Maybe your implementation of is_resource() is broken. So please provide an example to reproduce this bug. remove warning in debug_print_var on php-resources (messju) So i would assume this was not fixed in latest release. Latest release is Smarty 2.6.14 Released I am confused and sorry for bothering you!ītw.: PHP Warning: htmlspecialchars() expects parameter 1 to be string, resource given in /on line 49ĭon't report bugs that are fixed in the latest release. I double checked all values and could find no clue what's going wrong Also, you are more than welcome to comment if you know other techniques to remove empty array elements in PHP.Posted: Tue 10:39 am Post subject: around it - with this it worked without it did not. Let me know if there is anything that you would like me to clarify in this tutorial. Esta simple función nos permite recorrer todos los elementos que contiene un array o un objeto. If you don’t want to use the array_filter() function for some reason, you can also loop over the array to remove any empty array element. Una de las funciones más útiles que tenemos en PHP y en prácticamente todos los lenguajes de programación es el foreach.In such cases, you can pass a callback function to the array_filter() function and remove elements accordingly. Different projects may have different criteria for determining what constitutes an empty array element.In this case, you don’t need to pass any callback function. You can simply use array_filter() to remove all array elements which evaluate to false.and if there is no any output from results 'i.e. Let’s recap everything we have covered in this tutorial. I want the first array that contains 4 array with key as paid, Due, Overdue, and Label. On the other hand, the second loop uses unset() to remove array elements pointed out by the current value of $key in the $input array. This is the reason the original arrays stays intact. In the first case, the foreach loop unsets the local variable called $elem.

PHP $input = $input = array('Alex', '', false, null, '0', 'false') The following example will make this concept clearer. When looking over an array it is important to remember that you have to insert the value of original array instead of a local variable created by the foreach loop. You can also loop over an array to remove all elements which are empty or have some other specific value that you want gone. Var_dump(array_filter($input, function($value) */ Removing Empty Array Elements by Looping Over the Array An element would be removed if the callback function returns false for that particular element. If all you want to do is remove empty strings from an array, you will have to pass a custom callback function to array_filter(). Similarly, the value 0 may not be considered to be empty as well. ) */ Remove Empty Array Elements Using array_filter()ĭepending on the needs of current project, the Boolean false value may or may not be considered empty. Print_r(array_values(array_filter($input))) Its because you have nested foreach and you are providing an empty variable, you should check if the variable is array before passing. If you want to re-index the keys, you need to wrap the result of array_filter() in the array_values() function. One thing that you might have noticed is that the keys of the original array why not re-indexed after removing empty array elements. This includes '', 0, false, null and '0'. In the above example, array_filter() removed all array elements which evaluated two false. PHP $input = array('Alex', '', 10, 0, -1, false, null, '0', 'false') The loop wont be executed if terms is false / null /an empty array. foreach works only on arrays and objects, and will issue an error when you try to use it. Basically, any array element whose value evaluates to false will be removed. The foreach construct provides an easy way to iterate over arrays. Without a callback function, array_filter() Will remove all elements like the empty string '', Boolean false, null and zero etc. If you want to remove all array elements whose value evaluates to false, providing a callback function is completely unnecessary. However, this callback function is optional. The array_filter() function is used to filter the elements of an array using a callback function. Remove All Array Elements Which Evaluate to False Using array_filter() Removing Empty Array Elements by Looping Over the Array.Remove Empty Array Elements Using array_filter().Remove All Array Elements Which Evaluate to False Using array_filter().

Php foreach empty array