Can we merge more than two array in php?
❮ PHP Array Reference Show ExampleMerge two arrays into one array: $a1=array("red","green"); Try it Yourself » Definition and UsageThe array_merge() function merges one or more arrays into one array. Tip: You can assign one array to the function, or as many as you like. Note: If two or more array elements have the same key, the last one overrides the others. Note: If you assign only one array to the array_merge() function, and the keys are integers, the function returns a new array with integer keys starting at 0 and increases by 1 for each value (See example below). Tip: The difference between this function and the array_merge_recursive() function is when two or more array elements have the same key. Instead of override the keys, the array_merge_recursive() function makes the value as an array. Syntaxarray_merge(array1, array2, array3, ...) Parameter Values
Technical Details
More ExamplesExampleMerge two associative arrays into one array: $a1=array("a"=>"red","b"=>"green"); Try it Yourself » ExampleUsing only one array parameter with integer keys:
$a=array(3=>"red",4=>"green"); Try it Yourself » ❮ PHP Array Reference (PHP 4, PHP 5, PHP 7, PHP 8) array_merge — Merge one or more arrays Descriptionarray_merge(array If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. If, however, the arrays contain numeric keys, the later value will not overwrite the original value, but will be appended. Values in the input arrays with numeric keys will be renumbered with incrementing keys starting from zero in the result array. Parametersarrays Variable list of arrays to merge. Return ValuesReturns the resulting array. If called without any arguments, returns an empty array. Changelog
ExamplesExample #1 array_merge() example
The above example will output: Array ( [color] => green [0] => 2 [1] => 4 [2] => a [3] => b [shape] => trapezoid [4] => 4 ) Example #2 Simple array_merge() example
Don't forget that numeric keys will be renumbered!
If you want to append array elements from the second array to the first array while not overwriting the elements from the first array and not re-indexing, use the
The keys from the first array will be preserved. If an array key exists in both arrays, then the element from the first array will be used and the matching key's element from the second array will be ignored. array(5) { [0]=> string(6) "zero_a" [2]=> string(5) "two_a" [3]=> string(7) "three_a" [1]=> string(5) "one_b" [4]=> string(6) "four_b" } Example #3 array_merge() with non-array types
The above example will output: Array ( [0] => foo [1] => bar ) See Also
Julian Egelstaff ¶ 13 years ago
[0] = "zero"; ChrisM ¶ 9 months ago
$i=0 ; $i<10000000 ; $i++) { Andreas Hofmann ¶ 9 months ago
JoshE ¶ 6 months ago
How can I merge two arrays in PHP without duplicates?You can use the PHP array_unique() function and PHP array_merge() function together to merge two arrays into one array without duplicate values in PHP.
What is the best method to merge two PHP objects?Approach 1: Convert object into data array and merge them using array_merge() function and convert this merged array back into object of class stdClass. Note: While merging the objects using array_merge(), elements of array in argument1 are overwritten by elements of array in argument2.
What is the difference between array merge and array Combine in PHP?This function is used to merge the elements or values of two or more arrays together into a single array.
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PHP.. Can we merge two arrays?To merge elements from one array to another, we must first iterate(loop) through all the array elements. In the loop, we will retrieve each element from an array and insert(using the array push() method) to another array. Now, we can call the merge() function and pass two arrays as the arguments for merging.
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