php中ltrim()、rtrim()与trim()删除字符空格实例_php技巧
本文实例讲述了php中ltrim()、rtrim()与trim()删除字符空格的方法。分享给大家供大家参考。具体分析如下:
php中的trim函数不能像asp中的一样,可以自动删除所有空格,PHP专业提供了 rtrim() trim()函数,对此感兴趣的朋友可以参考一下。
PHP实例代码如下:
echo "方括号中为原始字符串:[".$str."]
";
echo "原始字符串长度:".strlen($str)."
";
$str1=ltrim($str);
echo "执行ltrim()之后的长度:".strlen($str1)."
";
$str2=rtrim($str);
echo "执行rtrim()之后的长度:".strlen($str2)."
";
$str3=trim($str);
echo "执行trim()之后的长度:".strlen($str3)."
";
echo "去掉首尾空格之后的字符串:[".$str3."]";
?>
希望本文所述对大家的php程序设计有所帮助。

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