PHP ReflectionGenerator getExecutingLine()用法及代碼示例

ReflectionGenerator::getExecutingLine()函數是PHP中的一個內置函數，用於返回生成器中指定的當前正在執行的語句的行號。

用法:

int ReflectionGenerator::getExecutingLine( void )

參數：該函數不接受任何參數。

返回值：此函數返回生成器中指定的當前正在執行的語句的行號。

以下示例程序旨在說明PHP中的ReflectionGenerator::getExecutingLine()函數：

示例1:

<?php 
  
// Initializing a user-defined class Company 
class Company { 
    public function GFG() { 
        yield 0; 
    } 
} 
  
// Creating a generator 'A' on the above 
// class Company 
$A = (new Company)->GFG(); 
  
// Using ReflectionGenerator over the  
// above generator 'A' 
$B = new ReflectionGenerator($A); 
  
// Calling the getExecutingLine() function 
$C = $B->getExecutingLine(); 
  
// Getting the line number of the specified 
// currently executing statement in  
// the generator 'A' 
echo $C; 
?>

輸出：

示例2:

<?php 
  
// Initializing a user-defined class Departments 
class Departments { 
    public function Coding_Department() { 
        yield 0; 
    } 
    public function HR_Department() { 
        yield 1; 
    } 
    public function Marketing_Department() { 
        yield 2; 
    } 
} 
  
// Creating some generators on the above 
// class Departments 
$A = (new Departments)->Coding_Department(); 
$B = (new Departments)->HR_Department(); 
$C = (new Departments)->Marketing_Department(); 
  
// Using ReflectionGenerator over the  
// above generators 
$D = new ReflectionGenerator($A); 
$E = new ReflectionGenerator($B); 
$F = new ReflectionGenerator($C); 
  
// Calling the getExecutingLine() function 
// and getting the line number of the specified 
// currently executing statement in  
// the generators 
echo $D->getExecutingLine(); 
echo "\n"; 
echo $E->getExecutingLine(); 
echo "\n"; 
echo $F->getExecutingLine(); 
?>

輸出：

8
12
16

參考： https://www.php.net/manual/en/reflectiongenerator.getexecutingline.php

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注：本文由純淨天空篩選整理自Kanchan_Ray大神的英文原創作品 PHP | ReflectionGenerator getExecutingLine() Function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。