php 1 true 0 false
The value false is not a constant for the number 0, it is a boolean value that indicates false. The value true is also not a constant for 1, it is a special boolean ... ,To specify a boolean literal, use the constants TRUE or FALSE . ..... been taught consider the value 1 as true and the value 0 as false a simple boolean value. ,0: false 42: true 0.0: false 4.2: true "": false "string": true "0": false "1": true [1, ... for a way to turn any value into a 0/1 that will fit into a MySQL boolean (tinyint) field: ,n"; echo 'stdClass: '.(boolval(new stdClass) ? 'true' : 'false')."-n"; ?> 以上例程会输出：. 0: false 42: true 0.0: false 4.2: true "": false "string": true "0": false "1": true [1,&,$x is undefined, NULL, TRUE, TRUE, FALSE, FALSE .... Any string (that does not start with a number), when casted to an integer, will be 0. ... 1 year ago. , A boolean TRUE value is converted to the string "1". Boolean FALSE is converted to "" (the empty string). This allows conversion back and forth ...,在其他程式語言裡, 有另外的值可用來判斷是/否, 如1 代表TRUE, 0 代表FALSE. ... 及字串"0"; 空陣列; 不含成員變數的物件(僅指PHP 4); NULL 值(包括未給值的變數) ...
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 php 1 true 0 false 相關參考資料
Booleanos - Manual - PHP
The value false is not a constant for the number 0, it is a boolean value that indicates false. The value true is also not a constant for 1, it is a special boolean ... https://www.php.net Booleans - Manual - PHP
To specify a boolean literal, use the constants TRUE or FALSE . ..... been taught consider the value 1 as true and the value 0 as false a simple boolean value. https://www.php.net boolval - Manual - PHP
0: false 42: true 0.0: false 4.2: true "": false "string": true "0": false "1": true [1, ... for a way to turn any value into a 0/1 that will fit into a MySQL b... https://www.php.net boolval - PHP
n"; echo 'stdClass: '.(boolval(new stdClass) ? 'true' : 'false')."-n"; ?> 以上例程会输出：. 0: false 42: true 0.0: false 4.2: true "": false "string&qu... https://www.php.net PHP 类型比较表- Manual - PHP
$x is undefined, NULL, TRUE, TRUE, FALSE, FALSE .... Any string (that does not start with a number), when casted to an integer, will be 0. ... 1 year ago. https://www.php.net Value 0 and 1 is equal to false and true in php - Stack Overflow
A boolean TRUE value is converted to the string "1". Boolean FALSE is converted to "" (the empty string). This allows conversion back and forth ... https://stackoverflow.com 【PHP】關於布林值TRUE FALSE - 老灰鴨的筆記本
在其他程式語言裡, 有另外的值可用來判斷是/否, 如1 代表TRUE, 0 代表FALSE. ... 及字串"0"; 空陣列; 不含成員變數的物件(僅指PHP 4); NULL 值(包括未給值的變數) ... http://oldgrayduck.blogspot.co |