <input type='checkbox' name='map[]' id='map[]' value='album 5' />album 5<br /> <input type='checkbox' name='map[]' id='map[]' value='album 6' />album 6<br /> <input type='checkbox' name='map[]' id='map[]' value='album 1' />album 1<br /> <input type='checkbox' name='map[]' id='map[]' value='album 2' />album 2<br /> <input type='checkbox' name='map[]' id='map[]' value='album 3' />album 3<br /> <input type='checkbox' name='map[]' id='map[]' value='album 5' />album 5<br /> <input type='checkbox' name='map[]' id='map[]' value='album 6' />album 6<br /> What do I have to do to check the checkboxes (album 1-4) and not to check the album 5-6??? My guess it has to do with the While in While loop but... Greetings, Ferdi Can you see if a request (post/get) is from a curl request or an actual user? I am trying to defeat a little bit of fraud. I have got a date field in my mysql database with events, and as you know date in MYSQL uses yyyy/mm/dd but I would first like to turn this around to dd/mm/yyyy but also turn this into for example "Tuesday - May 1990" would anyone like to point me into the right direction? Much appreciated! I was hoping someone could help me figure out why my Code: [Select] header('Location: .');works right on my localhost testing computer but not when I load it onto the actual server. Here are the two files in question. The first is a snippet from my index.php controller file. Code: [Select] if (isset($_POST['action']) and $_POST['action'] == 'Edit') { include '../../includes/db.inc.php'; { $id = mysqli_real_escape_string($link, $_POST['id']); $sql = "Select * from s_times where id = '$id'"; $result = mysqli_query($link, $sql); if (!$result) { $error = 'Error fetching service time details ' . mysqli_error($link); include '../../includes/error.php'; exit(); } $row = mysqli_fetch_array($result); $pagetitle = 'Edit Category'; $action = 'editform'; $id = $row['id']; $day = $row['day']; $time = $row['time']; $event = $row['event']; $avail = $row['avail']; $orderby = $row['orderby']; $button = 'Update'; } include 'stimes_modify.php'; exit(); } if (isset($_GET['editform'])) { include '../../includes/db.inc.php'; $id = mysqli_real_escape_string($link, $_POST['id']); $day = mysqli_real_escape_string($link, $_POST['day']); $time = mysqli_real_escape_string($link, $_POST['time']); $event = mysqli_real_escape_string($link, $_POST['event']); $avail = mysqli_real_escape_string($link, $_POST['available']); $orderby = mysqli_real_escape_string($link, $_POST['orderby']); $sql = "Update s_times set day = '$day', time = '$time', event = '$event', avail = '$avail', orderby = '$orderby' where id = '$id'"; if (!mysqli_query($link, $sql)) { $error = 'Error updating service times ' . mysqli_error($link); include '../../includes/error.php'; exit(); } header('Location: .'); exit(); } here is the stimes_modify.php file code Code: [Select] if (isset($_POST['action']) and $_POST['action'] == 'Edit') { include '../../includes/db.inc.php'; { $id = mysqli_real_escape_string($link, $_POST['id']); $sql = "Select * from s_times where id = '$id'"; $result = mysqli_query($link, $sql); if (!$result) { $error = 'Error fetching service time details ' . mysqli_error($link); include '../../includes/error.php'; exit(); } $row = mysqli_fetch_array($result); $pagetitle = 'Edit Category'; $action = 'editform'; $id = $row['id']; $day = $row['day']; $time = $row['time']; $event = $row['event']; $avail = $row['avail']; $orderby = $row['orderby']; $button = 'Update'; } include 'stimes_modify.php'; exit(); } if (isset($_GET['editform'])) { include '../../includes/db.inc.php'; $id = mysqli_real_escape_string($link, $_POST['id']); $day = mysqli_real_escape_string($link, $_POST['day']); $time = mysqli_real_escape_string($link, $_POST['time']); $event = mysqli_real_escape_string($link, $_POST['event']); $avail = mysqli_real_escape_string($link, $_POST['available']); $orderby = mysqli_real_escape_string($link, $_POST['orderby']); $sql = "Update s_times set day = '$day', time = '$time', event = '$event', avail = '$avail', orderby = '$orderby' where id = '$id'"; if (!mysqli_query($link, $sql)) { $error = 'Error updating service times ' . mysqli_error($link); include '../../includes/error.php'; exit(); } header('Location: .'); exit(); } The functionality of both pages seems to be working in relation to editing the database but the page will not redirect back to the main page when it gets back down to the header line. Like I said it works on localhost just not on actual server. I also tried putting in the full URL like this Code: [Select] header('Location: http://www.bbcpa.org/dbsite/admin/stimes/stimes/php');and still got a blank page. The URL in the address bar shows this http://www.bbcpa.org/dbsite/admin/stimes/?editform it should show this http://www.bbcpa.org/dbsite/admin/stimes/ so maybe something is wrong with this line in stimes_modify.php Code: [Select] <form action="?<?php htmlout($action); ?>" method="POST"> anyway any help would be greatly appreciated. Thanks How in php using the preg_replace php function can i allow only the basic english a-z letters, numbers 0-9 and unicode code letters and remove anything else? Hi Guys
I have a regex conundrum that at first I thought would be very easy but then appears to be quite hard :/
I want to match a string with a regex where the regex can only pass if it contains letters and numbers (nothing else) and it has to contain at least one of each.
I've been trying out lookaheads but just can't get it right.
Any help is appreciated.
Drongo
Hello my mysql db got row pageurl pageurl http://www.google.gr http://www.yahoo.com http://www.phpfreaks.com i whant to echo 11,12,13 letter only ***********goo****** but i whant to show and count the ******* how can i do this? any idea? I'm looking for a function that will check a string for letters and spaces...boolean preferibly Does anyone knows if FPDF supports Norwegian letters or not? When I write codes of letters it is not showing letter. Are there any command to specify charset? For example in this code is it possible to specify charset? $pdf=new FPDF(); $pdf->AddPage(); $pdf->SetFont('Arial','',14); $pdf->Write(5,'Følgende '); Would someone tell me how to allow foreign letters, normal english letters and numbers using the preg_replace php function? Hello, I have a script coded in PHP and alot of JavaScript and I have problems with languages like Arabic and Hebrew ( non Latin characters) .. It is showed as question marks in the website like this ( ?????????) and in the database .. I converted the SQL Database from Latin Swedish to UTF-8 in phpmyadmin and now the database is correct but the website is still in question marks . In every HTML code you can see this : ........... content="text/html; charset=utf-8"/> and I tried changing the same php pages to UTF-8 using text editors but nothing happened . any help will be great. thanks. This topic has been moved to PHP Regex. http://www.phpfreaks.com/forums/index.php?topic=331361.0 My script forces all names to start with a capital and lower case for the rest. However, some names have a ' or - in them. For example: Rosie O'Donnell or Carrie-Anne Moss With the script, the "D" in O'Donnell is lower case and the "A" in Anne is lower case. What do I need to do to make them capital? Here is what I am using: Code: [Select] <?php echo ucwords(strtolower($row_persons['last_name'])) ?>, <?php echo ucwords(strtolower($row_persons['first_name'])) ?> |
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