php图片写入带问号_PHP实现文字写入图片功能

/**

* PHP实现文字写入图片

*/

class wordsOnImg {

public $config &＃61; null;

/**

* &＃64;param $config 传入参数

* &＃64;param $config[&＃39;file&＃39;] 图片文件

* &＃64;param $config[&＃39;size&＃39;] 文字大小

* &＃64;param $config[&＃39;angle&＃39;] 文字的水平角度

* &＃64;param $config[&＃39;fontfile&＃39;] 字体文件路径

* &＃64;param $config[&＃39;width&＃39;] 预先设置的宽度

* &＃64;param $config[&＃39;x&＃39;] 开始写入时的横坐标

* &＃64;param $config[&＃39;y&＃39;] 开始写入时的纵坐标

*/

public function __construct($config&＃61;null){

if(empty($config)){

return &＃39;must be config&＃39;;

}

$fileArr &＃61; explode(".",$config[&＃39;file&＃39;]);

$config[&＃39;file_name&＃39;] &＃61; $fileArr[0];

$config[&＃39;file_ext&＃39;] &＃61; $fileArr[1];

$this->config &＃61; $config;

}

/**

* PHP实现图片上写入实现文字自动换行

* &＃64;param $fontsize 字体大小

* &＃64;param $angle 角度

* &＃64;param $font 字体路径

* &＃64;param $string 要写在图片上的文字

* &＃64;param $width 预先设置图片上文字的宽度

* &＃64;param $flag 换行时单词不折行

*/

public function wordWrap($fontsize,$angle,$font,$string,$width,$flag&＃61;true) {

$content &＃61; "";

if($flag){

$words &＃61; explode(" ",$string);

foreach ($words as $key&＃61;>$value) {

$teststr &＃61; $content." ".$value;

$testbox &＃61; imagettfbbox($fontsize, $angle, $font, $teststr);

//判断拼接后的字符串是否超过预设的宽度

if(($testbox[2] > $width)) {

$content .&＃61; "\n";

}

$content .&＃61; $value." ";

}

}else{

//将字符串拆分成一个个单字 保存到数组 letter 中

for ($i&＃61;0;$i

$letter[] &＃61; mb_substr($string, $i, 1);

}

foreach ($letter as $l) {

$teststr &＃61; $content." ".$l;

$testbox &＃61; imagettfbbox($fontsize, $angle, $font, $teststr);

// 判断拼接后的字符串是否超过预设的宽度

if (($testbox[2] > $width) && ($content !&＃61;&＃61; "")) {

$content .&＃61; "\n";

}

$content .&＃61; $l;

}

}

return $content;

}

/**

* 实现写入图片

* &＃64;param $text 要写入的文字

* &＃64;param $flag 是否直接输出到浏览器&＃xff0c;默认是

*/

public function writeWordsToImg($text,$flag&＃61;true){

if(empty($this->config)){

return &＃39;must be config&＃39;;

}

//获取图片大小

$img_pathWH &＃61; getimagesize($this->config[&＃39;file&＃39;]);

//打开指定的图片文件

$im &＃61; imagecreatefrompng($this->config[&＃39;file&＃39;]);

#设置水印字体颜色

$color &＃61; imagecolorallocatealpha($im,0, 0, 255, 75);//蓝色

$have &＃61; false;

if(stripos($text,"
")!&＃61;&＃61; false){

$have &＃61; true;

}

if($have){

$words_text &＃61; explode("
",$text);

$words_text[0] &＃61; $this->wordWrap($this->config[&＃39;size&＃39;], $this->config[&＃39;angle&＃39;], $this->config[&＃39;fontfile&＃39;], $words_text[0], $this->config[&＃39;width&＃39;]); //自动换行处理

$words_text[1] &＃61; $this->wordWrap($this->config[&＃39;size&＃39;], $this->config[&＃39;angle&＃39;], $this->config[&＃39;fontfile&＃39;], $words_text[1], $this->config[&＃39;width&＃39;]); //自动换行处理

$words_text[2] &＃61; $this->wordWrap($this->config[&＃39;size&＃39;], $this->config[&＃39;angle&＃39;], $this->config[&＃39;fontfile&＃39;], $words_text[2], $this->config[&＃39;width&＃39;]); //自动换行处理

imagettftext($im, $this->config[&＃39;size&＃39;], $this->config[&＃39;angle&＃39;], $this->config[&＃39;x&＃39;], $this->config[&＃39;y&＃39;], $color, $this->config[&＃39;fontfile&＃39;], $words_text[0]);

imagettftext($im, $this->config[&＃39;size&＃39;], $this->config[&＃39;angle&＃39;], $this->config[&＃39;x&＃39;], $this->config[&＃39;y&＃39;]&＃43;30, $color, $this->config[&＃39;fontfile&＃39;], " ".$words_text[1]);

imagettftext($im, $this->config[&＃39;size&＃39;], $this->config[&＃39;angle&＃39;], $img_pathWH[0]/2&＃43;70, $img_pathWH[1]-80, $color, $this->config[&＃39;fontfile&＃39;], $words_text[2]);

if($flag){

header("content-type:image/png");

imagepng($im);

imagedestroy($im);

}

imagepng($im,$this->config[&＃39;file_name&＃39;].&＃39;_1.&＃39;.$this->config[&＃39;file_ext&＃39;]);

imagedestroy($im);

}

$words_text &＃61; $this->wordWrap($this->config[&＃39;size&＃39;], $this->config[&＃39;angle&＃39;], $this->config[&＃39;fontfile&＃39;], $text, $this->config[&＃39;width&＃39;]); //自动换行处理

imagettftext($im, $this->config[&＃39;size&＃39;], $this->config[&＃39;angle&＃39;], $this->config[&＃39;x&＃39;], $this->config[&＃39;y&＃39;], $color, $this->config[&＃39;fontfile&＃39;], $words_text);

if($flag){

header("content-type:image/png");

imagepng($im);

imagedestroy($im);

}

imagepng($im,$this->config[&＃39;file_name&＃39;].&＃39;_1.&＃39;.$this->config[&＃39;file_ext&＃39;]);

imagedestroy($im);

}

}

$text &＃61; "Dear Kang
If you can hold something up and put it down, it is called weight lifting;if you can hold something up but can never put it down, it&＃39;s called bueden bearing. Pitifully, most of people are bearing heavy burdens when they are in love.\n\nBeing nice to someone you dislike doesn&＃39;t mean you&＃39;re a hypocritical people. It means you&＃39;re mature enough to tolerate your dislike towards them.
Mr. Kang";

$data &＃61; array(

&＃39;file&＃39;&＃61;>&＃39;20171226152410.png&＃39;,

&＃39;size&＃39;&＃61;>12,

&＃39;angle&＃39;&＃61;>0,

&＃39;fontfile&＃39;&＃61;>&＃39;./Font/ChalkboardSE.ttc&＃39;,

&＃39;width&＃39;&＃61;>270,

&＃39;x&＃39;&＃61;>20,

&＃39;y&＃39;&＃61;>70

);

//使用

$wordsOnImgObj &＃61; new wordsOnImg($data);

$wordsOnImgObj->writeWordsToImg($text);