How to install a specific version of package using Composer?
composer require vendor/package:version for example: composer require refinery29/test-util:0.10.2
php
How do I catch a PHP fatal (`E_ERROR`) error?
Log fatal errors using the register_shutdown_function, which requires PHP 5.2+: register_shutdown_function( “fatal_handler” ); function fatal_handler() { $errfile = “unknown file”; $errstr = “shutdown”; $errno = E_CORE_ERROR; $errline = 0; $error = error_get_last(); if($error !== NULL) { $errno = $error[“type”]; $errfile = $error[“file”]; $errline = $error[“line”]; $errstr = $error[“message”]; error_mail(format_error( $errno, $errstr, $errfile, $errline)); } } … Read more
PHP How to determine the first and last iteration in a foreach loop?
If you prefer a solution that does not require the initialization of the counter outside the loop, then you can compare the current iteration key against the function that tells you the last / first key of the array. PHP 7.3 and newer: foreach ($array as $key => $element) { if ($key === array_key_first($array)) { … Read more
htmlentities() vs. htmlspecialchars()
htmlspecialchars may be used: When there is no need to encode all characters which have their HTML equivalents. If you know that the page encoding match the text special symbols, why would you use htmlentities? htmlspecialchars is much straightforward, and produce less code to send to the client. For example: echo htmlentities(‘<Il était une fois … Read more
How to check whether an array is empty using PHP?
If you just need to check if there are ANY elements in the array, you can use either the array itself, due to PHP’s loose typing, or – if you prefer a stricter approach – use count(): if (!$playerlist) { // list is empty. } if (count($playerlist) === 0) { // list is empty. } … Read more
Converting an integer to a string in PHP
You can use the strval() function to convert a number to a string. From a maintenance perspective its obvious what you are trying to do rather than some of the other more esoteric answers. Of course, it depends on your context. $var = 5; // Inline variable parsing echo “I’d like {$var} waffles”; // = … Read more
phpmyadmin – count(): Parameter must be an array or an object that implements Countable
Edit file /usr/share/phpmyadmin/libraries/sql.lib.php using this command: sudo nano +613 /usr/share/phpmyadmin/libraries/sql.lib.php On line 613 the count function always evaluates to true since there is no closing parenthesis after $analyzed_sql_results[‘select_expr’]. Making the below replacements resolves this, then you will need to delete the last closing parenthesis on line 614, as it’s now an extra parenthesis. Replace: ((empty($analyzed_sql_results[‘select_expr’])) … Read more
Insert new item in array on any position in PHP
You may find this a little more intuitive. It only requires one function call to array_splice: $original = array( ‘a’, ‘b’, ‘c’, ‘d’, ‘e’ ); $inserted = array( ‘x’ ); // not necessarily an array, see manual quote array_splice( $original, 3, 0, $inserted ); // splice in at position 3 // $original is now a … Read more
PHP, cURL, and HTTP POST example?
<?php // // A very simple PHP example that sends a HTTP POST to a remote site // $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,”http://www.example.com/tester.phtml”); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, “postvar1=value1&postvar2=value2&postvar3=value3”); // In real life you should use something like: // curl_setopt($ch, CURLOPT_POSTFIELDS, // http_build_query(array(‘postvar1’ => ‘value1’))); // Receive server response … curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $server_output = … Read more
How to find the foreach index?
foreach($array as $key=>$value) { // do stuff } $key is the index of each $array element