Home Backend Development PHP Problem How to remove leading and trailing spaces in php

How to remove leading and trailing spaces in php

Mar 08, 2021 am 11:27 AM
php

在php中,可以通过trim()函数来去掉首尾空格;该函数的作用是移除字符串两侧的空白字符或其他预定义字符,其使用语法是“trim(string,charlist)”,参数string规定要检查的字符串,参数charlist规定从字符串中删除哪些字符,如果省略该参数,则可移除空格、回车、换行、垂直制表符等预定义字符。

How to remove leading and trailing spaces in php

本文操作环境:Windows7系统、PHP8、Dell G3电脑。

php去掉首尾空格:

trim() 函数移除字符串两侧的空白字符或其他预定义字符。

相关函数:

ltrim() - 移除字符串左侧的空白字符或其他预定义字符。

rtrim() - 移除字符串右侧的空白字符或其他预定义字符。

语法

trim(string,charlist)
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参数

string 必需。规定要检查的字符串。

charlist 可选。规定从字符串中删除哪些字符。如果省略该参数,则移除下列所有字符:

"\0" - NULL
"\t" - 制表符
"\n" - 换行
"\x0B" - 垂直制表符
"\r" - 回车
" " - 空格
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实例

移除字符串两侧的空格:

<?php
$str = " Hello World! ";
echo "Without trim: " . $str;
echo "<br>";
echo "With trim: " . trim($str);
?>
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How to remove leading and trailing spaces in php

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