php true false

For example, the following code: $str4="php-class,mysql-class,div-css,0,dreamweaver";$s=strtok($str4,',');while($s!==false){ echo $s.""; $s=strtok(',');} while ($s ===true) {} Why can't it be displayed?True where to use it ~ ~Beginners Please

For example, the following code: {code...} while ($ strue) {} cannot be displayed? Where can I use true ~~ For beginners, please take care of O (∩ _ ∩) O ~ Happy New Year ~ My own understanding is :! If 'false' is true, 1. The value is not equal to 2

In php, false true indicates true or false. in php, it is called a boolean data type. It is a common data type. For example, conditional judgment is also a boolean data type, the following is an introduction. Syntax To specify a Boolean value, use

SyntaxTo specify a Boolean value, use the keyword TRUE or FALSE. Both are case insensitive. The code is as follows:Copy code $ Foo = True; // value TRUE to $ foo?> You usually use some operators to return a boolean value and pass it to the

Since PHP was generated in 1994, its syntax is mixed with C, Java, Perl and some of his own programming syntax. Since PHP was generated in 1994, its syntax is mixed with C, Java, Perl and some of his own programming syntax. Therefore, students with

For example, what exactly does true and false in {code...} PHP correspond? For example Var_dump (true =-1); // true What exactly does true and false in PHP correspond? Reply content: For example Var_dump (true =-1); // true What exactly does

Why does "true" output 1, but "false" output nothing? & Lt ;? Php $ a = true; echo & nbsp; "output below & nbsp; true & nbsp; & lt; br & gt;"; echo & nbsp; $ a; echo & nbsp; '& lt; br & gt;'; $ a = false: Why does true output 1, but false does not

Why does "true" output 1, but "false" output nothing? & Lt ;? Php $ atrue; echo & nbsp; output below & nbsp; true & nbsp; & lt; br & gt; echo & nbsp; $ a; echo & nbsp; & lt; br & gt; $ afalse; echo & nbsp; below output & nbsp; false & nb why true

First look at a special case: Var_dump (0 = = ' false '), returns BOOL (true), PHP determines 0 equals any string, Var_dump (0=== ' false '), returns BOOL (false), and the congruent contains type and value to be equal. Var_dump (0 = false),

Php does not need regular expressions to verify true and false ID cards. Let's look at the code directly. a simple PHP class copies the code as follows :? Php $ IDCardnewIDCard (); var_dump ($ IDCard: isCard ($ _ GET [card]); you can directly view