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potrebuji radu s php na webu.

Mam skript ktery generuje nahodny retezec do obrazku. Rozchodil jsem si to u sebe na PC - to funguje, ale ne uz na serveru poskytovatele.

Skript vypada takto

$rand_str=random_string(5);
                                    
 //We memorize the md5 sum of the string into a session variable
$_SESSION['image_value'] = md5($rand_str);
                              
//Get each letter in one valiable, we will format all letters different
$letter1=substr($rand_str,0,1);
$letter2=substr($rand_str,1,1);
$letter3=substr($rand_str,2,1);
$letter4=substr($rand_str,3,1);
$letter5=substr($rand_str,4,1);
                                       
//Creates an image from a png file. If you want to use gif or jpg images, 
//just use the coresponding functions: imagecreatefromjpeg and imagecreatefromgif.
$image=imagecreatefrompng("images/noise2.png");
                                       
//Get a random angle for each letter to be rotated with.
$angle1 = rand(-20, 20);
$angle2 = rand(-20, 20);
$angle3 = rand(-20, 20);
$angle4 = rand(-20, 20);
$angle5 = rand(-20, 20);
                                 
//Get a random font. (In this examples, the fonts are located in "fonts" directory and named from 1.ttf to 10.ttf)
$font1 = rand(1, 8).".ttf";
$font2 = rand(1, 8).".ttf";
$font3 = rand(1, 8).".ttf";
$font4 = rand(1, 8).".ttf";
$font5 = rand(1, 8).".ttf";

//$font1 = "1.ttf";
//$font2 = "1.ttf";
//$font3 = "1.ttf";
//$font4 = "1.ttf";
//$font5 = "1.ttf";
                                       
//Define a table with colors (the values are the RGB components for each color).
//$colors[0]=array(122,229,112);
$colors[0]=array(43,217,25);
//$colors[1]=array(85,178,85);
$colors[1]=array(77,56,56);
$colors[2]=array(213,98,86);
//$colors[3]=array(141,214,210);
$colors[3]=array(68,229,220);
$colors[4]=array(214,141,205);
$colors[5]=array(43,118,241);
                                       
//Get a random color for each letter.
$color1=rand(0, 5);
$color2=rand(0, 5);
$color3=rand(0, 5);
$color4=rand(0, 5);
$color5=rand(0, 5);
                                       
//Allocate colors for letters.
$textColor1 = imagecolorallocate ($image, $colors[$color1][0],$colors[$color1][1], $colors[$color1][2]);
$textColor2 = imagecolorallocate ($image, $colors[$color2][0],$colors[$color2][1], $colors[$color2][2]);
$textColor3 = imagecolorallocate ($image, $colors[$color3][0],$colors[$color3][1], $colors[$color3][2]);
$textColor4 = imagecolorallocate ($image, $colors[$color4][0],$colors[$color4][1], $colors[$color4][2]);
$textColor5 = imagecolorallocate ($image, $colors[$color5][0],$colors[$color5][1], $colors[$color5][2]);

//Write text to the image using TrueType fonts.
$size = 22;
imagettftext($image, $size, $angle1, 10, $size+15, $textColor1, $font1, $letter1);
imagettftext($image, $size, $angle2, 35, $size+15, $textColor2, $font2, $letter2);
imagettftext($image, $size, $angle3, 60, $size+15, $textColor3, $font3, $letter3);
imagettftext($image, $size, $angle4, 85, $size+15, $textColor4, $font4, $letter4);
imagettftext($image, $size, $angle5, 110, $size+15, $textColor5, $font5, $letter5);
 
header('Content-type: image/png');
//Output image to browser
imagepng($image);
//Destroys the image
imagedestroy($image);

funkce random_string(5) generuje nahodny rotezec o 5ti znacich

Na vzdalenem serveru se to chova tak, ze se zobrazi pozadi s obrazkem images/noise2.png, ale jednotlive znaky v nem uz se nezobrazi.

Nevim, kde hledat problem

vypis phpinfo ze serveru pro gd:

GD Support enabled

GD Version 2.0 or higher

FreeType Support enabled

FreeType Linkage with freetype

JPG Support enabled

PNG Support enabled

WBMP Support enabled

Nevim jestli neni treba v opravnenich - pro adresar fonts (kde je 8 typu fontu ttf) je nastaveno opravneni cteni a zapis tedy rw-rw-rw-

Dekuji