Fix quotes = and ' in docstring

Author: zonuexe

lisp/php-mode.el

@@ -895,8 +895,8 @@ This is was done due to the problem reported here:
 (defun php-lineup-string-cont (langelem)
   "Line up string toward equal sign or dot.
 e.g.
-$str = 'some'
-     . 'string';
+$str \= \'some\'
+     . \'string\';
 this ^ lineup"
   (save-excursion
     (goto-char (cdr langelem))

lisp/php.el

@@ -243,12 +243,12 @@ an integer (the current comment nesting)."
     "Make a regular expression for methods with the given VISIBILITY.
 
 VISIBILITY must be a string that names the visibility for a PHP
-method, e.g. 'public'.  The parameter VISIBILITY can itself also
+method, e.g. \'public\'.  The parameter VISIBILITY can itself also
 be a regular expression.
 
 The regular expression this function returns will check for other
-keywords that can appear in method signatures, e.g. 'final' and
-'static'.  The regular expression will have one capture group
+keywords that can appear in method signatures, e.g. \'final\' and
+\'static\'.  The regular expression will have one capture group
 which will be the name of the method."
     (when (stringp visibility)
       (setq visibility (list visibility)))
@@ -275,8 +275,8 @@ which will be the name of the method."
                            '((* any) line-end))))))
 
   (defun php-create-regexp-for-classlike (type)
-    "Accepts a `TYPE' of a 'classlike' object as a string, such as
-'class' or 'interface', and returns a regexp as a string which
+    "Accepts a `TYPE' of a \'classlike\' object as a string, such as
+\'class\' or \'interface\', and returns a regexp as a string which
 can be used to match against definitions for that classlike."
     (concat
      ;; First see if 'abstract' or 'final' appear, although really these