print_r()会舍弃掉小数位末尾的 “0”;布尔值 true 输出 1,false 不输出;空字符串 和 null 不输出。如果给出的是 array,将会按照一定格式显示键和元素。object 与数组类似。 var_dump()方法是判断一个变量的类型与长度,并输出变量的值和数据类型。var_dump()输出比print_r()更详细,一般调试时用得多。两...
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The main difference between the PHP echo() and print() are, Return value: PHP print() returns 1 always. Parameters: PHP print() receives single parameter unlike echo(). echo() is slightly faster than print()when using more strings in a single statement. ...
此时 print_r() 将不打印结果,而是返回其输出。 $str = "hello";$result = print_r($str, true);echo $result;输出:hello 参考 php.net: print_r stackoverflow: What's the difference between echo, print, and print_r in PHP? 关键字:php版权声明本文来自互联网用户投稿,文章观点仅代表作者本人,不...
In most cases, use "echo" over "print" in PHP as it is considered to be faster, can output multiple strings at once separated by commas and does not return a value, making it more efficient for simple text display; whereas "print" is better suited for situations where a return value ...
In this tutorial you will understand the basic difference between PHP echo and print statements as well as how to use them to display output in the browser.
PHP - Break Statement PHP - Continue Statement C.Echo is faster than print D.There is no difference 5. What will the following code output? echo 'Hello', ' World!'; A.Hello World! B.Hello, World! C.Error D.Hello World! Show Answer ...
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php// taking two variables and assigning// boolean values$check1=true;$check2=true;// echo if either condition is trueif($check1||$check2) {echo"One or both conditions is/are true.\n"; }$check1=false;$check2=false;// echo if either condition is trueif($check1||$check2) {echo...
php// taking two variables and assigning// boolean values$check1=true;$check2=true;// echo if two conditions are trueif($check1&&$check2) {echo"Both of the given conditions are true.\n"; }$check1=false;$check2=true;// echo if two conditions are true or falseif($check1&&$check2...