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PHP - Replace Line In File
hi, im using the following code to read the content of a file, and then add a line to the end of the file.
Code: [Select] $file = dirname(dirname(dirname(__FILE__))).'/includes/settings.php'; $read = fopen($file, 'r')or die('Opening Error'); $content = fread($read, filesize($file)); fclose($read)or die('Close Error'); if(isset($_POST['cat_bg'])) { $write = fopen($file, 'w')or die('Opening Error'); $cat_bg = $_POST['cat_bg']; $new_content = $content.'$color[\'cat_header\'][\'background\'] = '.$cat_bg.';'; fwrite($write, $new_content)or die('Write Error'); fclose($write); } however i would like to delete a line from the file before the content in inserted as the new line i am inserting is a duplicate variable with a different value. Can anyone help? Similar TutorialsThe title says it all,..well as all u can see, there are many methods to accomplish this done but not before undergoing through a heavy tasking process. For instance, 1. Open the file 2. Reads the content of the file into array. 3. Find out the desire line of text that we want to replace. 4. Make that line of text as variable and assigns with the new data(that we want to replace) as its values. 5.open another file. 6.Write the whole contents to the file opened in 5. 7. Put the contents back to the file of original. Can anyone contributes a better way to get this done? Like replace/delete a specific line without affecting other characters or anything therein? Thanx. P.S reading and using str_replace to make the alteration always ends up in giving some kind of result beyond desired after the first round of code execution. what im trying to do is take a youtube embed code find the URL code for that video and remove all other parts of the code keeping only the URL of the video after i get the URL by it self then replace the http://www.youtube.com/ part of the URL with http://i2.ytimg.com/vi/ to do this i know that i need something like this to get the URL of the video http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+) but how to only return just the URL is something idk how to do then use str_replace http://www.youtube.com/(?:v|cp)/" with http://i2.ytimg.com/vi/ so in the end im asking if anyone know how to remove all other codes i dont want and only keep the URL this may have to be done using "regex" im not sure as i dont know to much about regex and what it can do but does sound like it would help lol Hi! Basically, I'm making a PHP file that lists things from a file, so if the file contained; '@-Line 1-@@-Line 2-@' it would produce <li><a href="#">Line 1</a></li><li><a href="#">Line 2</a></li>, but I want it so it changes the coding for 1 of every 2 lines. So I've came up with this code: $myFile = "list.txt"; $fh = fopen($myFile, 'r'); $theData = fread($fh, 100); fclose($fh); $oldtxt = array("@-", "-@"); $newtxt = array('<li><a href="#">','</a></li>'); $newData = str_replace($oldtxt, $newtxt, $theData); $array = explode("</li>", trim($newData)); $lineno = count($array); $linenofinal = $lineno - 1; for($i=1;$i<$linenofinal;$i++){ if(($i % 2)=='0'){ } } The bit that I'm stuck on is inside the if statement. How could I get it to replace for example <li> in line $i with <li class="1in2"> Thanks in advance, Daviga404 =D In this multi file upload form, choose three images, click submit and preview the images on the preview page. If the user wishes to delete or replace an image, click edit and the form will go back to the previous page. Select the replace radio button for example on one of the three images and select a new image from the file input prompt and click submit. The form will go to the preview page again to display the images. During this process the image names are being input into a table and the images are being moved to a directory. The table is `id` AUTO_INCREMENT, `image0` `image1` `image2` `status` So input name='image[image0]' can be directed to table `image0` and so on. The code for keep and delete work fine, but how do I replace an image? I have two foreach blocks. The first one deletes the image file from the directory and deletes the image name from the table, but the second foreach dose not move the new image file into the directory. Thanks. <input type='radio' name='image[image0]' value='keep' checked='checked'/> <input