fwrite

问题 My code is <?php $fp = fopen('test.txt', "a+"); fwrite($fp, 'Cats chase mice'); fclose($fp); ?> but test.txt is still empty. I don't see anything wrong and I don't understand why it's not writing. 回答1: Write this in a console chmod a+w test.txt 回答2: This is a file permissions issue. This will chmod your file to 777 making it writeable. Tested on Linux server: <?php $fp = fopen('test.txt', "a+"); chmod("test.txt", 0777); // try also 0666 or 0644 fwrite($fp, 'Cats chase mice'); fclose($fp); ?>

问题 I am trying to get a variable from the query string and write it to a text file. I have tried like this: <?php $content=( $_GET['var'] ); echo $content; $file = fopen("etlLOG.txt","w+"); echo fwrite($file,$content); fclose($file); ?> I get the following errors: Warning: fopen(etlLOG.txt) [function.fopen]: failed to open stream: Permission denied in E:\Users\george\listener.php on line 8 Warning: fwrite(): supplied argument is not a valid stream resource in E:\Users\george\listener.php on line

问题 I am running a website with a LAMP system. Contents come from a database. For caching purposes, I create files on my webserver (containing cachable contents) (via fwrite() ). Every once in a while I am deleting the cache files (via unlink() ). File creation and deletion is done with a cronjob. My question is: what happens when a visitor to my website is currently browsing (=requesting from webserver) file A.php and I am trying to write to or delete this very same file A.php. To be precise:

问题 Hello what i am trying to do is to reverse a binary file. The type of the file is wav so for example if the channel number is 2 and bits per sample are 16 each time i will copy 32/8 = 4 bytes. The first think to do is copy the header as it is(that part is ok) and then reverse he data. I've created a code to copy the header and then part of the data from the end this 10 times(for testing) but instead of copying 40 bytes it stops at 20 for some reason(even if it would do it 20 times it would

问题 I use some code here, transfer mysql query data into json data and write into a file. where is the problem? why the file is zero kb? while($row = mysql_fetch_array($Query)){ $arr = array ('name'=>$row['name']); $jsondata = json_encode($arr); $countfile="data.txt"; if(!file_exists($countfile)) { fopen($countfile,"w"); } $fp = fopen($countfile, 'r'); fwrite($fp, $jsondata); fclose($fp); } 回答1: Because you're reopening the file as read only $fp = fopen($countfile, 'r'); try $fp = fopen(

问题 I'm trying to build a document out of its various parts. Destination document does not get any content. Can you possibly tell me what I'm doing wrong here ? I have a begin.txt with HTML content and an end.txt which I want to keep having the new code ( newarticle.txt ) added to the beginning of so it flows forward every time a new addition is made. Then I want it all put together into articles.html . <?php $v1 = $_POST["url"]; //You have to get the form data $v2 = $_POST["description"]; $v3 =

问题 I am looking to open up a file, grab the last line in the file where the line = "?>", which is the closing tag for a php document. Than I am wanting to append data into it and add back in the "?>" to the very last line. I've been trying a few approaches, but I'm not having any luck. Here's what I got so far, as I am reading from a zip file. Though I know this is all wrong, just needing some help with this please... // Open for reading is all we can do with zips and is all we need. if (zip

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . I need to write to a specific line in the file without emptying php code. $file="variables.php"; $linecount = 0; $handle = fopen($file, "r"); while(!feof($handle)){ $line = fgets($handle); $linecount++; } $linecount=$linecount-1; echo $linecount; fclose($handle); $handle = fopen($file, "a+");

问题 Update As this.lau_ commented, it seems the problem is that no code is running at all on the server when the first file is running. I guess some configuration only allows one script to be run at once - or only one script per "user". Now I will investigate what can be causing that behaviour on the server. Thank you everyone for your help! . Original question I've got two PHP scripts, on separate files: /* The first file contains */ for($i = 0; $i < 10000; $i++){ $w = fopen($progress_file, "w")

问题 i want to upload large files to my server. I splice these files before upload in max. 1MB chunks. If one chunk is uploaded, this chunk gets appended to the file. On my local server everything works well, but if i test this script on my Webserver (hosted by Strato -.-) the process quits with an Internal Server Error everytime the appended file on the server gets 64MB large. I think its (of course?) caused because of a restriction from Strato. Maybe something with the memory but i cant explain