How to convert a piece of HTML code to plain text without leading and ending spaces in PHP? For example, I would like to convert <div> <b>hello</b> world</div> to a string hello world You may use this piece of code in PHP to strip HTML tags, remove leading and ending spaces and convert special characters […]
Posts tagged PHP
27 posts in total.
How to get the full request URL in PHP?
How to get the full request URL of the page being processed in PHP? If you are sure the request is a http or https one, and the PHP script is executed according to (e.g. by a load balancer or apache reverse proxy) the REQUEST_URI/HTTP_HOST which are set by the client, the PHP script can […]
How to disable PHP short open tags?
Some of my pages has XML tags like ‘<?xml ?>’ which are considered by PHP as short open tags ‘<? ?>’. How to disable PHP short open tags? In PHP, to disable the short open tags, you can set the variable short_open_tags = FALSE; in your php.ini. Reference: short_open_tags in php.ini Answered by Eric Z […]
How to print a line to STDERR and STDOUT in PHP?
In PHP, how to print a string as a line to STDOUT? That is, the string and the newline character, nicely? And similarly, how to print the line to STDERR? In PHP, you may print a line to STDOUT using echo by appending the PHP_EOL to the string: echo $your_msg . PHP_EOL; For example, $ […]
How to get the epoch timestamp in PHP?
In PHP, how to get the epoch timestamp, the number of seconds passed since the epoch? In PHP, you can use the time() function. ts = time(); To get the microsecond together too as a float number, use the microtime(true) function. ts2 = microtime(true); Example: $ php -a Interactive shell php > echo time() . […]
How to process a file line by line in PHP?
In PHP, how to process a file line by line? The file is a plain text line like input.txt. As an example, the process can be to just print it out. In PHP, you can use this code snippet to process a file line by line: if ( ($fhandle = fopen(“./input.txt”, “r”) !== FALSE ) […]
How to install glibc, glibc-common and GD libraries independently?
I already have PHP and nginx installed and running on my on centOS 6.7. Please guide me, how can install glibc, glibc-common and GD libraries independently on my centOS 6.7 without crashing my system? I am not sure how you installed PHP and nginx. If they are installed from CentOS6.7’s Yum repository, you may install […]
How to make WordPress regenerate the thumbnails after I changing the media aspects?
I recently changes the media aspects. The problem is that the existing thumbnails are not changed to the new aspects. How to make WordPress regenerate the thumbnails after I changing the media aspects? The “Regenerate Thumbnails” works like a charm for me: https://wordpress.org/plugins/regenerate-thumbnails/ . It allows you to regenerate your thumbnails after changing the thumbnail […]
How to redirect WordPress search query to Google CSE?
How to redirect WordPress search query to Google CSE? You can configure Google CSE to read the query variable (by default, it is q). Then, in your WordPress’s .htaccess file, add these 2 lines RewriteCond %{QUERY_STRING} ^s=(.*)$ RewriteRule ^ https://www.google.com/cse/publicurl?cx=xyz&q=%1 [R,L] Here, “https://www.google.com/cse/publicurl?cx=xyz” is your CSE’s public URL or the webpage that contains the Google […]
How to allow pre tag in WordPress comments?
How to allow pre tag in WordPress comments? You can add a filter hook for pre_comment_approved: <?php function filter_handler( $approved , $commentdata ) { // inspect $commentdata to determine approval, disapproval, or spam status return $approved; } add_filter( ‘pre_comment_approved’ , ‘filter_handler’ , ’99’, 2 ); ?> Reference: https://codex.wordpress.org/Plugin_API/Filter_Reference/pre_comment_approved Answered by Eric Z Ma.
How to change the maximum execution time and memory size allowed for PHP
I see this message in the error log of httpd: PHP Fatal error: Maximum execution time of 30 seconds exceeded in and PHP Fatal error: Allowed memory size of 268435456 bytes exhausted How to change them to a longer and larger value? To change the allowed maximum memory usage of PHP: Set memory_limit = 256M […]
Question2answer: show excerpt in the RSS feed
There is a “Include full text in feeds:” option in the “RSS feeds” configuration panel but no options/method to only show excerpt instead of the “full text” or nothing for RSS feeds. This need to hack the question2answer source code. Details are in the answer. The changes based on Question2asnwer 1.5.4: diff –git a/qa-include/qa-index.php b/qa-include/qa-index.php […]
Q2A: making the main content div appear before the side panel
After checking the Question2Answer pages’ HTML code, I find that the main div comes after the side panel. How to revert the position of the main div and side panel div? Makes the main content come first in the HTML. You can change the displaying order by overwriting the body_content() function in the theme (that […]
How to install php on Apache on Fedora?
How to install php on Apache on Fedora? The basic support (basic PHP support, no caching, etc.) should be enough. First, install Apache2 (httpd): # yum install httpd Then, enable php support: # yum install php Remember to restart httpd after you install php: # service httpd restart Answered by anonymous.
Tutorial Video for “PHP Function for Fetching RSS Feed and Outputting Feed Items as HTML”
After the post A PHP Function for Fetching RSS Feed and Outputing Feed Items as HTML was originally published, there are some updates such as adding a simple RSS feed caching mechanism and supporting scanning content parts of the feed items for images. Recently, Webucator makes a great tutorial video on introducing the RSS to […]
A PHP Function for Fetching RSS Feed and Outputing Feed Items as HTML
I aggregate all my new posts from several sites into a single RSS feed. Last time I updated my homepage, I came across an idea why not showing these feed items directly on the homepage as HTML content. After some study, I got one single PHP function in my hand that fetches an RSS feed […]
Accelerating WordPress with WP Super Cache, Opcache and Autoptimize
WordPress can be very fast after some effort on performance optimization with the help from its plenty of plugins. Possible ways include using cache to cut down the number of database queries, improves HTML/JavaScript/CSS code, and optimizing PHP’s performance with opcode cache. In this post, we introduce how to speed up WordPress with OPcache, page […]
PHP Photo Gallery Scripts Requiring No Database
It is nice to set up some photo gallery on the web and share with friends and family. Some online services are good and convenient. But if you want to host it on your own domain and control them by yourself, there are also many scripts available. Usually, we want the script simple to use […]
Controlling Display of WordPress Widget with PHP Code
I am always wondering how to display different Widgets in WordPress depending on the page/post/category etc. I ever tried some plugins that is for specific purpose. However, they are not flexible enough for all my needs. For example, I want a widget that contains AdSense ad not display on certain posts that I selected and […]
How to Read File into String in PHP
Read content of a file to string (in this example, we echo it): // Get text from file function get_text($text_filename) { if ($text_filename != “”) { $text = “”; $text_file = fopen($text_filename, “r”); while (!feof($text_file)) { $text = $text . fgets($text_file, 4096); } fclose($text_file); if ( $text != “” ) { echo $text; } } […]
