php trim 删除空格字符与指定字符
- WBOYOriginal
- 2016-06-02 09:14:111299browse
以前没看trim函数以为他只能删除空白,今天发现它还可以删除"" - null.
"t" - tab ,"n" - new line ,"x0b" - 纵向列表符 ,"r" - 回车 ," " - 普通空白字符,以及用户指定字符.
定义和用法:trim() 函数从字符串的两端删除空白字符和其他预定义字符,可选,规定要转换的字符串,如果省略该参数,则删除以下所有字符:
"" - null,"t" - tab,"n" - new line,"x0b" - 纵向列表符,"r" - 回车," " - 普通空白字符,实例代码如下:
{$str}";
//
";
echo $str1;
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