PHP实用的功能函数

/**
 * 获取类/对象的方法列表
 *@param unknown $argument 类/对象
 *@param array|string $filter 过滤
 *@return array 类似:[]
 */

function class_get_methods($argument, $filter = null){

    $filters = 0;
    if(!empty($filter)){
        if(is_string($filter)) $filter = explode(',',  preg_replace('/s+/', '', $filter));
        $option = array(
                'static'=>ReflectionMethod::IS_STATIC,
                'public'=>ReflectionMethod::IS_PUBLIC,
                'protected'=>ReflectionMethod::IS_PROTECTED,
                'private'=>ReflectionMethod::IS_PRIVATE,
                'abstract'=>ReflectionMethod::IS_ABSTRACT,
                'final'=>ReflectionMethod::IS_FINAL,
        );

        foreach($filter as $value){
            $filters = $filters | $options[$value];
        }
    }

    $class = new ReflectionClass($argument);
    $ReflectionMethods = empty($filters)? $class->getMethods() : $class->getMethods($filters);
    $methods = [];
    foreach($ReflectionMethods as $ReflectionMethod){

        $function =  new ReflectionMethod($ReflectionMethod->class, $ReflectionMethod->name);
        //取得参数列表
        $parameters = $function->getParameters();
        foreach($parameters as $parameter){
            $aaa[$ReflectionMethod->name][] = '$'.$parameter->name;
        }
        if(isset($aaa[$ReflectionMethod->name]))
            $methods[] = $ReflectionMethod->name . '('. implode(', ', $aaa[$ReflectionMethod->name]) .' )';
            else
                $methods[] = $ReflectionMethod->name . '()';
    }
    return $methods;

}

来源:当初学phalcon框架时,没有php源码,不知道对象有哪些方法,及使用时传递什么参数.

示例:p(class_get_methods('Exception'));

/**
 * 计算薪资范围属于哪些区间
 *@param string $range 范围
 *@param array|string $intervals 区间
 *@return NULL|array 匹配的区间
 */
function interval($range, $intervals){
    
    if(is_string($intervals)) $intervals = [$intervals];

    $range = explode('-', $range);
    $result = null;
    foreach($intervals as $key => $value){
        
        $interval = explode('-', $value);
        if($interval[0] < $range[0] && $range[0] <= $interval[1]){
            $result[] = $value;
        }else if($range[0] < $interval[0] &&  $interval[0] < $range[1]){
            $result[] = $value;
        }
        
    }
    
    return $result;
    
}

来源:在招聘网站上通过薪资范围进行筛选时,发现并不准确,感觉这确实是个算法问题于是,自己实现了一下.

示例:

$range = '6-23';
$intervals = ['3-5', '5-10', '10-15', '15-20', '20-25', '25-30' ];
p('范围:' . $range, '区间:', $intervals, '结果:', interval($range, $intervals));

/**
 * 打印数据
 * $args 参数列表
 */
function p($args = ''){

    $args = func_get_args();
    $count = func_num_args();
    if($count == 0) $args = ['#----mark here----#'];
    
    if(in_array($args, ['@post',  '@get'])) {
        if($args == '@post') $args = $_POST;
        if($args == '@get') $args = $_GET;
    }
    
    $ajax = (isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') ? true : false;
    if(!$ajax) echo '<pre style="background:#efefef;padding:5px 0 0 5px;border: 1px solid #aaa;">';
    foreach($args as $key => $data){
        if (is_bool($data)) {
            $data = $data? '#true' : '#false';
        }elseif(empty($data)){
            if(is_null($data)) $data = '#null';
            if($data === '') $data = '#empty';
        }
        if($data instanceof Exception){
            $data = ['Class'=>get_class($data),  'Message' => $data->getMessage() . ' (' .$data->getCode() .')', 'File'=>$data->getFile() . ' (' .$data->getLine() .')'];
        }

        if($ajax){
            echo "
"; print_r($data); echo "
";
        }else{
            print_r($data);
            if($key != $count - 1) echo '<hr/>';
        }
    }
    if(!$ajax) echo '</pre><br/>';
}

来源:p函数是自己写的代替print_r的.

示例:上面也看到了它如此好用.

/**
 * 读取sql标准的文件
 *@param string $file 文件
 *@param boolean $toarray 是否返回数组
 *@return string|array
 */
function getSql($file, $toarray = false){

    $content = preg_replace(['/[
|
]+s?(((--s+|#).*)|/*(.|
)**/)/', '/[
|
]+/'], '', file_get_contents($file));
    if($toarray) $content = array_filter(explode(';', $content));
    return $content;
}

来源:项目开发时,会初始化一些表数据,每次都手动添加或修改,很麻烦.于是想到把处理好的表数据导出为sql文件,每次代码测试时,都把表数据初始化一遍.

/**
 * 发送HTTP请求方法
 * @param  string $url  请求URL
 * @param  array  $data 发送数据
 * @param  string $method 请求方法
 */
function curl($url, $data=[], $method='get', $options=[]){

    $options += array(CURLOPT_URL=>$url, CURLOPT_TIMEOUT=>30, CURLOPT_RETURNTRANSFER=>true, CURLOPT_SSL_VERIFYPEER=>false);
    if(!empty($data)) $options[CURLOPT_POSTFIELDS] = $data;
    $options[CURLOPT_CUSTOMREQUEST] = strtoupper($method);

    $ch = curl_init();
    curl_setopt_array($ch, $options);
    $data = curl_exec($ch);
    $error = curl_error($ch);
    curl_close($ch);
    return $error? false : $data;

}

/**
 * 文本文件转数组:
 * 文件内容:
 北京   111
 天津   222
 * @param unknown $content 文件路径或文本内容
 * @return multitype:
 */
function text2array($content){
    
    if(is_file($content)) $content = file_get_contents($content);
    $content = array_filter(explode("
", trim($content)));
    foreach($content as $value){
        $data[] = array_values(array_filter(explode(' ', $value)));
    }
    return $data;
}