How to convert array to string in php?

How to convert php array to string: 1. Use the implode() function to return a string composed of array elements. The code is "$str = implode(',', $arr);" . 2. Use a loop to traverse the array elements and concatenate them into a string.

How to convert php array to string

Method one, use The built-in implode function

implode() function returns a string composed of array elements.

Note: The implode() function accepts two parameter orders. However, due to historical reasons, explode() does not work. You must ensure that the separator parameter comes before the string parameter.

Note: The separator parameter of the implode() function is optional. However, for backward compatibility, it is recommended that you use two parameters.

Syntax

implode(separator,array)

Parameters

• separator is optional. Specifies what is placed between array elements. Default is "" (empty string).

• array required. Arrays to be combined into strings.

Note: The implode() function accepts two parameter orders. However, due to historical reasons, explode() does not work. You must ensure that the separator parameter comes before the string parameter.

Example 1:

<?php
// 方法一:implode(glue, pieces)
$arr = [&#39;Lucy&#39;,&#39;Mike&#39;,&#39;Jery&#39;,&#39;Haly&#39;];
$str = implode(&#39;,&#39;, $arr);
   var_dump($str);
?>

Output:

string 'Lucy,Mike,Jery,Haly' (length=19)

Example 2: Separate array elements with different characters

<?php
    $arr = array(&#39;Hello&#39;,&#39;World!&#39;,&#39;I&#39;,&#39;love&#39;,&#39;Shanghai!&#39;);
    echo implode(" ",$arr)."<br>";
    echo implode("+",$arr)."<br>";
    echo implode("-",$arr)."<br>";
    echo implode("X",$arr);
?>

Output:

Hello World! I love Shanghai!
Hello+World!+I+love+Shanghai!
Hello-World!-I-love-Shanghai!
HelloXWorld!XIXloveXShanghai!

Method 2, use a loop to traverse the array elements and concatenate them into a string

<?php
//方法二，利用循环遍历数组元素拼接成字符串
$arr = [&#39;Lucy&#39;,&#39;Mike&#39;,&#39;Jery&#39;,&#39;Haly&#39;];
$str = &#39;&#39;;
foreach ($arr as $key => $value) 
{
	$str .=&#39;,&#39;.$value; 
}
var_dump($str);

?>

Recommended related tutorials: "PHP Tutorial"

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