Fix bug #65106: PHP fails to compile ext/fileinfo on memory-limited machines

Use a list of longs instead of a list of chars: this uses less resources (CPU and RAM) with some compilers (notably GCC and Clang).

Author: outtersg

ext/fileinfo/create_data_file.php

@@ -4,15 +4,14 @@
 <?php
     $dta = file_get_contents( $argv[1] );
     $dta_l = strlen($dta);
-    $j = 0;
 
-    echo "const unsigned char php_magic_database[$dta_l] = {\n";
-    for ($i = 0; $i < $dta_l; $i++) {
-        printf("0x%02X, ", ord($dta[$i]));
-        if ($j % 16 == 15) {
+    echo "const uint32_t php_magic_database[" . ($dta_l / 4) . "] = {\n";
+    for ($i = 0; $i < $dta_l; $i += 4) {
+        // We are byte-by-byte reading a file of uint32_t stored as little endian (if run on Intel), so swap bytes.
+        printf("0x%02X%02X%02X%02X, ", ord($dta[$i + 3]), ord($dta[$i + 2]), ord($dta[$i + 1]), ord($dta[$i]));
+        if ($i % 16 == 12) {
             echo "\n";
         }
-        $j++;
     }
     echo "};\n";
 ?>