<?php$array=['a'=>1,'b'=>2,'c'=>3];$lastKey=array_key_last($array);echo$lastKey;?> 执行以上代码,输出结果为: c 定义和用法 array_key_last() 函数获取一个数组的最后一个键值。 取得指定数组的 array 最后一个键值,不会影响到原数组的内部指针。
file_get_contents超时: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 <?php$timeout=array( ‘http’=>array( ‘timeout’=>5//设置一个超时时间,单位为秒 ) ); $ctx=stream_context_create($timeout); $text=file_get_contents(“https://example.com/”,0,$ctx); ?> fopen超时: 代码语言...
// get last item of array __last(['foo', 'bar', 'baz']) // 'baz' // get first item of array __first(['foo', 'bar', 'baz']) // 'foo' __first(['foo' => 'bar', 'bar' => 'baz']) // 'bar' // get first key of array __first_key...
>_init_Excel($reader,$filePath,$sheet); if($riqi){ //如果不需要日期,则忽略. $insertSql=$insertSql.'"'.$reader->getSheetTitle().'"'.",";//第一个字段固定是日期2012-1-9 } return array("EXCEL"=>$PHPExcel,"SQL"=>$insertSql); } //得到工作薄名称 function _get_sheetnames(...
getPagination($start, $last, $page, $total); return $result; } private function getPagination($start, $last, $page, $total) { if ($total <= WHISPER_PER_PAGE) { return ['hide' => true]; } $page = $page + 1; $next = 0; $prev = 0; if ($start == 0) { if ($last <...
a 函数说明 abs 绝对值 acos 反余弦 acosh 反双曲余弦 addcslashes 以 C 语言风格使用反斜线转义字符串中的字符 addslashes 使用反斜线引用字符串 apache_child_terminate 在本次请求结束后终止 apache 子进程 apache_geten
lastSave - Get the timestamp of the last disk save save - Synchronously save the dataset to disk (wait to complete) slaveOf - Make the server a slave of another instance, or promote it to master time - Return the current server time slowLog - Access the Redis slowLog entries acl Descri...
1$value = array_get($array, 'names.john', 'default');array_has()The array_has function checks that a given item or items exists in an array using "dot" notation:1$array = ['product' => ['name' => 'desk', 'price' => 100]]; 2 3$hasItem = array_has($array, 'product....
Thefirst,last, andwheremethods on theArrclass, in addition to their associated global helper functions, now pass the "value" as the first parameter to the given callback Closure. For example: 1Arr::first($array,function($value,$key){ ...
Another kind of array modification is sorting, which is discussed in Section 4.4. Last, Section 4.5 explores arrays that themselves contain other arrays. Chapter 6 shows you how to process form data, which the PHP interpreter automatically puts into an array for you. When you retrieve ...