10个不太为人所知的，但实用的PHP函数

2

3

4

5

6

7

8

9

<?php

$error_message = "";

$filename = "./php_script.php";

if(!php_check_syntax($filename, &$error_message)) {

   echo "Errors were found in the file $filename: $error_message";

} else {

   echo "The file $filename contained no syntax errors";

}

?>

2

3

<?php

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

?>

2

3

<?php

show_source("php_script.php");

?>

2

3

<?php

echo php_strip_whitespace("php_script.php");

?>

2

3

4

5

6

7

<?php

$fp = fopen(__FILE__, ‘r‘);

fseek($fp, __COMPILER_HALT_OFFSET__);

var_dump(stream_get_contents($fp));

// the end of the script execution

__halt_compiler();

?>

2

3

<?php

highlight_file("php_script.php");

?>

2

3

<?php

ignore_user_abort();

?>

2

3

<?php

echo str_word_count("Hello How Are You!");

?>

2

3

<?php

print_r(get_defined_vars());

?>

2

3

4

5

<?php

echo $_SERVER[‘HTTP_USER_AGENT‘];

$browser = get_browser();

print_r($browser);

?>