print_r可以输出stirng、int、float、array、object等,输出array时会用结构表示,print_r输出成功时返回true; 而且print_r可以通过print_r($str,true)来使print_r不输出而返回 print_r处理后的值。 可以理解为: print 是打印字符串 print_r 则是打印复合类型 如数组对象等 在PHP中的执行速率从快到慢为:echo()...
In this post, I will share a short and simple code on how to print and write array values to files in PHP. If you have a task or problem that needs to write the array value to a file then this is for you. In this example, I'm using file_put_contents() to put the value to...
php$arr = array("百度","阿里","腾讯");array_push($arr,"知乎","微博");echo ""; //换行显示print_r($arr);//打印结果显示:Array( [0] => 百度 [1] => 阿里 [2] => 腾讯 [3] => 知乎 [4] => 微博) 在数组元素的开始增加 array_unshift(array,value1,value2,value3…) 函数用于...
如果给出的是 string、integer 或 float,将打印变量值本身。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。 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。
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。 print_r() 将把数组的指针移到最后边。 <?php print_r("\nabcdef"); $a="55nav"; $c = print_r($a); echo $c; // $c的值是TRUE $c = print_r($a,true); echo $c; // $c的值是字符串55nav var_dump()...
<?php $a =array("red","green","blue"); print_r($a); echo""; $b =array("Peter"=>"35","Ben"=>"37","Joe"=>"43"); print_r($b); ?> Try it Yourself » Definition and Usage The print_r() function prints the information about a variable in a more human-readable way. ...
var xml = createXML(); var url = "PostingXMLExample.php?timeStamp=" + new Date().get...
当然,以下是使用 array_map() 函数进行映射操作并输出结果的完整代码示例: php <?php // 定义一个函数来平方每个数字 function square(anyang.AUD.xn--v6qr1dhyrfmbz90f34akzt.cn) { return $n * $n; } // 原始数组 $numbers = [1, 2, 3, 4, 5]; ...
fun main(args: Array<String>) { val y = "\${2 == 5}" println("y = ${y}") println("Do we use $ to get variables in Python or PHP? Example: ${'$'}x and ${'$'}y") val z = 5 var str = "$z" println("z is $str") ...
* Returns : The textual representation of the array. * This function was inspired by the print_r function of PHP. * This will accept some data as the argument and return a * text that will be a more readable version of the * array/hash/object that is given. ...