Fixes #4526: fixed error caused by substr_compare length parameter doesn't accept null in PHP 5.4

extensions/gii/generators/crud/Generator.php

@@ -374,7 +374,7 @@ class Generator extends \yii\gii\Generator
                     $labels[$name] = 'ID';
                 } else {
                     $label = Inflector::camel2words($name);
-                    if (!empty($label) && substr_compare($label, ' id', -3, null, true) === 0) {
+                    if (!empty($label) && substr_compare($label, ' id', -3, 3, true) === 0) {
                         $label = substr($label, 0, -3) . ' ID';
                     }
                     $labels[$name] = $label;

extensions/gii/generators/model/Generator.php

@@ -197,7 +197,7 @@ class Generator extends \yii\gii\Generator
                 $labels[$column->name] = 'ID';
             } else {
                 $label = Inflector::camel2words($column->name);
-                if (!empty($label) && substr_compare($label, ' id', -3, null, true)) {
+                if (!empty($label) && substr_compare($label, ' id', -3, 3, true)) {
                     $label = substr($label, 0, -3) . ' ID';
                 }
                 $labels[$column->name] = $label;
@@ -429,7 +429,7 @@ class Generator extends \yii\gii\Generator
      */
     protected function generateRelationName($relations, $className, $table, $key, $multiple)
     {
-        if (!empty($key) && substr_compare($key, 'id', -2, null, true) === 0 && strcasecmp($key, 'id')) {
+        if (!empty($key) && substr_compare($key, 'id', -2, 2, true) === 0 && strcasecmp($key, 'id')) {
             $key = rtrim(substr($key, 0, -2), '_');
         }
         if ($multiple) {

extensions/mongodb/gii/model/Generator.php

@@ -183,7 +183,7 @@ class Generator extends \yii\gii\Generator
                 $label = 'ID';
             } else {
                 $label = Inflector::camel2words($attribute);
-                if (substr_compare($label, ' id', -3, null, true) === 0) {
+                if (substr_compare($label, ' id', -3, 3, true) === 0) {
                     $label = substr($label, 0, -3) . ' ID';
                 }
             }

extensions/sphinx/gii/model/Generator.php

@@ -181,7 +181,7 @@ class Generator extends \yii\gii\Generator
                 $labels[$column->name] = 'ID';
             } else {
                 $label = Inflector::camel2words($column->name);
-                if (substr_compare($label, ' id', -3, null, true) === 0) {
+                if (substr_compare($label, ' id', -3, 3, true) === 0) {
                     $label = substr($label, 0, -3) . ' ID';
                 }
                 $labels[$column->name] = $label;