What to do if the php image cannot be displayed due to errors

The PHP image cannot be displayed due to errors because there is a notice error. The solution is: 1. Turn off the notice error prompt of wamp; 2. Define [$file=";] in the previous step.

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php image cannot be displayed due to an error

(The picture above shows the Firefox browser, and the Google browser displays a cross)

<?php
header("Content-type:image/jpeg");
 
$resource = fopen(&#39;001.png&#39;,&#39;r&#39;);
while($ff = fread($resource, 1024)){
    $file .= $ff;
};
echo $file;

Cause analysis: Because there is a notice error.

$file .= $ff;

The prototype is:

$file = $file.$ff;

The $file in the middle is not defined, and an error will be reported

Solution:

Option 1: Turn off the notice error prompt of wamp.

error_reporting(E_ALL & ~E_NOTICE);

Option 2: In Define $file=";

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