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How to remove extra spaces in php

藏色散人
藏色散人Original
2020-08-19 09:12:473156browse

php去除多余空格的方法:首先创建一个PHP示例文件;然后使用语句“preg_replace('/\s(?=\S)/','',$str);”去除指定字符串中多余的空格即可。

How to remove extra spaces in php

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PHP去除多余空格 多个连续空格只保留一个

/**
* 多个连续空格只保留一个
*
* @param string $string 待转换的字符串
* @return unknown
*/
static public function merge_spaces ( $string )
{
    return preg_replace ( "/\s(?=\s)/","\\1", $string );
}<br><br>出处:http://www.open-open.com/code/view/1420711244390 //Delphi有一个函数可以将多余的字符串替换一次,保留其中一个。php就复杂多了,而且我对正则也不是太了解。<br><br>代码经我修改后,达到了我想要的目的:除两个连续空格外,其它的单个不连续空格均被替换。
<?php
header(&#39;Content-type: text/html; charset=utf-8&#39;);
$str = "PHP去除 多余空格 多个连续 空格只保留一个";
$str = preg_replace(&#39;/\s(?=\S)/&#39;,&#39;&#39;,$str); //只保留一个空格,还有(?=\s)这个写法叫“断言”
echo $str;
?>

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