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
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
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
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 // // 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); $server_output = … Read more
foreach($array as $key=>$value) { // do stuff } $key is the index of each $array element
In PHP, all variables except objects are assigned by the mechanism called copy-on-write, while objects are assigned by reference. Which means that for the arrays with scalar values simply $b = $a already will give you a copy: $a = array(); $b = $a; $b[‘foo’] = 42; var_dump($a); Will yield: array(0) { } Whereas with … Read more
You’ll have to construct the query-string. <?php $ids = array(1, 2, 3, 7, 8, 9); $inQuery = implode(‘,’, array_fill(0, count($ids), ‘?’)); $db = new PDO(…); $stmt = $db->prepare( ‘SELECT * FROM table WHERE id IN(‘ . $inQuery . ‘)’ ); // bindvalue is 1-indexed, so $k+1 foreach ($ids as $k => $id) $stmt->bindValue(($k+1), $id); $stmt->execute(); … Read more
Both array_push and the method you described will work. $cart = array(); $cart[] = 13; $cart[] = 14; // etc //Above is correct. but below one is for further understanding $cart = array(); for($i=0;$i<=5;$i++){ $cart[] = $i; } echo “<pre>”; print_r($cart); echo “</pre>”; Is the same as: <?php $cart = array(); array_push($cart, 13); array_push($cart, 14); … Read more
It suppresses error messages — see Error Control Operators in the PHP manual.