PHP中“=>

<"content-type:text/html;charset=utf-8"); 
$subject = array( "Maths" => 95, 
     "Physics" => 90, 
     "Chemistry" => 96, 
     "English" => 93, 
     "Computer" => 98 
   ); 
  
echo "学生成绩:<br><br>"; 
echo "数学:" . $subject["Maths"], "<br>"; 
echo "物理:" . $subject["Physics"], "<br>"; 
echo "化学:" . $subject["Chemistry"], "<br>"; 
echo "英语:" . $subject["English"], "<br>"; 
echo "计算机:" . $subject["Computer"], "<br>"; 
"//img.jbzj.com/file_images/article/201903/201903010841261.jpg" alt="" />

示例2：使用“=>”符号创建数字索引数组


<"0" => 7, 
    "1" => 10, 
    "2" => 8, 
    "3" => 5 
  ); 
foreach($arr as $key => $value) { 
 echo $key . " => " . $value . "<br>"; 
} 
"//img.jbzj.com/file_images/article/201903/201903010841262.jpg" alt="" />

示例3：用于在不使用“=>”符号的情况下分配数字索引


<"content-type:text/html;charset=utf-8"); 
$name = array("Zack", "Anthony", 
  "Ram", "Salim", "Raghav"); 
 
foreach($name as $key => $value) { 
 echo $key . " => " . $value . "<br>"; 
} 
"//img.jbzj.com/file_images/article/201903/201903010841263.jpg" alt="" />


                                
                                

                                    PHP,=> 
                                

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