How does PHP index associative arrays?

by

Within your user defined array you are assigning the keys manually your array means as

array(1 => 'One',3, 2 => 'Two');//[1] => One [2] => 3 [2] => Two

Here we have two identical index and as per DOCS its mentioned that the last overwrite the first

Syntax “index => values”, separated by commas, define index and values. index may be of type string or integer. When index is omitted, an integer index is automatically generated, starting at 0. If index is an integer, next generated index will be the biggest integer index + 1.

Note that when two identical index are defined, the last overwrite the first.

In order to filter this case you can simply make some changes as

array(1 => 'One',2 =>'Two',3) // array ([1] => One [2] => Two [3] => 3)
array(3,1 => 'One',2 =>'Two') //array ([0] => 3 [1] => One [2] => Two)
array(1 => 'One',2 => 3 ,3 =>'Two')// array([1] => One [2] => 3 [3] => Two)

DOCS CHECK PARAMETERS

More Related Contents:

  1. PHP – File to Associative Array with 1 key and two values attached
  2. Finding cartesian product with PHP associative arrays
  3. In PHP, how do you change the key of an array element?
  4. Compare 2-dimensional data sets based on a specified second level value
  5. Convert backslash-delimited string into an associative array
  6. Is there a way to find out how “deep” a PHP array is?
  7. Interpolation (double quoted string) of Associative Arrays in PHP
  8. Replace keys in an array based on another lookup/mapping array
  9. How to loop through an associative array and get the key? [duplicate]
  10. Associative array, sum values of the same key
  11. How to sort a date array in PHP
  12. Convert an associative array to a simple array of its values in php
  13. PHP combine two associative arrays into one array
  14. Display array values in PHP
  15. PHP – Merge two arrays (same-length) into one associative?
  16. Flip associative array and store new values in subarrays to prevent losing duplicated values
  17. Merge multiple associative arrays and add missing columns with a default value
  18. Iterating over a complex Associative Array in PHP
  19. Generate an associative array from an array of rows using one column as keys and another column as values
  20. Group rows in an associative array of associative arrays by column value and preserve the original first level keys
  21. Custom key-sort a flat associative based on another array
  22. Merge two numerically-keyed associative arrays and preserve the original keys
  23. PHP/SQL Insert Error when using Named Placeholders
  24. php: how to get associative array key from numeric index?
  25. How to use PHP in_array with associative array?
  26. Implementing a simple lookup array
  27. Filter rows of a 2d array by the rows in another 2d array
  28. Conditionally add associative element to array
  29. array_diff to compare two associative arrays
  30. Finding the minimum value’s key in an associative array

Leave a Comment