function cnSubStr($string,$sublen) { if($sublen>=strlen($string)) { return $string; } $s=""; for($i=0;$i<$sublen;$i++) { if(ord($string{$i})>127) { $s.=$string{$i}.$string{++$i}; continue; }else{ $s.=$string{$i}; continue; } } return $s; }// End Functio...
您可以简单地从字符串末尾的偏移量替换字符串的部分(-1 2-9表示数字,3表示空格、连字符和空格) So $string = 'My name is George 123123123'; $string = substr_replace($string, ' - ', -12, 3); echo $string; gives My name is Geor - 123123123...
$str = “Hello World”;$substring = substr($str, 6, 5);echo $substring; // 输出:World“` 4. 字符串查找和替换:可以使用strpos()函数查找子字符串在字符串中的位置,使用str_replace()函数进行字符串替换。例如: “`php$str = “Hello World”;$pos = strpos($str, “World”);echo $pos; //...
substr_count — Count the number of substring occurrences substr_replace — Replace text within a portion of a string substr — Return part of a string trim — Strip whitespace (or other characters) from the beginning and end of a string ucfirst — Make a string’s first character uppercase...
echo $substring; // 输出结果为123 // str_replace()函数:替换字符串中的部分内容 $text = ‘abc123def456ghi’; $newText = str_replace(‘123’, ‘XYZ’, $text); echo $newText; // 输出结果为abcXYZdef456ghi “` 3. 使用数组函数处理数据 ...
To find the index of a substring in a string in PHP, call strpos() function and pass given string and substring as arguments. The strpos() function returns an integer value of the index if the substring is present in the string, else, the function return
string implode ( string $glue , array $pieces ) substr() 截取字符串 string substr ( string $string , int $start [, int $length ] ) str_replace() 字符串替换操作,区分大小写 mix str_replace(mix $search,,mix $replace,mix $subject[,int &$num]) str_ireplace() 字符串替换操作,不区分大...
string $string [, int $limit = PHP_INT_MAX ] ) //Returns an array of strings, each of which is a substring of string formed by splitting it on boundaries formed by the string delimiter. //此函数返回由字符串组成的数组,每个元素都是 string 的一个子串,它们被字符串 delimiter 作为边界点分...
(column) 把存储的字符串全部小写 SUBSTRING() SUBSTRING(column, start, length) 从column中返回开始start的length个字符(索引从0开始) MD5() MD5(column) 把储存的字符串用MD5加密 SHA() SHA(column) 把存储的字符串用SHA加密 数字函数函数 用法 描述 ABS() ABS(x) 返回x的绝对值 CEILING() CEILING(x) ...
Calendar函数提供了与日历相关的功能。比如，cal_days_in_month()函数可以返回指定月份的天数，cal_info()函数可以返回指定日历的信息。示例代码demo：<?php // 获取当前月份的天数 $month = date('n');$year = date('Y');$daysInMonth = cal_days_in_month(CAL_GREGORIAN, $month, $year);// 输出结果 ...