1--TEST-- 2preg_replace() 3--SKIPIF-- 4<?php 5if (@preg_match('/./u', '') === false) { 6 die('skip no utf8 support in PCRE library'); 7} 8?> 9--FILE-- 10<?php 11 12var_dump(preg_replace('', array(), '')); 13 14var_dump(preg_replace(array('/\da(.)/ui', '@..@'), '$1', '12Abc')); 15var_dump(preg_replace(array('/\da(.)/ui', '@(.)@'), '$1', array('x','a2aA', '1av2Ab'))); 16 17 18var_dump(preg_replace(array('/[\w]+/'), array('$'), array('xyz', 'bdbd'))); 19var_dump(preg_replace(array('/\s+/', '~[b-d]~'), array('$'), array('x y', 'bd bc'))); 20 21echo "==done==\n"; 22 23?> 24--EXPECTF-- 25Warning: preg_replace(): Parameter mismatch, pattern is a string while replacement is an array in %spreg_replace2.php on line 3 26bool(false) 27string(1) "c" 28array(3) { 29 [0]=> 30 string(1) "x" 31 [1]=> 32 string(2) "aA" 33 [2]=> 34 string(2) "vb" 35} 36array(2) { 37 [0]=> 38 string(1) "$" 39 [1]=> 40 string(1) "$" 41} 42array(2) { 43 [0]=> 44 string(3) "x$y" 45 [1]=> 46 string(1) "$" 47} 48==done== 49