php基本函数汇总

2 [1003] => 2 [1008] => 1 [1001] => 1 [1000] => 1 [1004] => 1 [1012] => 1 [1009] => 1 [1111] => 1 )

isDir()) { if (! $file->isDot()) { cleanup_directory($file->getPathname()); } } else { unlink($file->getPathname()); } } rmdir($dir); }

$items = array(
1 => array('id' => 1,'pid' => 0,'name' => '安徽省'),2 => array('id' => 2,'name' => '浙江省'),3 => array('id' => 3,'pid' => 1,'name' => '合肥市'),4 => array('id' => 4,'pid' => 3,'name' => '长丰县'),5 => array('id' => 5,'name' => '安庆市'),);
print_r(generateTree($items));
/**

• 如何取数据格式化的树形数据
  */
  $tree = generateTree($items);
  function getTreeData($tree){
  foreach($tree as $t){
  echo $t['name'].'
  ';
  if(isset($t['son'])){
  getTreeData($t['son']);
  }
  }
  }

if(a > b) {
return 1;
}

return 0;
});

return $result;
},[]);
// [1 => 1,2 => 2,... 5 => 5]

'value']; array_map(function($key,$value) {

echo $key . $value;
},array_keys($input),$input)
// 'keyvalue'
$double = function($item) {
return 2 * $item;
}

$result = array_map($double,[1,3]);

// 2 4 6

$fab[0] = 1;
$fab[1] = 1;

for ($i = 2; $i < $month; $i++)
{
$fab[$i] = $fab[$i - 1] + $fab[$i - 2];
}

for ($i = 0; $i < $month; $i++)
{
echo sprintf("第{%d}个月兔子为：{%d}",$i,$fab[$i])."
";
}

function decrypt($data,$key)
{
$key = md5($key);
$x = 0;
$data = base64_decode($data);
$len = strlen($data);
$l = strlen($key);
$char = '';
for ($i = 0; $i < $len; $i++)
{
if ($x == $l)
{
$x = 0;
}
$char .= substr($key,$x,1);
$x++;
}
$str = '';
for ($i = 0; $i < $len; $i++)
{
if (ord(substr($data,1)) < ord(substr($char,1)))
{
$str .= chr((ord(substr($data,1)) + 256) - ord(substr($char,1)));
}
else
{
$str .= chr(ord(substr($data,1)) - ord(substr($char,1)));
}
}
return $str;
}

array_walk_recursive($arr,function($value) use (&$result) {
$result[] = $value;
});

return $result;
}
print_r(array_flatten([1,[2,3],[4,5]]));// [1,5]] => [1,5]
// var new_array = old_array.concat(value1[,value2[,...[,valueN]]])
var test = [1,6],[7,8]];
[].concat.apply([],test); // [1,6,7,8] 对于 test 数组中的每一个 value， 将它 concat 到空数组 [] 中去，而因为 concat 是 Array 的 prototype，所以我们用一个空 array 作载体
var test1 = [1,[3,[5]]]];

function flatten(arr) {
return arr.reduce(function(pre,cur) {
if(Array.isArray(cur)) {
return flatten(pre.concat(cur));
}

return pre.concat(cur);

},[]);
}

// [1,5]
json_encode中文
function json_encode_wrapper ($result)
{
if(defined('JSON_UNESCAPED_UNICODE')){
return json_encode($result,JSON_UNESCAPED_UNICODE|JSON_NUMERIC_CHECK);
}else {
return preg_replace(
array("#u([0-9a-f][0-9a-f][0-9a-f][0-9a-f])#ie","/"(d+)"/",),array("iconv('UCS-2','UTF-8',pack('H4','1'))","1"),json_encode($result)
);
}
}

array('id'=>'2','title'=>'...','ding'=>'1','jing'=>'1','time'=>'...','url'=>'...','dj'=>'...'),array('id'=>'2','dj'=>'...')

);
function about_unique($arr=array()){
/将该种二维数组看成一维数组，则 该一维数组的value值有相同的则干掉只留一个，并将该一维 数组用重排后的索引数组返回，而返回的一维数组中的每个元素都是 原始key值形成的关联数组 /
$keys =array();
$temp = array();
foreach($arr[0] as $k=>$arrays) {
/数组记录下关联数组的key值/
$keys[] = $k;
}
//return $keys; /降维/
foreach($arr as $k=>$v) {
$v = join(",",$v); //降维
$temp[] = $v;
}
$temp = array_unique($temp); //去掉重复的内容
foreach ($temp as $k => $v){
/再将拆开的数组按索引数组重新组装/
$temp[$k] = explode(",$v);
}
//return $temp; /再将拆开的数组按关联数组key值重新组装/
foreach($temp as $k=>$v) {
foreach($v as $kkk=>$ck) {
$data[$k][$keys[$kkk]] = $temp[$k][$kkk];
}
}
return $data;
}

= 1024 && $i < 6; $i++) $size /= 1024; return round($size,2) . $delimiter . $units[$i]; }

'年前 ('.date('Y-m-d',$timestamp).')',30 * 24 * 60 * 60 => '个月前 ('.date('m-d',7 * 24 * 60 * 60 => '周前 ('.date('m-d',24 * 60 * 60 => '天前',60 * 60 => '小时前',60 => '分钟前',1 => '秒前' ); foreach ($interval as $secs => $str) { $d = $etime / $secs; if ($d >= 1) { $r = round($d); return $r . $str; } }; }

"北京",12=>"天津",13=>"河北",14=>"山西",15=>"内蒙古",21=>"辽宁",22=>"吉林",23=>"黑龙江",31=>"上海",32=>"江苏",33=>"浙江",34=>"安徽",35=>"福建",36=>"江西",37=>"山东",41=>"河南",42=>"湖北",43=>"湖南",44=>"广东",45=>"广西",46=>"海南",50=>"重庆",51=>"四川",52=>"贵州",53=>"云南",54=>"西藏",61=>"陕西",62=>"甘肃",63=>"青海",64=>"宁夏",65=>"新疆",71=>"台湾",81=>"香港",82=>"澳门",91=>"国外"); $City = substr($id,2); $BirthYear = substr($id,4); $BirthMonth = substr($id,2); $BirthDay = substr($id,12,2); $Sex = substr($id,16,1) % 2 ;//男1 女0 //$Sexcn = $Sex?'男':'女'; //地域验证 if(is_null($oCity[$City])) {return false;} //出生日期效验 if($BirthYear>2078 || $BirthYear<1900) {return false;} $RealDate = strtotime($BirthYear.'-'.$BirthMonth.'-'.$BirthDay); if(date('Y',$RealDate)!=$BirthYear || date('m',$RealDate)!=$BirthMonth || date('d',$RealDate)!=$BirthDay) { return false; } return array('id'=>$id,'location'=>$oCity[$City],'Y'=>$BirthYear,'m'=>$BirthMonth,'d'=>$BirthDay,'sex'=>$Sex); }

array( 'id' => 1,'name' => '张三','email' => 'zhangsan@sina.com',1 => array( 'id' => 2,'name' => '李四','email' => 'lisi@163.com',2 => array( 'id' => 5,'name' => '王五','email' => '10000@qq.com',...... ); $ids = array(); $ids = array_map('array_shift',$user); $ids = array_column($user,'id');//php5.5 $names = array(); $names = array_reduce($user,create_function('$v,$w','$v[$w["id"]]=$w["name"];return $v;'));