Getting STRING Characters value before a character occuring more than once in php
I want to get the value of the last word from a varaible.....
if the variable has a content of ,book,farm,chop,cook
i want to get the value of cook alone after the last , in php
$valt = ",book,farm,chop,cook";
or to get the value from the right hand side before a ',' is encountered... Thanks
$valt = ",book,farm,chop,cook"; echo ltrim(strrchr($valt,','),',');
count_chars - Manual, count_chars — Return information about characters used in a string Counts the number of occurrences of every byte-value (0..255) in string and returns it in various ways. After much trial and error trying to create a function that finds the number of unique echo 'At least one character has been used more than once.' ; Create an empty hash. Scan each character of input string and insert values to each keys in the hash. When any character appears more than once, hash key value is increment by 1, and return the character. Below image is a dry run of the above approach: Below is the implementation of the above approach:
explode() to convert from string to array and use
<?php $arr = ",book,farm,chop,cook"; $a = explode(',', $arr); print_r(end($a));
substr_count - Manual, The maximum length after the specified offset to search for the substring. Looking to give it a challenge, I then ran it on a Mac laptop from 2010 against a 120.5MB string. For one test needle, it found 2385 occurrences in 0.0266 seconds. Another The variable $number_of_full_pattern has the value 3, because the default� String Operators. There are two string operators. The first is the concatenation operator ('.'), which returns the concatenation of its right and left arguments.
Optional solution with
strrpos which finds position of last occurence of
,. After that you can use
substr to get a substring starting from the next position:
$str = ",book,farm,chop,cook"; print_r(substr($str, 1 + strrpos($str, ',')));
strrchr - Manual, strrchr — Find the last occurrence of a character in a string If needle contains more than one character, only the first is used. If needle is not a string, it is converted to an integer and applied as the ordinal value of a character. get last directory in $PATH use $trail to include needle chars including and past last needle Check if a string has all characters with same frequency with one variation allowed Given a string of lowercase alphabets, find if it can be converted to a Valid String by removing 1 or 0 characters. A “valid” string is a string str such that for all distinct characters in str each such character occurs the same number of times in it.
$valt = ",book,farm,chop,cook"; $r = explode(",",$valt); $a = array_key_last($r); print_r($a);
strstr - Manual, Returns part of haystack string starting from and including the first occurrence of If you only want to determine if a particular needle occurs within haystack , use the it is converted to an integer and applied as the ordinal value of a character. Also, strstr() is far more memory-intensive than strpos(), especially with longer� Given a string containing lowercase characters. The task is to print the maximum occurring character in the input string. If 2 or more characters appear the same number of times, print the lexicographically (alphabetically) lowest (first) character.
Find the first repeated character in a string, We need to find the character that occurs more than once and whose Recommended: Please solve it on “PRACTICE ” first, before moving on to the solution. If the character repeats, increment count of repeating characters. Scan each character of input string and insert values to each keys in the hash. Previous: Write a Python function to get a string made of 4 copies of the last two characters of a specified string (length must be at least 2). Next: Write a Python program to get the last part of a string before a specified character.
Return maximum occurring character in an input string , Recommended: Please solve it on “PRACTICE ” first, before moving on to But if we know that our input string will have characters with value from C++; Java; Python; C#; PHP C++ program to output the maximum occurring character If more than one characters have the same count and that count is� If more than one characters have the same count and that count is maximum then the function returns the first character with maximum count in input string. For example if input string is “test sample” then there are three characters with same and maximum count two i.e. “t”, “e” and “s” but our program will result “t” because “t” comes first in input string.
Oracle / PLSQL: REGEXP_COUNT Function, string: The string to search. string can be CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. pattern Matches the nth subexpression found within ( ) before encountering \n. [..] Matches one collation element that can be more than one character. The REGEXP_COUNT function returns a numeric value. Replace every character of string by character whose ASCII value is K times more than it Queries to find the last non-repeating character in the sub-string of a given string Remove characters from a numeric string such that string becomes divisible by 8