When you came to this page, you may have been looking for something a little simpler: A function that can check if a small string exists within a larger string starting at a particular index. Using substr_compare() for this can leave your code messy, because you need to check that your...
substr_compare()函數是PHP中的內置函數,它有助於比較從指定的起始位置到指定長度的兩個字符串。 用法: intsubstr_compare($str1, $str2, $startpos, $len, $caseInsensitive) 參數:此函數總共接受五個參數,其中前三個必須提供,其餘兩個是可選的。所有這些參數如下所述: $str1(必填):此參數表示要比較的第...
Compare two strings (case-insensitive = HELLO and hELLo will output the same): <?php echostrcasecmp("Hello","HELLO"); echo""; echostrcasecmp("Hello","hELLo"); ?> Try it Yourself » Example Different return values: <?php echostrcasecmp...
, here is a compare function that compares strings by the case-insensitive method, unless it finds a grade, in which case it correctly sorts by putting "plus" grades first, unmarked grades second, and "minus" grades last. <?php function cmp($a, $b) { $a = preg_replace('@^(a|an...
substr_compare — Binary safe optionally case insensitive comparison of 2 strings from an offset, up to length characters substr_count — Count the number of substring occurrences substr_replace — Replace text within a portion of a string
This means thatstrcasecmp()function accepts two string (comma separated) as input to compare and returns an int (integer). See the following table to understand the above function definition in an easy way: Explanation ofstrcasecmp()function definition ...
数据的比较是用 data_compare_func 进行的。如果认为第一个参数小于,等于,或大于第二个参数时必须分别返回一个小于零,等于零,或大于零的整数。这和 array_diff() 不同,后者使用了内部函数来比较数据。 Example #1 array_udiff() 例子<?phpclass cr
substr_replace(string $string, string $replacement, int $start, ?int $length): 这个用法是将字符串$string中从$start位置开始的$length个字符替换为$replacement字符串。 substr_compare(string $string1, string $string2, int $start, ?int $length, bool $case_insensitive): 这个用法是比较两个字符串$...
This function is case-sensitive. For case-insensitive comparisons, use the strnatcasecmp() function.The following table summarizes the technical details of this function.Return Value: Returns a negative value (< 0) if string1 is less than string2; a positive value (> 0) if string1 is ...
substr_compare() 从指定的开始位置(二进制安全和选择性区分大小写)比较两个字符串。 substr_count() 计算子串在字符串中出现的次数。 substr_replace() 把字符串的一部分替换为另一个字符串。 trim() 移除字符串两侧的空白字符和其他字符。 ucfirst() 把字符串中的首字符转换为大写。 ucwords() 把字符串中每...