1--TEST-- 2substr_replace() function - array with unset 3--FILE-- 4<?php 5 6$replacement = ['A', 'C', 'B']; 7unset($replacement[1]); 8$newarr = substr_replace(['1 string', '2 string'], $replacement, 0); 9print_r($newarr); 10 11$replacement = ['foo', 42 => 'bar', 'baz']; 12unset($replacement[42]); 13$newarr = substr_replace(['1 string', '2 string'], $replacement, 0); 14print_r($newarr); 15 16?> 17--EXPECT-- 18Array 19( 20 [0] => A 21 [1] => B 22) 23Array 24( 25 [0] => foo 26 [1] => baz 27) 28