How to change image upload size in php

How to modify the image upload size in php: 1. Find the php configuration file php.ini, and then modify "post_max_size =12M"; 2. Add "ini_set('file_uploads'" in front of the file or image upload code ,'ON');" and other codes.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

Specific implementation method of setting the image file upload size in PHP

1.(1). Find the php configuration file php.ini(win), Linux may be: php.conf

(2). Modify: post_max_size =12M (the default value is: post_max_size =2M)

2. Add the following configuration settings in front of the file or image upload code:

//HTTP上传文件的开关，默认为ON即是开 
 
ini_set('file_uploads','ON');
 
//通过POST、GET以及PUT方式接收数据时间进行限制为90秒 默认值：60 
 
ini_set('max_input_time','90');
 
//脚本执行时间就由默认的30秒变为180秒 
 
ini_set('max_execution_time', '180');
 
//Post变量由2M修改为8M，此值改为比upload_max_filesize要大 
 
ini_set('post_max_size', '12M');
 
//上传文件修改也为8M，和上面这个有点关系，大小不等的关系。
 
ini_set('upload_max_filesize','10M'); 
 
//正在运行的脚本大量使用系统可用内存,上传图片给多点，最好比post_max_size大1.5倍 
 
ini_set('memory_limit','20M');

Image upload case:

//上传图片
function uploadImg(){
    ini_set("memory_limit","100M");
    $base64Img = $GLOBALS['params']['base64Img'];
    $base64Img = str_replace(array("data:image/jpeg;base64,","data:image/png;base64,",'data:image/jpg;base64,',"'"), '', $base64Img);
    //ToolKit::_myLogln("data：",$base64Img, LOG_DIR.'base64_to_img_log');
    $output_file = $GLOBALS['file_dir'].DIRECTORY_SEPARATOR.'public'.DIRECTORY_SEPARATOR.'images'.DIRECTORY_SEPARATOR.'lixin'.DIRECTORY_SEPARATOR.'h5_upload_tmp'.DIRECTORY_SEPARATOR.uniqid().'.png';
    
    $url = base64_to_img($base64Img,$output_file);
    
    ToolKit::send(true, array('url'=>$url), '删除成功');
}
function base64_to_img( $base64_string, $output_file ) {
    
    
    $ifp = fopen( $output_file, "wb" );//以二进制写入方式打开
    fwrite( $ifp, base64_decode( $base64_string) );
    fclose( $ifp );
    return( $output_file );
}

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