PHP : Determine whether a variable has a non-empty value.

README.md

is_blank

(PHP 5 >= 5.4) is_blank — Determine whether a variable has a non-empty value.

Description

boolean is_blank( mixed $var )

Alternative to empty() that accepts non-empty values:

• 0 (0 as an integer)
• 0.0 (0 as a float)
• "0" (0 as a string)

Parameters

• var — The value to be checked.

Return Values

Returns FALSE if var exists and has a non-empty value. Otherwise returns TRUE.

Installation

With Composer

$ composer require mcaskill/php-is-blank

Without Composer

Why are you not using composer? Download Function.Is-Blank.php from the gist and save the file into your project path somewhere.

composer.json

{
  "name": "mcaskill/php-is-blank",
  "description": "Determine whether a variable has a non-empty value.",
  "license": "MIT",
  "authors": [
    {
      "name": "Chauncey McAskill",
      "email": "[email protected]",
      "homepage": "https://github.com/mcaskill"
    }
  ],
  "keywords": [
    "function"
  ],
  "extra": {
    "branch-alias": {
      "dev-master": "1.x-dev"
    }
  },
  "require": {
    "php": ">=5.4.0"
  },
  "autoload": {
    "files": ["Function.Is-Blank.php"]
  }
}

Function.Is-Blank.php

<?php

if (!function_exists('is_blank')) {
    /**
     * Determine whether a variable has a non-empty value.
     *
     * Alternative to {@see empty()} that accepts non-empty values:
     * - _0_ (0 as an integer)
     * - _0.0_ (0 as a float)
     * - _"0"_ (0 as a string)
     *
     * @param  mixed $var The value to be checked.
     * @return boolean Returns FALSE if var exists and has a non-empty value. Otherwise returns TRUE.
     */
    function is_blank($var)
    {
        return empty($var) && !is_numeric($var);
    }
}