


1. If you want to upload multiple images using AFN, use the following method
The callback was triggered successfully, but the PHP background said that the image could not be received. I'm not sure whether my approach is wrong or whether there is extra processing required in the background. How do you deal with this problem when you encounter it? Share ideas.
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1. If you want to upload multiple images using AFN, use the following method
The callback was triggered successfully, but the PHP background said that the image could not be received. I'm not sure whether my approach is wrong or whether there is extra processing required in the background. How do you deal with this problem when you encounter it? Share ideas.

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

Vue.js与Objective-C语言的集成,开发可靠的Mac应用的技巧和建议近年来,随着Vue.js在前端开发中的普及和Objective-C在Mac应用开发中的稳定性,开发者们开始尝试将这两者结合起来,以开发出更加可靠和高效的Mac应用程序。本文将介绍一些技巧和建议,帮助开发者正确集成Vue.js和Objective-C,并开发出高质量的Mac应用。一

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。


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