array_diff

PHP 4 >= 4.0.1, PHP 5, PHP 7, PHP 8
array_diff - Computes the difference of arrays
Array Diff Online Tool
Manual
Code Examples

Example #1 array_diff example

Result: Array ( [1] => blue )
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Example #2 array_diff example with non-matching types

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Example #3 of array_diff

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Function array_diff:

Arrays Functions

Most used PHP functions