kuredev · November 18, 2017 09:21 · kuredev · Nov 18, 2017
diff --git a/array_reduce_sample.php b/array_reduce_sample.php
 <?php

 function merge(string $str1 = null, string $str2){
    $str = $str1.$str2;
    return $str;
 }


 $arr = array("str1", "str2", "str3", "str4");

 echo array_reduce($arr, "merge");
 echo PHP_EOL;
 echo array_reduce($arr, "merge", "str0");
	<?php

	function merge(string $str1 = null, string $str2){
	$str = $str1.$str2;
	return $str;
	}


	$arr = array("str1", "str2", "str3", "str4");

	echo array_reduce($arr, "merge");
	echo PHP_EOL;
	echo array_reduce($arr, "merge", "str0");