type='radio' name='image[image0]' value='delete' /> <input type='radio' name='image[image0]' value='replace' /> <input type="file" name="image[]" /> <input type='radio' name='image[image1]' value='keep' checked='checked'/> <input type='radio' name='image[image1]' value='delete' /> <input type='radio' name='image[image1]' value='replace' /> <input type="file" name="image[]" /> <input type='radio' name='image[image2]' value='keep' checked='checked'/> <input type='radio' name='image[image2]' value='delete' /> <input type='radio' name='image[image2]' value='replace' /> <input type="file" name="image[]" /> <?php if (isset($_POST['status'])) { $status = $_POST['status']; $confirm_code = $status; #--------------------------- replace -------------------------------------------- if (isset($_POST['submitted']) && ($image = $_POST['image'])) { foreach($image as $imageKey => $imageValue) { if ($imageValue == 'replace') { $query = "SELECT $imageKey FROM table WHERE status = '$status' "; if($result = $db->query( $query )){ $row = $result->fetch_array(); } unlink( UPLOAD_DIR.$row[0] ); $query = "UPDATE table SET $imageKey = '' WHERE status = '$status' "; } } foreach($image as $imageKey => $imageValue) { if ($imageValue == 'replace') { $filenm = $_FILES['image']['name']; $file = $_FILES['image']['tmp_name']; move_uploaded_file($file, UPLOAD_DIR . $filenm); $filename[] = $filenm; $query = "INSERT INTO table VALUES ('','$filename[0]','$filename[1]','$filename[2]','$confirm_code')"; } } } } ?> I have a script that reads a .gz file into an array and prints the name of each record but will not work on larger files. Is there a way to read 1 line at a time? Here is the code I have so far. Code: [Select] <?php if ($handle = opendir('.')) { print "<ol>"; while (false !== ($file = readdir($handle))) { if($file != '..' && $file!="." && $file!="start_update.php" && $file!="sharons_dbinfo.inc.php" && $file!="root.php" && $file!="read_directory.php" && $file!="read_dir.php" && $file!="new_category.php" && $file!="index.php" && $file!="file_count.php" && $file!="dir_loop2.php" && $file!="dir_loop1.php" && $file!=".htaccess" && $file!="Answer.txt" && $file!="Crucial_Technology-Crucial_US_Product_Catalog_Data_Feed.txt"){ $filename = $file; $go = filesize($filename); if($go >= 1){ $filename2 = explode("-", $filename); $filename2 = $filename2[0]; echo str_replace("_"," ",$filename2) . ' | Filesize is: ' . filesize($filename) . ' bytes<br>'; $gz = gzopen($filename, 'r'); $lines = gzfile($filename,10000); foreach ($lines as $line) { $line2 = explode(",", $line); $line2 = str_replace("," , "-" , $line2); echo "<li>".str_replace("," , "-" , $line2[4])."</li><br>"; } } } } closedir($handle); } ?> </ol> I wanted to replace a strings in a large text file .. what would be the fastest way ?! e.g the text file contains .. INSERT INTO `subjects` VALUES (1, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (2, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (3, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (4, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (5, 'some text here', 'some text here', 'some text here'); I wanted to replace the string " VALUES (1, " with "VALUES (" in each line .. I'm new in PHP so any response would be much appreciated .. thanks Hello, I'm trying to read the first line of some large files by PHP, which means, the ideal solution does not work: Quote $content = file($file_import); $fields = explode(",", $content[0]); Quote Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 110 bytes) in C:\wamp\www\exchange\admin\import.php on line 55 Is there any other way to read only the first line without opening the whole file? Thanks!! So I'm basically done an assignment, however I'm having the biggest brainfart at the moment. For the life of me I cannot remember how to "jump line" in a file and have to put "end" at the end of my txt files. Also I have to put a break in my code which messes up my formatting:
$coursedata = explode('
', rtrim($coursedata));
$studentdata = explode('
', rtrim($studentdata));
fwrite($fp, $number.'||'.$_POST['course'].' '.$content);Here is the main code below for the script:
<html>
<head>
<?php
$success = 0;
$number_of_registered = 0;
$course_array = getdatafile('courses.txt');
$registered_array = getdatafile('register.txt');
