自己写的一个图片加水印类,暂时只支持水印图片,水印文字的还没有完善 代码不是很完善,欢迎大家交流指正! 调用方式: 先包含类文件 然后实例化类: $img = new Images; 然后提供图片: $img-imgpath(原图片路径及名称,水印图片路径及名称); 之后开始加水
自己写的一个图片加水印类,暂时只支持水印图片,水印文字的还没有完善
代码不是很完善,欢迎大家交流指正!
调用方式:
先包含类文件
然后实例化类:
$img = new Images;
然后提供图片:
$img->imgpath(原图片路径及名称,水印图片路径及名称);
之后开始加水印:
$img->send();
说明:
send( strimg filename ) 这个方法有一个函数,可以省略,在省略的情况下,保存的图片路径和名称和原来的一样,如需保存成例外的图片,就在这里提供要保存的图片路径及名称
例外,还有一个方法,show(); 这个方法用于显示加好水印的图片
这个方法可以单独调用,但必须先调用 send()方法, 也可以连续调用: $img->send()->show(); PHPizabi PostgreSQL PHPWind BLOG phpBB
<?php class Images{ private $imgA = '', $imgB = ''; private $imgWA = 0, $imgWB = 0, $typea = 0; private $imgHA = 0, $imgHB = 0, $typeb = 0; private $objecta, $objectb; private $weizhi = 1; // 1坐上, 2中上, 3 右上, 4 中左, 5中部, 6 中右, 7, 下左, 8 下中, 9 下右 private $X = 0, $Y = 0; private $okfile = '1.jpg'; public function imgpath( $oldimg = '', $newing = '', $WeiZhi = 1 ) { //指定图片 $this->imgA = $oldimg; $this->imgB = $newing; $this->weizhi = $WeiZhi; return $this; } public function send( $Name = '' ){ !empty( $Name ) or $Name = $this->imgA; list($this->imgWA, $this->imgWB, $this->typea) = $this->imgread( $this->imgA ); list($this->imgHA, $this->imgHB, $this->typeb) = $this->imgread( $this->imgB ); $this->objecta = $this->openimg( $this->imgA, $this->typea ); $this->objectb = $this->openimg( $this->imgB, $this->typeb ); $this->WZ(); $this->start(); $this->over( $Name ); return $this; } private function WZ() { switch( $this->weizhi ) { case 2: $this->X = ( $this->imgWA - $this->imgHA ) / 2; break; case 3: $this->X = ( $this->imgWA - $this->imgHA ); break; case 4: $this->Y = ( $this->imgWB - $this->imgHB ) / 2 ; break; case 5: $this->X = ( $this->imgWA - $this->imgHA ) / 2; $this->Y = ( $this->imgWB - $this->imgHB ) / 2 ; break; case 6: $this->X = ( $this->imgWA - $this->imgHA ); $this->Y = ( $this->imgWB - $this->imgHB ) / 2 ; break; case 7: $this->Y = ( $this->imgWB - $this->imgHB ); break; case 8: $this->X = ( $this->imgWA - $this->imgHA ) / 2; $this->Y = ( $this->imgWB - $this->imgHB ); break; case 9: $this->X = ( $this->imgWA - $this->imgHA ); $this->Y = ( $this->imgWB - $this->imgHB ); break; default: $this->X = 0; $this->Y = 0; } } private function openimg( $FileName = '', $type = 0 ) { switch( $type ) { case 1: $obj = imagecreatefromgif( $FileName ); break; case 2: $obj = imagecreatefromjpeg( $FileName ); break; case 3: $obj = imagecreatefrompng( $FileName ); break; default: return false; } return $obj; } private function start(){ imagecopy( $this->objecta, $this->objectb, $this->X, $this->Y, 0, 0, $this->imgHA, $this->imgHB ); } private function over( $name = '1.jpg' ) { $this->okfile = $name; switch ( $this->typea ) { case 1: imagegif( $this->objecta, $name );break; case 2: imagejpeg( $this->objecta, $name );break; case 3: imagepng( $this->objecta, $name ); break; default: return false; } } private function imgread( $FilePath = '' ) { $Arr = getimagesize( $FilePath ); return array( $Arr[0], $Arr[1], $Arr[2] ); } public function show(){ @header('content-type:image/*'); echo @file_get_contents( $this->okfile ); } }

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。

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。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

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。


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