PHP's get_defined_functions in JavaScript

How to use

You you can install via yarn add locutus and require this function via const get_defined_functions = require('locutus/php/funchand/get_defined_functions').

It is important to use a bundler that supports tree-shaking so that you only ship the functions that you actually use to your browser, instead of all of Locutus, which is massive. Examples are: Parcel, webpack, or rollup.js. For server-side use this is typically less of a concern.

Examples

Please note that these examples are distilled from test cases that automatically verify our functions still work correctly. This could explain some quirky ones.

#	code	expected result
1	var $funcs = get_defined_functions() var $result = Array.isArray($funcs) && $funcs.length > 0	true

Notes

• Returns an array of global function names. Unlike PHP, JavaScript doesn’t distinguish between user and internal functions.

Here's what our current JavaScript equivalent to PHP's get_defined_functions looks like.

module.exports = function get_defined_functions() {
  //      discuss at: https://locutus.io/php/get_defined_functions/
  // parity verified: PHP 8.3
  //     original by: Brett Zamir (https://brett-zamir.me)
  //     improved by: Brett Zamir (https://brett-zamir.me)
  //          note 1: Returns an array of global function names. Unlike PHP,
  //          note 1: JavaScript doesn't distinguish between user and internal functions.
  //       example 1: var $funcs = get_defined_functions()
  //       example 1: var $result = Array.isArray($funcs) && $funcs.length > 0
  //       returns 1: true

  const $global = typeof window !== 'undefined' ? window : global
  $global.$locutus = $global.$locutus || {}
  const $locutus = $global.$locutus
  $locutus.php = $locutus.php || {}

  let i = ''
  const arr = []
  const already = {}

  for (i in $global) {
    try {
      if (typeof $global[i] === 'function') {
        if (!already[i]) {
          already[i] = 1
          arr.push(i)
        }
      } else if (typeof $global[i] === 'object') {
        for (const j in $global[i]) {
          if (typeof $global[j] === 'function' && $global[j] && !already[j]) {
            already[j] = 1
            arr.push(j)
          }
        }
      }
    } catch (_e) {
      // Some objects in Firefox throw exceptions when their
      // properties are accessed (e.g., sessionStorage)
    }
  }

  return arr
}

Think you can do better?

Not unlike Wikipedia, Locutus is an ongoing community effort. Our philosophy follows The McDonald’s Theory. This means that we assimilate first iterations with imperfections, hoping for others to take issue with-and improve them. This unorthodox approach has worked very well to foster fun and fruitful collaboration, but please be reminded to use our creations at your own risk. THE SOFTWARE IS PROVIDED "AS IS" has never been more true than for Locutus.

Now go and: [ View on GitHub | Edit on GitHub | View Raw ]

---

« More PHP funchand functions

Star