#______________global variables____________________
function getdatafile($file) {
# code...
$coursedata = file_get_contents($file);
$coursedata = explode('
', rtrim($coursedata));
unset($coursedata[count($coursedata) - 1]);
$course_array = array();
foreach($coursedata as $row) {
$course_array[] = explode('||', $row);
}
return $course_array;
}
#_____________functions_______________________
if (isset ($_POST['name']) and isset ($_POST['number']) and isset ($_POST['course'])) {
#________________test if the post exists
$name = $_POST['name'];
$number = $_POST['number'];
$found = 0;
$findregistered = 0;
for ($i = 0; $i < sizeof($registered_array); $i++) {
if ($registered_array[$i][0] == $_POST['number'] && $registered_array[$i][1] == $_POST['course']) {
# ___________test if the student is enrolled in this course
$findregistered = 1;
}
if($registered_array[$i][1] == $_POST['course']) {
#________counter of the number registered in this course
$number_of_registered++;
}
}
for ($i = 0; $i < sizeof($course_array); $i++) {
if ($course_array[$i][1] == $_POST['course']) {
# ______________this test if the number of registered is the max
$course_name = $course_array[$i][0];
$findcourse = 1;
if($number_of_registered < $course_array[$i][2]) {
$number_max = 0;
}
else {
$number_max = 1;
}
}
}
$studentdata = file_get_contents('students.txt');
$studentdata = explode('
', rtrim($studentdata));
for ($i = 0; $i < sizeof($studentdata); $i++) {
list($studentname, $studentnumber) = explode("||", rtrim($studentdata[$i]));
if (strtoupper($name) == strtoupper($studentname) && strtoupper($number) == strtoupper($studentnumber)) {
$found = 1;
if ($findcourse == 1 && $findregistered == 0 && $number_max == 0) {
# _____________________do all the tests to record the student in the course("register.txt") and do it if all the test are checked
$success = 1;
$content = file_get_contents('register.txt');
$fp = fopen('register.txt', 'w');
fwrite($fp, $number.'||'.$_POST['course'].'
'.$content);
fclose($fp);
echo "<title>".strtoupper($name).",".strtoupper($studentname)."</title>";
}
}
}
}
?>
<style>
body, p{padding: 0;margin: 0;}
</style>
</head>
<body>
<form action="index.php" method="POST">
<?php
if (isset ($_POST['course'])) {
$course = htmlentities ($_POST['course']);
# ___________________print the information of rgester in the screen for
if ($success == 1) {
echo "You have successfully enrolled in $course_name, $course!";
}
if($found == 0) {
echo 'The credentials you have entered are incorrect, please try again.';
}
else {
if($findregistered == 1) {
echo 'You have already enrolled in this course.';
}
else {
if($number_max == 1) {
echo "Sorry $course_name, $course is full, please select another course.";
}
}
}
}
?>
<p>Courses</p>
<p><input name = "name" placeholder = "Student Name" type = "text"></p>
<p><input name = "number" placeholder = "Student Number" type = "text"></p>
<p><select name = "course" size = "1">
<option id = "select">-- Select Course --</option>
<?php
for ($i = 0; $i <sizeof($course_array); $i++) {
$number_of_registered1 = 0;
for ($j = 0; $j < sizeof($registered_array); $j++) {
if($registered_array[$j][1] == $course_array[$i][1]) {
$number_of_registered1++;
}
}
$a = '<option value = "'.$course_array[$i][1].'">'.$course_array[$i][0].' registered:'.$number_of_registered1.'</option>';
echo $a;
}
?>
</select></p>
<p><input type = "submit" value = "Send"><input type = "reset" value = "Clear"></p>
</form>
</body>
</html>
Attached Files
courses.txt 94bytes
0 downloads
register.txt 3bytes
0 downloads
students.txt 103bytes
0 downloads
index.php 4.19KB
0 downloadsHi I need to read a file and if a line match then proceed, file have content like this file.txt Code: [Select] this is line one this line two and this line three my code: $content = file_get_contents("file.txt"); if (strstr("this line two", $content)) { echo 'matched'; } else { echo 'not matched'; } but this always give not matched. any help please i am trying to pull a .txt file for a class assignment and it is pulling everything except for line 1 any suggestions would be great html: <html> <head> <title>Weekly Report</title> <link rel ="stylesheet" type="text/css" href="sample.css" /> </head> <body> <h1>Weekly Report</h1> <p> <form action = "weeklyReport1Boles.php" method = "post" > <p> <input type = "submit" value = "Display the Report" /> </p> </form> </body> </html> txt.file 1 236.00 2 284.00 3 148.00 4 128.00 5 0.00 6 110.00 7 0.00 8 php file: <?php $total = $_POST['total']; $avgDailyIncome = $_POST['avgDailyIncome']; $badDays = $_POST ['badDays']; $paintFile = $_POST ['paintfile']; $nextDay = $_POST['nextDay']; $paintFile = fopen("weeklyDataBoles.txt","r"); $week = fgets($paintFile); $total = 0; for ($count = 1; $count <=8; $count = $count +1) { $nextDay = fgets($paintFile); $total = $total + $nextDay; } $avgDailyIncome = $total/7; print("<p>TOTAL INCOME FROM PAINT CONTRACTS: "); print("$".number_format($total, 2)."</p>"); print("<p>AVG DAILY INCOME FROM PAINT CONTRACTS: "); print("$".number_format($avgDailyIncome, 2)."</p>"); print("<p>NUMBER OF DAYS with NO INCOME: $badDays.</p>"); ?> </body> </html> Hello everybody! Keep in mind I'm new to PHP but get the basics I'm trying to collect email addresses from a web-form that gets filled out on a website into a simple txt file on the server. The problem is the emails get appended one right after the other with no spaces so it looks like "user@server.comuser2@server.comuser3@server.com" and so on. What I'm trying to do is either separate them by a comma, or put them on a new line but whatever I try, it will not accept it. Anyway, here is the code that I have: Code: [Select] $fp = fopen("/home/fullertr/public_html/email_collector.txt","a"); fwrite($fp,$_POST['visitormail' . "\n"]); fclose($fp); unset($_POST); Thanks for any help! The situation is that I have a large string with some identifiers to say "replace me" with something else. My goal is to replace the values, but if one replacement includes one of the other keys, I don't want to replace it.
