firstStringBetween('This is a [custom] string', '[', ']'); // custom isAnagram 检查一个字符串是否是另一个字符串的变位元(不区分大小写,忽略空格、标点符号和特殊字符)。 就是所谓的字谜 function isAnagram($string1, $string2) { return count_chars($string1, 1) === count_chars($string2...
The PHP string functions are part of the PHP core. No installation is required to use these functions.FunctionDescription addcslashes() Returns a string with backslashes in front of the specified characters addslashes() Returns a string with backslashes in front of predefined characters bin2hex() ...
PHP empty() functionThe PHP empty() function used to check whether the string is empty or not.In PHP the empty() function return true if the variable has empty or zero value and it return false if string has non-empty or non-zero value....
<0 - 如果 string1 小于 string2 >0 - 如果 string1 大于 string2 示例:*/echo"\n";echostrcmp("Hello", "hello");//-1 区分大小写比较(内部进行二进制级别比较)echostrcasecmp("Hello", "hello");//0 忽略大小写比较(内部进行二进制级别比较)/*19、strnatcmp(字符串1,字符串2) 使用一种“自然”...
functionechoit($string) { echo$string; } $func='foo'; $func();// 调用 foo() $func='bar'; $func('test');// 调用 bar() $func='echoit'; $func('test');// 调用 echoit() ?> 也可以用变量函数的语法来调用一个对象的方法。
This function returns a string with whitespace stripped from the beginning of str. Without the second parameter, ltrim() will strip these characters: 该函数返回一个删除了 str 最左边的空白字符的字符串。 如果不使用第二个参数, ltrim() 仅删除以下字符: ...
The strstr() function searches for the first occurrence of a string inside another string.Note: This function is binary-safe.Note: This function is case-sensitive. For a case-insensitive search, use stristr() function.Syntaxstrstr(string,search,before_search) ...
public__toString():string __toString()方法用于一个类被当成字符串时应怎样回应。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 classTestClass{publicfunction__toString(){return'Hello World!';}}echo(newTestClass()); 这个会输出Hello World!。
string str_pad ( string $input , int $pad_length [, string $pad_string = " " [, int $pad_type = STR_PAD_RIGHT ]] ) //This function returns the input string padded on the left, the right, or both sides to the specified padding length. If the optional argument pad_string is no...
String与Array可以结合使用。 $s = '11, 33, 22, 44,12,32,55,23,19,23'; $data = swoole_string($s) ->split(',') ->each(fn(&$item) => $item = intval($item)) /* < 7.4 : function (&$item){ $item = intval($item);} */ ->sort() ->unique() ->join('-') ->contains...