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Extract namespace from a PHP file
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<?php | |
// Works in every situations | |
function by_token ($src) { | |
$tokens = token_get_all($src); | |
$count = count($tokens); | |
$i = 0; | |
$namespace = ''; | |
$namespace_ok = false; | |
while ($i < $count) { | |
$token = $tokens[$i]; | |
if (is_array($token) && $token[0] === T_NAMESPACE) { | |
// Found namespace declaration | |
while (++$i < $count) { | |
if ($tokens[$i] === ';') { | |
$namespace_ok = true; | |
$namespace = trim($namespace); | |
break; | |
} | |
$namespace .= is_array($tokens[$i]) ? $tokens[$i][1] : $tokens[$i]; | |
} | |
break; | |
} | |
$i++; | |
} | |
if (!$namespace_ok) { | |
return null; | |
} else { | |
return $namespace; | |
} | |
} | |
// Makes many assumptions on file format: | |
// namespace is declared on its own line, starting with "namespace" (no spaces). | |
function by_regexp($src) { | |
if (preg_match('#^namespace\s+(.+?);$#sm', $src, $m)) { | |
return $m[1]; | |
} | |
return null; | |
} | |
function bench($foo, $src) { | |
$start = microtime(true); | |
for ($i=0; $i<10000; $i++) { | |
$ns = $foo($src); | |
if ($ns !== 'Acme\\HelloBundle\\DependencyInjection') { | |
throw new Exception('Mother fucker ?'); | |
} | |
} | |
$end = microtime(true); | |
return $end - $start; | |
} | |
$src = file_get_contents("/path/to/file.php"); | |
var_dump(bench('by_token', $src), bench('by_regexp', $src)); | |
// Result on my machine for "Acme\HelloBundle\DependencyInjection": | |
// float(1.6613008975983) | |
// float(0.1151180267334) |
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