当echo一个对象的时候，会报错误
Object of class Person could not be converted to string
我们可以通过魔术方法__tostring() 把对象转成字符串
#!/usr/bin/php<?php ???????class Person{ ???????????public $name = ‘ghostwu‘; ???????????public $age = 20; ???????????function __toString(){ ???????????????????return json_encode( $this ); ???????????} ???} ???????echo new Person();?>继续改造php静态变量与方法与phar的使用
ghostconfig.php
<?php ???class ghostconfig{ ???????????public $projName = ‘‘; ???????????public $author = ‘‘; ???????????function __tostring(){ ???????????????????return json_encode( $this ); ???????????} ???}?>ghostinit.php
require( "ghostconfig.php" ); ???class ghostinit{ ???????static $v = ‘ghost version is 1.1‘; ???????static function init(){ ???????????$config = new ghostconfig(); ???????????echo "pls input project name?" . PHP_EOL; ???????????$config->projName = fgets( STDIN ); ???????????echo "pls input author?" . PHP_EOL; ???????????$config->author = fgets( STDIN ); ???????????????????????echo "您输入的项目信息如下:" . PHP_EOL; ???????????echo $config; ???????} ???????static function getConfig( $conf ){ ???????????$std = new stdClass(); ???????????foreach( $conf as $k => $v ){ ???????????????$std->$k = $v; ???????????} ???????????return $std; ???????} ???????function __tostring(){ ???????????return json_encode( $this ); ???????} ???????static function make(){ ???????????$pchar=new Phar("ghost.phar"); ???????????$pchar->buildFromDirectory(dirname(__FILE__)); ???????????$pchar->setStub($pchar->createDefaultStub(‘ghost‘)); ???????????$pchar->compressFiles(Phar::GZ); ???????????????} ???????static function __callstatic( $m, $args ){ ???????????echo ‘error function‘; ???????} ???}php7可以使用匿名类简化
php魔术方法__tostring的应用
原文地址：https://www.cnblogs.com/ghostwu/p/8964682.html