<?php // $name='lisi'; // $age =18; //$bol =true; //$bol =false; // echo ($bol); //echo ('name is'.$name.'<br/>age is'.$age) //if($age>=18) //{ // echo ('ok'); //} //else{ // echo ('no'); //} //for($i=0;$i<10;$i++ ) { // echo($i . ' '); //} //$x=5; //$y=6; //$z=$x+$y; //echo ($z.''); //$x=8; // // //function myTest(){ // $y=7; // echo ($y.''.'<br/>'); // //} //myTest(); //echo "x=$x"; //$x=5; //$y=8; //function myTest(){ // global $x,$y;//global 全局变量 ocal局部变量 static静态变量 // $y=$x+$y; // //} // //myTest(); //echo "$y"; //$x=6; //$y=7; //function myTest(){ // $GLOBALS['y']=$GLOBALS['y']+$GLOBALS['x']; // //} //myTest(); //echo "$y"; //function myTest(){ // static $x=0; // echo "$x<br/>"; // $x++; //} //myTest(); //myTest(); //myTest(); //myTest(); //myTest(); //myTest(); //myTest(); //myTest(); //myTest(); //myTest(); //myTest(); //myTest(); //for($i=0;$i<6;$i++){ // for($j=6;$j>$i;$j--){ //直角三角形 // echo " "; // } // for($k=0;$k<$i;$k++){ // echo "*"; // } // echo "<br/>"; //} //echo "PHP 很有趣<br>"; //echo "HEllo world<br>"; //echo "我觉得学习PHP<br>"; //$tex1="learn PHP"; //$tex2="baidu.com"; //$cars=array("Vovol","COcol","BObol"); //echo "$tex1<br>"; //echo "$tex2<br>"; //for($i=0;$i<3;$i++){//输出整个集合 // echo "$cars[$i]<br>"; //} //$x=5950.553; //var_dump($x);//输出int类型或则float类型 //echo "<br>"; //$x = -345; // 负数 //var_dump($x); //echo "<br>"; //$x = 0x8C; // 十六进制数 //var_dump($x); //echo "<br>"; //$x = 047; // 八进制数 //var_dump($x); //$x=2.4e3; //echo "<br>"; //var_dump($x); //$cars=array("Volvo","BMW","SAAB"); //var_dump($cars);//集合全部输出 class Car { var $color; function Car($color="green") { $this->color = $color; } function what_color() { return $this->color; } } function print_vars($obj) { foreach (get_object_vars($obj) as $prop => $val) {//不懂,明天请教 echo " $prop = $val "; } } // instantiate one object $herbie = new Car("white"); // show herbie properties echo "herbie: Properties "; print_vars($herbie); //$x="Hello world!"; //$x=null; //输出NULL //var_dump($x); //echo strlen("qianlilin nihao!");//计算字符串的长度(包括空格,符号) //echo strpos("qianlilin nihao!","nihao");//返回首个匹配字符串的位置 //define("GREETING","welcome qianlilin");//类似于关键字输出 //echo GREETING ; //echo "<br/>"; //$x=10; //$y=6; //echo ($x + $y); // 输出 16 //echo "<br/>"; //echo ($x - $y); // 输出 4 元素符 //echo "<br/>"; //echo ($x * $y); // 输出 60 //echo "<br/>"; //echo ($x / $y); // 输出 1.6666666666667 //echo "<br/>"; //echo ($x % $y); // 输出