PHP使用函数用法详解

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<?php
$error_message = "";
$filename = "./php_script.php";
if(!php_check_syntax($filename, &$error_message)) {
  echo "Errors were found in the file $filename: $error_
} else {
  echo "The file $filename contained no syntax errors";
}
?>

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<?php
highlight_string(' <?php phpinfo(); ?>');
?>

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<?php
show_source("php_script.php");
?>

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<?php
echo php_strip_whitespace("php_script.php");
?>

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<?php
$fp = fopen(__FILE__, 'r');
fseek($fp, __COMPILER_HALT_OFFSET__);
var_dump(stream_get_contents($fp));
// the end of the script execution
__halt_compiler(); 
?>

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<?php
highlight_file("php_script.php");
?>

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<?php
ignore_user_abort();
?>

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<?php
echo str_word_count("Hello How Are You!");
?>

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<?php
print_r(get_defined_vars());
?>

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<?php
echo $_SERVER['HTTP_USER_AGENT'];
$browser = get_browser();
print_r($browser);
?>