For example:
<?php $str = 'some blob ~abc~ followed by ~def~'; $arr_orig = array( '~abc~', '~def~' ); $arr_new = array( 'value~def~', 'blah' ); echo str_replace( $arr_orig, $arr_new, $str ); ?>This will echo: some blob valueblah followed by blah But that's not what I'm trying to accomplish. Basically, I want ~abc~ to be replaced with the literal: value~def~ and for the ~def~ that happens to be part of that string to NOT be replaced. I hope what I'm asking is clear. Basically, preg_replace/str_replace with arrays seems no different than just doing a FOR loop and replacing ~abc~ and then ~def~. But that's not what I need. I'm hoping that if ~abc~ is replaced with text that happens to be another identifier -- ~def~, ~xyz~, whatever -- that this already replaced text is not again replaced. Is there a built-in function to do something like this? If not, should I just parse the whole string and count characters or something? Seems like a pain (and slow!) Hi guys. im using this line to log any users that log into my site. It writes to the log correctly however it doesn't leave a new a line. Can anyone see what ive done wrong with my code. thanks. Code: [Select] fwrite($fh, $_SESSION['username'] . ' at ' . strftime('%c') . "\n"); Hi guys, I have script which scraps content from web and writes it down in a text file, now everything seems to be okay. Its scraps and writes well but the problem is when i open that text file one weird character keeps coming after some words which i don't know about. I have attached the text file, will you guys please look at it and tell me how to replace that square looking character into new line in text file. Hi everyone. Well, i need help how to check a file line by line, (each line contains 1 ip address) and compare it with a variable. I have written some code but it doesn't work. Please help!! Code: [Select] $refile=''; while(!feof($file)) { $refile=fgets($file); if (strcmp($refile,"YES") == 0) echo $refile ."OK". "<br />"; else echo $refile . "NO OK ". "<br />"; } fclose($file); ?> Hi, Have a text file that is being read. I want to print the contents however I want each line of the text file to appear on a new line in the browser. So far $str = file_get_contents('records.txt'); $lines = explode("\n", $str); echo $lines[0]; Help appreciated Hi to everyone. So, I have a little php code that reads line by line from a txt file, specifically i have 1 IP address for each line, and compares it with the current user's IP. It's like a little blacklist code. But it doesn't work. Can anyone see what i am doing wrong? Code: [Select] $file = fopen("ipblacklist.txt", "r") or exit("Unable to open file!"); //Output a line of the file until the end is reached $ipblacklist=''; $refile=''; while(!feof($file)) { if (fgets($file)== $_SERVER['REMOTE_ADDR']) $ipblacklist='error'; $refile=fgets($file); } fclose($file); Thank you in advance I'm ok with PHP but probably not half as good as some of you guys on here. I am basically trying to find a way to grab a line from a huge and I mean huge text file.... its basically a list of keywords I want to call by line number but without preferably going through them all before I get to that line.....otherwise couldmcrash my server obviously. At the moment im using this Code: [Select] $lines = file('http://www.mysite.com/keywords.txt'); // Loop through our array, show HTML source as HTML source; and line numbers too. foreach ($lines as $line_num => $line) { echo "$line_num"; } This works but im sure theres gotta be a better way of doing to save on usuage because this is putting the whole file into the memory and if I can simply say to php give me line number 97, would umm RULE.... Hope you guys can come up with a solution as your much smarter than me ty |
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