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php字符串的操作

Jun 06, 2016 pm 07:53 PM
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欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 strim($str,""); 去除字符串两边的特殊字符 ltrim() 左 rtrim() 右 addslashes($str); 自动转移字符串,为特殊字符串加"\" 在插入数据库前使用 stripslashes($str); 对上面函数转义后的

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入

  strim($str,""); 去除字符串两边的特殊字符  ltrim() 左   rtrim() 右

  addslashes($str);   自动转移字符串,为特殊字符串加"\"    在插入数据库前使用

  stripslashes($str);  对上面函数转义后的字符串还原

  addcslashes($str,"特定字符");  对字符串中的特定字符转义,包括汉字

  stripcslashes($str);     对上面的转义还原

  strlen($str);           获取字符串的长度

  substr($str,1,-4);  截取字符串,从第一个字符串开始到倒数第四个

  strcmp($str1,$str2);   按字节比较字符串。相等返回0,1>2则返回值大于0,否则返回值小于0

  strnatcmp($str1,$str2);     按自然排序法进行比较字符串中的数字部分 ,返回值同上

  strncmp($str1,$str2,len);     比较字符串中的前N个字符

  strstr($str,str);    检索字符串  在字符串$str中找到str首次出现的位置都后者末尾的子字符串   strchr($str,str);  从后往前检索

  substr_count($str,str);    检索字串出现的次数

  str_ireplace("原字符串","换后的字符串"$str);     替换字符(不区分大小写)   str_replace() 区分大小写

  explode("@",$str);      分割字符串

  implode("@",$str_arr);     合成上面分割的字符串

php字符串的操作

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