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php-spider

Posted by 夏泽民 Sep 12, 2017

$composer install

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php怎么判断函数，类，类方法是不是存在

Posted by 夏泽民 Sep 12, 2017 
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（1）php判断系统函数或自己写的函数是否存在
bool function_exists ( string $function_name ) 判断函数是否已经定义，例如：
if(function_exists('curl_init')){
    curl_init();
}else{
    echo 'not function curl_init';
}
（2）php判断类是否存在
bool class_exists ( string $class_name [, bool $autoload = true ] ) 检查一个类是否已经定义，一定以返回true，否则返回false，例如：
if(class_exists('MySQL')){
    $myclass=new MySQL();
}
（3）php判断类里面的某个方法是否已经定义
bool method_exists ( mixed $object , string $method_name ) 检查类的方法是否存在，例如：
$directory=new Directory;
if(!method_exists($directory,'read')){
    echo '未定义read方法！';
}
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composer-source

Posted by 夏泽民 Sep 12, 2017

1、安装 curl -sS https://getcomposer.org/installer | php mv composer.phar /usr/local/bin/composer 如果上面出现问题 可以这样 curl -sS https://getcomposer.org/installer | php mv composer.phar /usr/local/bin/composer 如果curl下载较慢,一直卡在downloading 可以这样 wget https://getcomposer.org/installer php installer mv composer.phar /usr/local/bin/composer 2、配置国内源

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php-doc

Posted by 夏泽民 Sep 11, 2017

老的版本是phpdoc，从1.3.0开始，更名为phpDocumentor

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oauth-github-api

Posted by 夏泽民 Sep 10, 2017
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