Uses the "substr()" function to extract the last 3 characters from the string stored in '$str1'. The "substr()" function takes two parameters: the string to extract from ($str1), and the starting position of the substring (-3, indicating the third character from the end of the strin...
Find the last occurrence of a character in a string 查找指定字符在字符串中的最后一次出现 strrev() Reverse a string 反转字符串 strripos() Find the position of the last occurrence of a case-insensitive substring in a string 计算指定字符串在目标字符串中最后一次出现的位置(不区分大小写) strrpos()...
<0 - 如果 string1 小于 string2 >0 - 如果 string1 大于 string2 示例:*/echo"\n";echostrcmp("Hello", "hello");//-1 区分大小写比较(内部进行二进制级别比较)echostrcasecmp("Hello", "hello");//0 忽略大小写比较(内部进行二进制级别比较)/*19、strnatcmp(字符串1,字符串2) 使用一种“自然”...
Iterate Through String: A for loop iterates over $s from the beginning to the second-last character (i.e., strlen($s) - 2). For each position $i, it checks if the substring from $i of length 2 matches $last_two_char. Increment Counter: If a match is found, $ctr is incremented...
// Note how we cut the string at a non-Ascii character for demonstration purposes$string=mb_substr($string,0,15);// Connect to a database to store the transformed string // See the PDO example in this document for more information ...
bin2hex() Converts a string of ASCII characters to hexadecimal values chop() Removes whitespace or other characters from the right end of a string chr() Returns a character from a specified ASCII value chunk_split() Splits a string into a series of smaller parts convert_cyr_string() Convert...
date_get_last_errors() 返回日期字符串中的警告/错误。 date_interval_create_from_date_string() 从字符串的相关部分建立 DateInterval。 date_interval_format() 格式化时间间隔。 date_isodate_set() 设置ISO 日期。 date_modify() 修改时间戳。 date_offset_get() 返回时区偏移。 date_parse_from_format(...
dev_t st_rdev deviceID(iffile is character or block special)off_t st_size file sizeinbytes(iffile is a regular file)time_t st_atime timeoflast access time_t st_mtime timeoflast data modification time_t st_ctime timeoflast status change ...
1.调用 mysqli_real_escape_string() 函数之前, 必须先通过调用 mysqli_set_charset() 函数或者在 MySQL 服务器端设置字符集 2.mysqli_character_set_name() 返回当前数据库连接的默认字符编码 0X09 prepare 预编译 通过使用 预编译语句 (prepared statements)和 参数化查询 (parameterized queries)。这些sql语句...
Returns the index of the last occurrence of $needle in the string, and false if not found. Accepts an optional offset from which to begin the search. Offsets may be negative to count from the last character in the string.s('foobarfoo')->indexOfLast('foo'); // 10...